2024-03-29T06:42:50Z
http://radap.kpi.ua/radiotechnique/oai
oai:ojs.radap.kpi.ua:article/1
2024-03-29T06:42:48Z
radiotechnique:radio-navigation
v2
http://radap.kpi.ua/radiotechnique/article/view/1
2024-03-29T06:42:48Z
N
No. 51 (2012); 77-87
Accuracy of trajectory estimation algorithms based on distance- measuring surveillance data using different linearization methods
Naumenko, K. V.; ANTONOV Company, Kiev
Vasyliev, V. M.; National Aviation University, Kiev
2012-12-07
Authors who publish with this journal agree to the following terms:
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
url:http://radap.kpi.ua/radiotechnique/article/view/1
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Problem statement: The radar monitoring systems are used broadly for the moving object coordinates determination. Errors of the radar navigation systems are random in nature. The optimal estimation methods and algorithms of the aircraft (AC) flight trajectory parameters are used along with application of the statistical estimation theory for the data processing of such monitoring systems. Object of the work: This article deals with AC flight trajectory estimation using the data of a two-position monitoring system with two range-finding radar navigation stations located at the distance of d between them, each of which measures the distances to the aircraft. The influence of the different linearization methods on the trajectory estimation accuracy at the algorithms synthesis of optimal one-step data processing of two-positioned distance-measuring radionavigation system is investigated. The expressions for error statistical characteristics are defined as well as initial values for trajectory estimation algorithms offering an opportunity to provide the correctness of algorithms functioning. Conclusions: Three methods for linearized algorithms synthesis of one-step optimal estimation the aircraft movement trajectory parameters are shown in the work using the measuring results of a two-position range-finding monitoring system. Finally, results of computer modeling are presented and comparative analysis of the accuracy using three different approaches to the trajectory estimation system synthesis is performed. Simple application of each of the synthesized algorithms considered here considerably increases the trajectory evaluation accuracy as compared with the accuracy of the coordinate's calculation without using of optimal methods.
oai:ojs.radap.kpi.ua:article/4
2024-03-29T06:42:48Z
radiotechnique:electrodynamics
v2
http://radap.kpi.ua/radiotechnique/article/view/4
2024-03-29T06:42:48Z
N
No. 49 (2012); 13-17
Resonances of vacancies the multilayer lattices of the cylindrical dielectric resonators
Trubin, A. A.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
2012-04-27
Authors who publish with this journal agree to the following terms:
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
url:http://radap.kpi.ua/radiotechnique/article/view/4
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Multilayer lattices of dielectric resonators in infrared wavelength range has been studied. The screen influence on frequency parameters the different vacancies of DRs realized in the center of structure was considered. Q-factor increase showed for the resonances localized in region of vacancies at the expense of additional field screening by another DR flat lattices. The field amplitudes of partial DR distribution were calculated. The condition of the spectrum depression nearby localize oscillations has been determined.
oai:ojs.radap.kpi.ua:article/13
2024-03-29T06:42:48Z
radiotechnique:circuitry%26signals
v2
http://radap.kpi.ua/radiotechnique/article/view/13
2024-03-29T06:42:48Z
N
No. 49 (2012); 18-32
Image degradation matrix formation algorithm with usage of Adamar discrete transformation
Rybin, A. I.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
Ivanyuk, N. A.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
2012-02-27
Authors who publish with this journal agree to the following terms:
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
url:http://radap.kpi.ua/radiotechnique/article/view/13
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Algorithm for symbolic method realization of forming image degradation matrix at Adamar conversion transformants area is proposed. Algorithm considers block-diagonal structure of degradation matrix, that allows notably simplification of evaluation of matrix in any range. Obtained symbolic expressions of degradation matrix elements have allowed notably increase calculation accuracy on account of absence of addition subtraction operations of same numbers (counts) that is a must in numerical methods using. Developed algorithm allows greatly decrease number of laborious operations (multiplying division) at matrix G forming, that allows notably simplify forming algorithm.
oai:ojs.radap.kpi.ua:article/14
2024-03-29T06:42:48Z
radiotechnique:circuitry%26signals
v2
http://radap.kpi.ua/radiotechnique/article/view/14
2024-03-29T06:42:48Z
N
No. 49 (2012); 33-41
Optimum algorithms of division two mutually unortogonal signals
Yerokhin, V. F.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
Peleshok, Ye. V.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
2012-02-27
Authors who publish with this journal agree to the following terms:
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
url:http://radap.kpi.ua/radiotechnique/article/view/14
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«Base» algorithms are considered coherent, kvazikogerentnogo and un-coherent – autocorrelation division of useful digital signal and similar to him unortogonal hindrance which exceeds an useful signal on instantaneous power. Under un-coherent treatment of signals is understand a situation, when one of two vzaemnozavazhayuchikh signals demodulyuet'sya coherently (kvazikogerentno), and second – non-coherent (autocorrelation). Practical application of these algorithms allows to realize the repeated use of frequencies, busy at powerful radiations, – for example, on the second basis. Thus a basic user at some additionalss can even and not to notice the fact of the repeated use of frequencies.
oai:ojs.radap.kpi.ua:article/15
2024-03-29T06:42:48Z
radiotechnique:circuitry%26signals
v2
http://radap.kpi.ua/radiotechnique/article/view/15
2024-03-29T06:42:48Z
N
No. 49 (2012); 42-51
Method of signal processing on the basis of non-expansive uniformly continuous mapping
Fedorov, E. E.; Donetsk Academy of Motor Transport, Donetsk
2012-02-27
Authors who publish with this journal agree to the following terms:
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
url:http://radap.kpi.ua/radiotechnique/article/view/15
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In article the method of signal processing on the basis of non-expansive uniformly continuous mapping operating in compact metric spaces which provides construction of effective model of signal patterns classification is developed. The offered method is intended for technical and biological objects identification and control of their condition.
oai:ojs.radap.kpi.ua:article/16
2024-03-29T06:42:48Z
radiotechnique:circuitry%26signals
v2
http://radap.kpi.ua/radiotechnique/article/view/16
2024-03-29T06:42:48Z
N
No. 49 (2012); 52-57
The Results of the assessment of stability of linear parametric systems by three methods
Shapovalov, Yu. I.; Lviv Polytechnic National University, Lviv
Smal, D.; Lviv Polytechnic National University, Lviv
2012-02-27
Authors who publish with this journal agree to the following terms:
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
url:http://radap.kpi.ua/radiotechnique/article/view/16
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This paper contains the comparison of results of the assessment of stability of linear parametric systems by three methods: frequency symbolic method, the method of slow amplitudes and the method based on Lyapunov's second method. The Assessment of stability done for systems of second order with periodically varying parameters.
oai:ojs.radap.kpi.ua:article/17
2024-03-29T06:42:48Z
radiotechnique:circuitry%26signals
v2
http://radap.kpi.ua/radiotechnique/article/view/17
2024-03-29T06:42:48Z
N
No. 49 (2012); 58-65
Analysis of structure of quasi-optimal strategy for optimization of analog circuits
Zemliak, A. M.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
2012-02-27
Authors who publish with this journal agree to the following terms:
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
url:http://radap.kpi.ua/radiotechnique/article/view/17
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Application of optimal control theory allowed generalizing methodology of analog circuit optimization. The problem of search of minimum at times strategy of circuit optimization is formulated as a classic problem of optimization of functional of optimal control theory. A basic instrument here is a vector of control functions, allowing redistributing the expenses of processor time between the task of circuit analysis and procedure of parametric optimization. Introduced before special function, being the normalized Lyapunov function of designing process, allows finding the optimum or quasioptimum structure of vector of control functions for minimization of circuit optimization process time.
oai:ojs.radap.kpi.ua:article/18
2024-03-29T06:42:48Z
radiotechnique:circuitry%26signals
v2
http://radap.kpi.ua/radiotechnique/article/view/18
2024-03-29T06:42:48Z
N
No. 49 (2012); 66-70
Analysis of sounding signal with the trapezoidal frequency intra-modulation
Mrachkovskiy, O. D.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
Reutskaya, Yu. Yu.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
Solovyov, V. S.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
2012-02-27
Authors who publish with this journal agree to the following terms:
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
url:http://radap.kpi.ua/radiotechnique/article/view/18
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A signal with a trapezoidal linear frequency modulation and its properties are considered, figures of amplitude spectrum of signal are drawn, figures of ambiguity diagram, cross-correlation functions on different levels from the maximum and isoresponse ambiguity function in strong and weak fields are shown. Changes of signal characteristics depending on change of a component of a constant frequency are outlined. Considered properties of section of cross-correlation function to two peaks and effect of these properties. Advantages and disadvantages of the signal, its application field are outlined.
oai:ojs.radap.kpi.ua:article/19
2024-03-29T06:42:48Z
radiotechnique:telecommunications
v2
http://radap.kpi.ua/radiotechnique/article/view/19
2024-03-29T06:42:48Z
N
No. 49 (2012); 71-76
FPGA Implementation of Viterbi Decoder for Satellite System
Pavlenko, M. P.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
Bychkov, V. E.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
Pravda, V. I.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
2012-01-27
Authors who publish with this journal agree to the following terms:
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
url:http://radap.kpi.ua/radiotechnique/article/view/19
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Convolutional encoding with Viterbi decoding is a powerful method for forward error correction. This paper presents a short overview of a Viterbi decoder FPGA (Field-Programmable Gate Array) implementation for Thuraya wireless communication sys-tem in Verilog HDL (Hardware Description Language). The main goal of this project was re-source-optimized implementation of the decoder on the target platform. In this project, Viterbi Decoder is implemented on Altera Cyclone III FPGA. The transmitter is of constraint length 5 and of rate 1/4. The Viterbi decoder can operate at a frequency of 90 MHz.
oai:ojs.radap.kpi.ua:article/20
2024-03-29T06:42:48Z
radiotechnique:telecommunications
v2
http://radap.kpi.ua/radiotechnique/article/view/20
2024-03-29T06:42:48Z
N
No. 49 (2012); 77-82
Determination of the configuration computer systems high-performance handling large volumes of data
Dyuzhayev, L. P.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
Sokolov, D. Y.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
2012-02-27
Authors who publish with this journal agree to the following terms:
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
url:http://radap.kpi.ua/radiotechnique/article/view/20
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This paper provides a mathematical model of computing complex (a network of queuing). In what volume of processed data outgrows memory compute nodes, so all data are divided into equal blocks of fixed size that are distributed through volumes of data storage and process the task is divided into cycles so that one node computing cluster process one unit data for one cycle. Also describes the method for determining the optimal (by the criterion of productivity) complex configurations based on industry standard benchmarks computing clusters and storage systems.
oai:ojs.radap.kpi.ua:article/23
2024-03-29T06:42:48Z
radiotechnique:circuitry%26signals
v2
http://radap.kpi.ua/radiotechnique/article/view/23
2024-03-29T06:42:48Z
N
No. 44 (2011); 9-15
Analysis of firmness of different strategies of optimization of analog circuits
Zemliak, A. M.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
Markina, T. M.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
Authors who publish with this journal agree to the following terms:
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
url:http://radap.kpi.ua/radiotechnique/article/view/23
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The problem of designing of analog circuits is presented in the generalized formulation. Generalization consists in possibility of refusal of performance of laws of Kirchhoff during designing process at their unconditional performance in its final point. Thus there is a possibility to redistribute an expense of computer time between the block of the analysis of a circuit and the block of parametrical optimization. Basic element of this redistribution is specially entered vector of control. In such a case the process of designing of a circuit will be formulated in terms of the theory of control as controlled dynamic system. For the analysis of properties of such system it is offered to use the concept of function of Lyapunov of dynamic system. Various forms of function of Lyapunov are offered. The analysis of behavior of func-tion of Lyapunov and its derivative has allowed establishing considerable correlation be-tween properties of this function and processor time of designing of a circuit.
oai:ojs.radap.kpi.ua:article/24
2024-03-29T06:42:48Z
radiotechnique:electrodynamics
v2
http://radap.kpi.ua/radiotechnique/article/view/24
2024-03-29T06:42:48Z
N
No. 45 (2011); 9-15
Electrodynamical analysis of frequency-selective surfaces
Naidenko, V. I.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
Shumakov, D. S.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
Authors who publish with this journal agree to the following terms:
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
url:http://radap.kpi.ua/radiotechnique/article/view/24
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The effective and universal algorithm of diffraction characteristics calculation of the field scattered by 2D rectangular element frequency-selective surface. Galerkin method was used to solve equations, received from boundary conditions. The system of linear algebraic equations of finite order was solved. For the field’s description of given 2D periodic structure in the terms of space harmonics Floquet theorem was used. Results obtained in the work match data from foreign sources. Computer program based on the algorithm might be used for reflection and transmission characteristics calculation of the structures with unit cell different sizes.
oai:ojs.radap.kpi.ua:article/25
2024-03-29T06:42:48Z
radiotechnique:electrodynamics
v2
http://radap.kpi.ua/radiotechnique/article/view/25
2024-03-29T06:42:48Z
N
No. 47 (2011); 13-18
Application of the method of geometrical optics to determine the effect of frequency dispersion on the propagation of magnetostatic waves in the delay line
Kudinov, E. V.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
2012-10-11
Authors who publish with this journal agree to the following terms:
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
url:http://radap.kpi.ua/radiotechnique/article/view/25
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Applying the method of geometrical optics, it is shown that for a dispersive delay line, provided that the parameters of pulse linear FM and dispersion parameters of MSW coordinated so that the RF pulse is compressed, there is a point where the characteristics intersect, and this point is called a spatial-temporal focus. That is, there exists an optimal ratio between the parameters of linear FM, the frequency dispersion in the delay line, its length and, consequently, the delay time at which the RF pulse compression maximum. In certain limits to maintain this optimum ratio is possible by regulating the intensity of a constant magnetic field.
oai:ojs.radap.kpi.ua:article/27
2024-03-29T06:42:48Z
radiotechnique:circuitry%26signals
v2
http://radap.kpi.ua/radiotechnique/article/view/27
2024-03-29T06:42:48Z
N
No. 44 (2011); 16-28
Determination of derivatives of transfer resistance on surface conductivity of finite elements by the conductivity method for solving the forward problem of Electrical Impedance Tomography
Rybina, I. O.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
Rybin, A. I.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
Sharpan, O. B.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
Authors who publish with this journal agree to the following terms:
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
url:http://radap.kpi.ua/radiotechnique/article/view/27
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The equation of derivative of square finite element surface conductivity, which is located in the arbitrary place of the domain, with current excitation on internal knots of the domain is got in this article. Calculation of transfer resistance of zones for zone and ray conductivity method due to complication of such equation with great number of finite elements is offered. These equations aren’t depended on shape of finite elements, but they are depended on shape of zones. Reduction of order of matrix for decreasing of labour intensiveness of operation is proposed. It is necessary due to the presence of great number of internal knots, which are deleted with equivalent transformations. The equivalent transformation of inverse matrix consists on deletion rows and columns with numbers of internal knots from matrix of all phantom, and for calculation of each column of transfer resistance derivatives it consists on deletion of zero rows and columns for this zone or that are multiplied with zero columns of conductivity matrix of zone.
oai:ojs.radap.kpi.ua:article/28
2024-03-29T06:42:48Z
radiotechnique:circuitry%26signals
v2
http://radap.kpi.ua/radiotechnique/article/view/28
2024-03-29T06:42:48Z
N
No. 44 (2011); 29-36
The application conditions of the compact modified method of curve fitting for parametric synthesis of switched-capacitor networks
Artemenko, M. E.; State University of Information and Communication Technologies, Kiev
Rybin, A. I.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
Kumsiya, M. S.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
2011-02-02
Authors who publish with this journal agree to the following terms:
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
url:http://radap.kpi.ua/radiotechnique/article/view/28
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The topological and algebraic conditions for formation of ARC-prototype state equation were obtained to diagnose the possibility of application the compact modified method of curve fitting for parametric synthesis of SC-filter directly on its circuit or element’s connection matrix. The formal mathematical apparatus of forming the ARC-prototype’s compact equation of electric equilibrium on the element’s connection matrix was developed, which allows to reduce the dimension of the synthesized filter to the number of prototype’s capacitors. The relations to account nonideal parameters of operational amplifiers for the prototype’s compact equation of electric equilibrium were obtained, which improve the accuracy of parametric synthesis of switched-capacitor networks.
oai:ojs.radap.kpi.ua:article/29
2024-03-29T06:42:48Z
radiotechnique:circuitry%26signals
v2
http://radap.kpi.ua/radiotechnique/article/view/29
2024-03-29T06:42:48Z
N
No. 44 (2011); 37-47
Analysis of linear systems with the usage of multiple transformations with Taylor series
Rybina, I. O.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
Vivcharyk, O. Ya.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
Yakubenko, A. A.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
Authors who publish with this journal agree to the following terms:
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
url:http://radap.kpi.ua/radiotechnique/article/view/29
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The method for solving the problems of analysis merely compatible signal (archiving, recognition, compression, etc.) and passing this signal through a linear system (for creation a single mathematical tools) with use of multiple orthogonal transforms with the usage complex frequency is proposed. At the same time analysis, for example, explored the similarities and differences between a reference signal is performed by using the selected discrete orthogonal transformation, and analyze it’s passing through a linear system (circuit) –with the help of multiple transformation, such as the progressive conversion of the signal samples is provided in natural coordinates, matrix operators of these two changes as a result respond discrete Fourier transform. The second transformation has transforms, other than Fourier transforms, but they performed all theorems and properties of Fourier transformation, including theorems on differentiation and integration of originals, allowing for analysis to use Ohm's law. To approximate the spectra change, other than normal, the Taylor series are relevant calculation formulas for each of the complex frequency , for implementation of which it is necessary to obtain the inverse matrix of nodal conduction. Unlike the approximation of frequency response spectra of Fourier transform all of the multiple transformations are sensitive to parameter changes in one frequency . It also has been given an example of calculating the derivative.
oai:ojs.radap.kpi.ua:article/30
2024-03-29T06:42:48Z
radiotechnique:telecommunications
v2
http://radap.kpi.ua/radiotechnique/article/view/30
2024-03-29T06:42:48Z
N
No. 44 (2011); 48-53
Engineering of lightguide with enlarged effective area for telecommunication lines
Levandovskyy, V. G.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
2012-10-11
Authors who publish with this journal agree to the following terms:
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
url:http://radap.kpi.ua/radiotechnique/article/view/30
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The technique of engineering of lightguides with refraction index of singlemode inhomogeneous fibre optimized for inlarge effective area of mode field cross section is presented/ The method of solving of return scattering problem consisting in restoration of differential pperator from its spectral function is based in this technique. For verification of results the model experiment with solving of direct problem for obtaining waveguides is executed. Parameters of singlemode optical fibre that satisfy to the requirements for up to date telecommunication optical lines with spectral multiplexing are obtained.
oai:ojs.radap.kpi.ua:article/34
2024-03-29T06:42:48Z
radiotechnique:radio-navigation
v2
http://radap.kpi.ua/radiotechnique/article/view/34
2024-03-29T06:42:48Z
N
No. 44 (2011); 54-57
Reduction of systemotechnical complex model to a level of multielement physical system
Bychkovsky, V. A.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
2012-10-11
Authors who publish with this journal agree to the following terms:
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
url:http://radap.kpi.ua/radiotechnique/article/view/34
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Reduction method of systemotechnical complex (STC) model is propose for principal regularity elucidation of part in wholeness unification and analysis of components in STC interaction. The analysis of characters in STC on information level is fulfil. The dependences of information characters of system and STC from essential parameters is define. Limitations on model’s characters of STC are determine. The results discover the possibility of STC analysis on macroscopic level.
oai:ojs.radap.kpi.ua:article/38
2024-03-29T06:42:48Z
radiotechnique:radio-navigation
v2
http://radap.kpi.ua/radiotechnique/article/view/38
2024-03-29T06:42:48Z
N
No. 44 (2011); 58-67
Comparative analysis of methods for testing software of radio-electronic equipment
Mirskikh, G. A.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
Reutskaya, Yu. Yu.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
Authors who publish with this journal agree to the following terms:
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
url:http://radap.kpi.ua/radiotechnique/article/view/38
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The analysis of the concepts of quality and reliability of software products that are part of the radio-electronic equipment is making. Basis testing methods of software products that are used in the design of hardware and software systems, to ensure quality and reliability are given. We consider testing in accordance with the methodology of the "black box" and "white box" methods of integration testing from the bottom up and top down, as well as various modifications of these methods. Efficient criteria that allow you to select the method of testing programs based on their structure and organizational and financial factors that affect the quality of the implementation of the design process are leaded.
oai:ojs.radap.kpi.ua:article/39
2024-03-29T06:42:48Z
radiotechnique:microwaves
v2
http://radap.kpi.ua/radiotechnique/article/view/39
2024-03-29T06:42:48Z
N
No. 44 (2011); 68-75
Microstrip band-pass filter based on resonators with quarter-wave coupling
Shkapa, V. V.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
Kotserzhynskyi, B. A.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
Authors who publish with this journal agree to the following terms:
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
url:http://radap.kpi.ua/radiotechnique/article/view/39
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The synthesis procedure of the microstrip band-pass filter based on resonators with quarter-wave coupling is considered. The nonuniform microstrip line electromagnetic field complexity demands using of some mathematical models with the stepby-step field specificity taking into account, when the previous model calculations results become the initial data for the next model. The component coupling increases and new type wave modes appear when the frequency rises and the filter dimensions decrease. According to the concerned procedure: the filter in the 11 GHz band was designed (synthesized and made), the filter in the 26 GHz band was synthesized.
oai:ojs.radap.kpi.ua:article/40
2024-03-29T06:42:48Z
radiotechnique:microwaves
v2
http://radap.kpi.ua/radiotechnique/article/view/40
2024-03-29T06:42:48Z
N
No. 44 (2011); 76-81
Microwave antennas, based on dielectric resonators circular arrays
Trubin, A. A.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
2012-10-11
Authors who publish with this journal agree to the following terms:
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
url:http://radap.kpi.ua/radiotechnique/article/view/40
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It’s examined 2-D structures, representative by a cylindrical Dielectric Resonator (DR) system, situated on the planar metal surface around active irradiator, coupled with microwave line. Every DR becomes excited on it lowest resonance , and all structure as a whole are passive reflecting system, forming directional diagram of active radiation source. It’s demonstrated, that similar structures may effectively sharpen a directional diagram of antennas. On the basis an approximate solution of Maxwell equations has been developed antenna model. The basic antenna parameters – the radiation pattern, DR amplitudes and reflection coefficient, has been calculated. It’s investigated a possibility of working frequency band widening with improvement of radiation pattern.
oai:ojs.radap.kpi.ua:article/52
2024-03-29T06:42:48Z
radiotechnique:electrodynamics
v2
http://radap.kpi.ua/radiotechnique/article/view/52
2024-03-29T06:42:48Z
N
No. 47 (2011); 19-29
The resonances of dielectric sphere shielded by one dimensional photonic crystal
Trubin, A. A.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
Authors who publish with this journal agree to the following terms:
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
url:http://radap.kpi.ua/radiotechnique/article/view/52
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The problem of quality factor rising for low permittivity dielectric resonator (DR), most significant in millimeter and infrared wavelength ranges, has been solved. Maxwell equations for multi-layer dielectric structure realizing spherical DR screening by 1-D photonic crystal has been solved. Received data are allowing to assert that lattice forming on the DR surface can adduce to significant increasing of it Q-factor for resonances with large values of radial indexes. It's noting a possibility significant frequency spectrum depression in comparison to other resonance types.
oai:ojs.radap.kpi.ua:article/53
2024-03-29T06:42:48Z
radiotechnique:microwaves
v2
http://radap.kpi.ua/radiotechnique/article/view/53
2024-03-29T06:42:48Z
N
No. 44 (2011); 82-88
The investigation of dual frequency microstrip antenna
Vydalko, O. E.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
Martynyuk, S. Ye.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
Authors who publish with this journal agree to the following terms:
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
url:http://radap.kpi.ua/radiotechnique/article/view/53
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Paper presents the calculated characteristics of the dual frequency microstrip antenna working in C- and L-bands. Results were obtained by finite-difference time domain method. Dual frequency antenna consists of perforated patch for the L-band and 2×2 patch elements subarray for C-band. Paper focus on radiation and matching characteristics and also investigates mutual coupling effects of integrated antenna in both frequency bands for different sizes of perforated low frequency radiating patch. It was shown that mutual coupling effects can considerably deteriorate input impedance matching characteristics and moreover leads to the radiation pattern distortion and side lobe level increasing for higher frequency band. Developed dual frequency antenna can be the key element for the large dual frequency planar antenna array.
oai:ojs.radap.kpi.ua:article/54
2024-03-29T06:42:48Z
radiotechnique:microwaves
v2
http://radap.kpi.ua/radiotechnique/article/view/54
2024-03-29T06:42:48Z
N
No. 44 (2011); 89-95
Film disk resonators based on magnetostatic oscillations for microwave generators
Kudinov, E. V.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
Authors who publish with this journal agree to the following terms:
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
url:http://radap.kpi.ua/radiotechnique/article/view/54
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The guidelines for building walk-through disk resonators based on magnetostatic oscillations, discs which are made by etching of epitaxial yttrium iron garnet film, intended for use as the frequency-sets element of microwave oscillator, constructed by the ring scheme. Experimental studies have established that, at nearly twice the restructuring of the resonant frequency, resonators have Q-factor of at least 1000, and it increases with frequency. Since the construction of new disco film resonator is planar, it allows you to combine them into a single planar structure with a microwave amplifier for the construction of a ring oscillator circuit with an electrical microwave frequency tuning.
oai:ojs.radap.kpi.ua:article/59
2024-03-29T06:42:48Z
radiotechnique:microwaves
v2
http://radap.kpi.ua/radiotechnique/article/view/59
2024-03-29T06:42:48Z
N
No. 44 (2011); 96-103
Coupling coefficient of a cylindrical dielectric resonator coupled with a microstrip line using orthogonal mutual orientation
Trubarov, I. V.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
2012-10-11
Authors who publish with this journal agree to the following terms:
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
url:http://radap.kpi.ua/radiotechnique/article/view/59
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The method of analytical calculation of a coupling coefficient of a cylindrical dielectric resonator coupled with an edge microstrip line in case of their orthogonal mutual orientation is stated. The comparison between three methods of calculation the value of edge microstrip line magnetic field strength is made: finite difference method, conformal map method and finite element method. The technique of calculation the value of a coupling coefficient of resonator coupled with transmission line by given experimental values of system transmission coefficient is stated. The dependence of a coupling coefficient versus the distance between a resonator and a line is studied. The comparison between theoretical and experimental data is provided.
oai:ojs.radap.kpi.ua:article/61
2024-03-29T06:42:48Z
radiotechnique:microwaves
v2
http://radap.kpi.ua/radiotechnique/article/view/61
2024-03-29T06:42:48Z
N
No. 43 (2010); 14-23
Mathematical model of delay lines based on magnetostatic waves
Kudinov, E. V.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
Authors who publish with this journal agree to the following terms:
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
url:http://radap.kpi.ua/radiotechnique/article/view/61
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On the example of the delay line have demonstrated the possibility of applying the principle of decomposition to construct mathematical models of microwave devices using magnetostatic waves (MSW) in a magnetized epitaxial ferrite films, which allows for a unified methodological basis and the lowest cost to the experimental optimization design of MSW devices for various applications
oai:ojs.radap.kpi.ua:article/62
2024-03-29T06:42:48Z
radiotechnique:radio-metering
v2
http://radap.kpi.ua/radiotechnique/article/view/62
2024-03-29T06:42:48Z
N
No. 44 (2011); 104-109
Measuring of reflectivity in the noise electromagnetic fields
Skripnik, Yu. A.; Kyiv National University of Technologies and Design, Kiev
Yanenko, A. F.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
Shevchenko, K. L.; Kyiv National University of Technologies and Design, Kiev
Vaganov, A. A.; Kyiv National University of Technologies and Design, Kiev
2012-10-12
Authors who publish with this journal agree to the following terms:
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
url:http://radap.kpi.ua/radiotechnique/article/view/62
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The features of measuring of reflectivity (R) are considered in the noise electromagnetic fields. Measuring possibility is grounded R comparing of him to the standard value. A measuring method is offered R dielectric materials at their irradiation by noise SHF by a signal. Possibility of receipt of quantitative estimation is rotined R in the weak electromagnetic fields due to the use of modulation measuring device of noise. Basic betweennesses are resulted SHF by signals and testimonies of radiometer.
oai:ojs.radap.kpi.ua:article/68
2024-03-29T06:42:48Z
radiotechnique:design
v2
http://radap.kpi.ua/radiotechnique/article/view/68
2024-03-29T06:42:48Z
N
No. 44 (2011); 110-121
A technique of account of a thermal mode coolers of the processor of personal electronic computer
Uvarov, B. M.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
2012-10-12
Authors who publish with this journal agree to the following terms:
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
url:http://radap.kpi.ua/radiotechnique/article/view/68
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The mathematical model of process a thermal of the processor of personal electronic computer as system of two differential equations is offered. The generalized thermal circuit scheme is given. The analytical decision of the equations is carried ou consistently by methods of final integrated transformations and Laplacetransformation. The thermal processes are considered as the stochastic phenomena, therefore formulas for accounts of temperatures are submitted by functions with probability by parameters. Is shown, that the modern mathematical packages or specially created program modules are necessary for accounts of temperatures.
oai:ojs.radap.kpi.ua:article/69
2024-03-29T06:42:48Z
radiotechnique:design
v2
http://radap.kpi.ua/radiotechnique/article/view/69
2024-03-29T06:42:48Z
N
No. 44 (2011); 122-126
The magnetoresistive transformer of active power with semiconductors of the knot operation
Smolyaninov, V. G.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
Suchopara, A. N.; Association "Technical Centre Europe", Kiev
Authors who publish with this journal agree to the following terms:
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
url:http://radap.kpi.ua/radiotechnique/article/view/69
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This management it is possible to realize a magnetoresistive transformer by an electric way due to the change of tension of the field, that is within the limits of ferromagnetic resonance of tape which forms a pickoff. Regulation of phase correlations is necessary to be produced in the chain of current, which embraces a pickoff. The management facilities are considered with galvanic outcome and power semiconductors, the calculation of the switch elementes with the help of simple analytical equations.
oai:ojs.radap.kpi.ua:article/70
2024-03-29T06:42:48Z
radiotechnique:design
v2
http://radap.kpi.ua/radiotechnique/article/view/70
2024-03-29T06:42:48Z
N
No. 44 (2011); 127-135
A device of comparison of light-emitting diodes for a light stream
Mirskikh, G. A.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
Gurba, A. V.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
Authors who publish with this journal agree to the following terms:
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
url:http://radap.kpi.ua/radiotechnique/article/view/70
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The simple method of comparison of light-emitting diodes after a light stream and possible construction of setting of this method are presented in this article. Parabolic mirrors are specially entered in a construction, as directing concentrators of light stream, and vibromotor with automatic control. Near one focus of mirrors set a light-emitting diode which is envisaged on a vibromotor, and on an opposite mirror in focus fasten fotodetector. After including to the vibromotor, by oscillation vibrations a light-emitting diode in one of moments is combined with focus of parabolic mirror. Whereupon, a light stream is directed by a parabolic mirror on opposite and gathers in focus last, where and registered by fotodetector. The entered vibration imitates the frequent measuring of stream that saves time on realization of measuring.
oai:ojs.radap.kpi.ua:article/71
2024-03-29T06:42:48Z
radiotechnique:radio-navigation
v2
http://radap.kpi.ua/radiotechnique/article/view/71
2024-03-29T06:42:48Z
N
No. 50 (2012); 66-74
Searchless digital method of spectral dispersion-correlation radio direction finding for big antenna base
Tsyporenko, V. V.; Zhytomyr State Technological University, Zhytomyr
2012-11-30
Authors who publish with this journal agree to the following terms:
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
url:http://radap.kpi.ua/radiotechnique/article/view/71
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Searchless digital method of spectral dispersion-correlation radio direction finding for big antenna base is performed in this paper. Combination of double correlation and dispersion-correlation signal spectrum processing is the proposed method feature. It provides possibility of the large antenna base using and bearing determination by one channel method with minimum apparatuses charges, but in one cycle of correlation analysis so in real-time. The proposed method provides reduction of direction-finding dispersion error compared to known methods with high operating speed.
oai:ojs.radap.kpi.ua:article/72
2024-03-29T06:42:48Z
radiotechnique:radio-navigation
v2
http://radap.kpi.ua/radiotechnique/article/view/72
2024-03-29T06:42:48Z
N
No. 52 (2013); 102-110
Direct digital method fast-acting analysis of the correlation-interferometric radio direction-finding with reconstructing of spatial analytical
Tsyporenko, V. V.; Zhytomyr State Technological University, Zhytomyr
2013-03-24
Authors who publish with this journal agree to the following terms:
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
url:http://radap.kpi.ua/radiotechnique/article/view/72
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Introduction. Nowadays radio control of radio electronic devices must be carried out in the conditions of sticky electromagnetic wicket, large prior uncertainty in relation to the parameters of radiations, and also in the conditions of the real time realization. The use and researches of direct digital methods of correlation-interferometric direction-finding is perspective direction in radio control realization for the indicated terms. Fundamentals of researches. In this paper, the direct digital method fast-acting analysis of the correlation-interferometric radio direction-finding with reconstructing of spatial analytical signal is executed. The estimation of time charges, fast-acting and relative time efficiency of method is executed. Conclusions. It is certain that analyzed direct method of direction-finding provides a spatial selection and simultaneous direction-finding of radiations which get in the pass frequencies band of simultaneous analysis with a width to one hundred ten megahertz real-time with the use of only one signal processor.
oai:ojs.radap.kpi.ua:article/73
2024-03-29T06:42:48Z
radiotechnique:radio-navigation
v2
http://radap.kpi.ua/radiotechnique/article/view/73
2024-03-29T06:42:48Z
N
No. 49 (2012); 83-93
The identification features of signal response in nonlinear radar in the presence of obstacle nonlinear scatterers
Zinchenko, M. V.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
Zinkovskiy, J. F.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
Authors who publish with this journal agree to the following terms:
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
url:http://radap.kpi.ua/radiotechnique/article/view/73
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The task of detection the combined signal response by the specialized system of preliminary nonlinear probing (SPNP) from the obstacle nonlinear scatterers (NS) on the basis of structures "metal-oxide-metal" by means of receiving array antenna on a background of Gaussian noise is examined. For the creation of conception of the SPNB functioning the research of forming components of the combined signal response co-operation character from the obstacle nonlinear scatterers, which are arbitrarily carried in space and have different dispersive ability, is conducted. It is shown that for determination with some confidence probability of interaction character of the investigated combined signal response forming components from the obstacle NS, which are arbitrarily carried in space and have different dispersive ability at probing of the medium by the system of preliminary nonlinear probing, it is necessary jointly to analyze efficiency of detection the accepted signal response by array antenna with three methods − χ2-test, consistent treatment of signals and «max−λ» test.
oai:ojs.radap.kpi.ua:article/74
2024-03-29T06:42:48Z
radiotechnique:radio-navigation
v2
http://radap.kpi.ua/radiotechnique/article/view/74
2024-03-29T06:42:48Z
N
No. 49 (2012); 94-101
Correlation radio range finder
Sorochan, A. G.; Donetskyy National University, Donetsk
Dobriak, D. A.; Samsung Electronics Ukraine, Kyiv
Zabolotniy, E. V.; Donetskyy National University, Donetsk
Authors who publish with this journal agree to the following terms:
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
url:http://radap.kpi.ua/radiotechnique/article/view/74
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In work widely known methods of range measuring are short characterized. The basic attention is given features of signal processing in a correlation method of range measuring. The signal with angular modulation with one-voice-frequency fluctuation is used as a probing signal. The absence of Doppler effect on the formation of the correlation integral, the frequency instability of the transmitter, the phase change on reflection from the target is presented. It is noticed that the result of signal processing in the range measuring instrument is reduced to formation on an exit one-voice-frequency harmonious fluctuation equal to modulating frequency that provides high characteristics of a radio range finder.
oai:ojs.radap.kpi.ua:article/76
2024-03-29T06:42:48Z
radiotechnique:electrodynamics
v2
http://radap.kpi.ua/radiotechnique/article/view/76
2024-03-29T06:42:48Z
N
No. 45 (2011); 16-25
The methods of the square quad-ridged waveguides eigen functions and eigen values computation with the field behavior near-by a rib accounting
Pavlyuk, V. V.; Zhytomyr Military Institute of the National
aviation University, Zhytomyr
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Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
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Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
url:http://radap.kpi.ua/radiotechnique/article/view/76
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A methods of the regular square quad-ridged waveguides eigen functions eigen values computation is developed. By means of the partial areas method the analytical solutions of the wave equalization are received for a Z-shape area transversal the cut of square quad-ridged waveguides. The influence of electromagnetic field behavior near-by a rib on final results are accounted. The received solutions are to be convenient for consequent application at the decision of direct and reverse electrodynamic tasks of quad-ridged waveguides and horn antennas calculation.
oai:ojs.radap.kpi.ua:article/77
2024-03-29T06:42:48Z
radiotechnique:electrodynamics
v2
http://radap.kpi.ua/radiotechnique/article/view/77
2024-03-29T06:42:48Z
N
No. 45 (2011); 26-32
Evaluation of electromagnetic compatibility of highfrequency induction systems in a local facility
Rozvadovsky, A. F.; State enterprise “Testing center Omega”, Sevastopol
Shalileh, S.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
Authors who publish with this journal agree to the following terms:
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
url:http://radap.kpi.ua/radiotechnique/article/view/77
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The article shows one approach to assess the electromagnetic environment in a local facility that is running induction system for transferring high frequency signals. A distinctive feature of these systems is to use a reactive component of integrated energy flux of the electromagnetic field. To evaluate them in the aspects of electromagnetic compatibility (EMC) in the local object defined distribution of reactive power across the frequency spectrum. Current along the electric and magnetic radiators present as of complex Fourier series expressions are obtained for the components of electric and magnetic fields. For assessment the EMC induction systems transmit signals in a local facility proposed criterion of the difference actual and limiting factors of reactive power. It is shown that due to short radius of action (no more than 0,5 ... 1 m) and low power in data systems,electromagnetic compatibility with other devices inside a local object is provided.
oai:ojs.radap.kpi.ua:article/78
2024-03-29T06:42:48Z
radiotechnique:circuitry%26signals
v2
http://radap.kpi.ua/radiotechnique/article/view/78
2024-03-29T06:42:48Z
N
No. 45 (2011); 46-51
Comparative characteristics of the bases of wavelets to represent the speech signals
Styskun, A. M.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
Authors who publish with this journal agree to the following terms:
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
url:http://radap.kpi.ua/radiotechnique/article/view/78
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Wavelets allow us to delineate both a low frequency signal characteristics, and high-frequency components. This property is a significant advantage in problems of speech signal processing in comparison with the windowed Fourier transform, where, by varying the width of the window to choose the scale at which you want to highlight features in the signal. Discrete wavelet transform called the representation of signals in the form of a generalized Fourier series in the system of basic functions that arise from some source wavelet due to shift operations in time and change the time scale. The dependence of the relative error of approximation ofthe upper frequency spectrum, normalized to the scalefor two types of signals: the wavelet function and the Haar wavelet "Mexican hat".
oai:ojs.radap.kpi.ua:article/79
2024-03-29T06:42:48Z
radiotechnique:circuitry%26signals
v2
http://radap.kpi.ua/radiotechnique/article/view/79
2024-03-29T06:42:48Z
N
No. 45 (2011); 58-65
The comparative analysis of blind identification methods of systems and signals
Opolska, A. E.; Khmelnitsky Polytechnic College
Authors who publish with this journal agree to the following terms:
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
url:http://radap.kpi.ua/radiotechnique/article/view/79
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In work the comparative analysis of blind identification methods of MIMO (SIMO) - systems which is new technology of digital processing of signals is presented. This technology is used in the conditions of incomplete definiteness of parameters of object of identification. The basic method for the decision of the given problems is the method of the maximum likelihood, the method of mutual ratio is most effective under condition of the big ratio a signal/noise, and a method channel subspace for small dimensions of sample yields results which practically coincide with a method of mutual ratio, and a method channel subspace for small dimensions of sample yields results which practically coincide with a method of mutual ratio
oai:ojs.radap.kpi.ua:article/80
2024-03-29T06:42:49Z
radiotechnique:circuitry%26signals
v2
http://radap.kpi.ua/radiotechnique/article/view/80
2024-03-29T06:42:49Z
N
No. 45 (2011); 52-57
Ganzenko Generation and properties of Gold’s sequence
Mrachkovskiy, O. D.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
Chasnyk, A. A.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
Ganzenko, V. A.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
Authors who publish with this journal agree to the following terms:
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
url:http://radap.kpi.ua/radiotechnique/article/view/80
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The article shows principles generation of Gold's sequences, shown a block diagram of sequence generator, based on shift registers and step by step description of its work. We calculated the spectral characteristics of sequences of different lengths. Based on the analytical representation of the spectrum of the sequence was obtained expression for calculating the bandwidth. For Gold’s sequences of different length were calculated autocorrelation functions and levels of lateral release in comparison with the max length sequence, also were considered a periodic autocorrelation.
oai:ojs.radap.kpi.ua:article/81
2024-03-29T06:42:49Z
radiotechnique:radio-navigation
v2
http://radap.kpi.ua/radiotechnique/article/view/81
2024-03-29T06:42:49Z
N
No. 45 (2011); 77-83
Uniting of one-dimensional optimal filtering outcomes for semicausal and noncausal processing of Gaussian uniform images
Vishnevyy, S. V.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
Zhuk, S. Ya.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
Authors who publish with this journal agree to the following terms:
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
url:http://radap.kpi.ua/radiotechnique/article/view/81
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Linear algorithms of uniting of one-dimensional optimal filtering outcomes for semicausal and noncausal processing of Gaussian uniform images are synthesized. Designed algorithms are implemented in two stages. At the first stage the one-dimensional Kalman filtering of Gaussian uniform image observations along each of considered coordinates is executed. At the second stage uniting of computed at the first stage estimations is executed. Analysis of designed algorithms is done on the model example by means of statistical modeling on computer. Comparing of designed algorithm with known algorithms is carried out. Characteristics of accuracy of estimations computed by designed algorithms by means of semicausal and noncausal processing of Gaussian uniform images are shown.
oai:ojs.radap.kpi.ua:article/82
2024-03-29T06:42:49Z
radiotechnique:microwaves
v2
http://radap.kpi.ua/radiotechnique/article/view/82
2024-03-29T06:42:49Z
N
No. 49 (2012); 102-107
Using neural networks for the synthesis of microwave devices
Adamenko, V. O.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
Mirskikh, G. A.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
2012-02-27
Authors who publish with this journal agree to the following terms:
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
url:http://radap.kpi.ua/radiotechnique/article/view/82
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In this work the advantages of neural networks for the synthesis of microwave devices are considered. The problems which can occur using neural networks as the universal approximating system in problems of frequency-selective microwave devices synthesis are characterized. The expediency of solving these problems by using ensemble of neural networks is substantiated. Offered the architecture group which used for the practical implementation metal dielectric microwave filters, taking into account their characteristics in the stop bands above and below the pass band. The expediency of the further investigation of the proposed architecture in problems of synthesis of material objects is shown.
oai:ojs.radap.kpi.ua:article/83
2024-03-29T06:42:49Z
radiotechnique:microwaves
v2
http://radap.kpi.ua/radiotechnique/article/view/83
2024-03-29T06:42:49Z
N
No. 49 (2012); 108-113
Analysis methods for calculating the input impedance of a logarithmic spiral
Kovalchyk, D. A.; Sevastopol National Technical University, Sevastopol
2012-10-13
Authors who publish with this journal agree to the following terms:
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
url:http://radap.kpi.ua/radiotechnique/article/view/83
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This paper gives a comparative analysis of methods for calculating the input impedance of the spiral izluchataley, as well as the experimental values of the input resistance of the PSA and the theoretical, computed using the method of induced emf. Their comparison is done.
oai:ojs.radap.kpi.ua:article/84
2024-03-29T06:42:49Z
radiotechnique:microwaves
v2
http://radap.kpi.ua/radiotechnique/article/view/84
2024-03-29T06:42:49Z
N
No. 49 (2012); 114-121
Electrodynamics multi-band antennas
Nudga, A. A.; Sevastopol National Technical University, Sevastopol
2012-10-13
Authors who publish with this journal agree to the following terms:
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
url:http://radap.kpi.ua/radiotechnique/article/view/84
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This paper presents a method for determining the multiband antenna radiation pattern, which is based on the fractal Serpinski antenna. The method is based on a conditional subdivision radiating structures at elementary radiators. Next to find the currents in each elementary site of triangular. The next step is to find a component of the area of electric field. At the end, a summation of the components of the electric field of all the triangles in a point observation.
oai:ojs.radap.kpi.ua:article/85
2024-03-29T06:42:49Z
radiotechnique:microwaves
v2
http://radap.kpi.ua/radiotechnique/article/view/85
2024-03-29T06:42:49Z
N
No. 49 (2012); 129-135
Influence of inclusion parameters on microwave devices characteristics
Kuzmenko, O. M.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
Mirskikh, G. A.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
2012-02-27
Authors who publish with this journal agree to the following terms:
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
url:http://radap.kpi.ua/radiotechnique/article/view/85
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Microwave devices characteristics depend on parameters of inclusion, influence of which is not taken into attention in designing process despite the trend of designing and using of microwave devices in different conditions. Methodology of inclusion parameters influence on microwave devices characteristics estimation are proposed Methodology based on randomization of inclusion parameters simulates inclusion of devices in tracts with different parameters and gives possibility to get microwave devices characteristics in arbitrary tracts. Next statistical analysis allows to obtain estimation of characteristics and to forecast their distortion.
oai:ojs.radap.kpi.ua:article/86
2024-03-29T06:42:49Z
radiotechnique:radio-metering
v2
http://radap.kpi.ua/radiotechnique/article/view/86
2024-03-29T06:42:49Z
N
No. 49 (2012); 136-141
Automated equipment for determining the magnetic susceptibility of steels and alloys
Snizhnoi, G. V.; Zaporizhzhya National Technical University, Zaporizhzhya
Zhavzharov, E. L.; Zaporizhzhya National Technical University, Zaporizhzhya
2012-02-27
Authors who publish with this journal agree to the following terms:
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
url:http://radap.kpi.ua/radiotechnique/article/view/86
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Automated equipment for determining the susceptibility of steels and alloys proposed. The principle of operation of equipment units and their main characteristics are presented. Microprocessor system with AVR microcontrollers from ATMEL for equipment used. The algorithm of the program a microprocessor system for automatic operation of equipment considered. Dependence of the current compensation of the current force field as a text file on your computer equipment can be formed.
oai:ojs.radap.kpi.ua:article/87
2024-03-29T06:42:49Z
radiotechnique:radio-metering
v2
http://radap.kpi.ua/radiotechnique/article/view/87
2024-03-29T06:42:49Z
N
No. 49 (2012); 142-150
Structurally technical the aspects of measuring of concentration of easy aeroions are In-process considered the method of the opened collector
Korenivska, O. L.; Zhytomyr State Technological University, Zhytomyr
2012-02-27
Authors who publish with this journal agree to the following terms:
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
url:http://radap.kpi.ua/radiotechnique/article/view/87
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Вasic methods of measuring of concentration of easy aeroions, the features of their use, advantage, and failings are certain. It is suggested to use the method of the opened collector for measuring the concentration of easy aeroions. Technical and construction features are described realization of this method, which allow to conduct measuring of concentration of easy aeroions of air space of environment regardless of their state, closeness and speed of moving. A device, which will realize the method of the opened collector, which provides high exactness, sensitiveness and measuring speed, and also allows to conduct measuring in the concrete point of space, is described, to look after and fix intensity of concentration of electric charges of aeroions. Experimental verification of capacity of this method is conducted.
oai:ojs.radap.kpi.ua:article/88
2024-03-29T06:42:49Z
radiotechnique:design
v2
http://radap.kpi.ua/radiotechnique/article/view/88
2024-03-29T06:42:49Z
N
No. 49 (2012); 151-156
Assessment the probability of downtime reserved systems with maintenance
Ozirkovskyy, L. D.; Lviv Polytechnic National University, Lviv
Panskyi, T. I.; Lviv Polytechnic National University, Lviv
Sidorchuk, A. V.; Lviv Polytechnic National University, Lviv
2012-02-27
Authors who publish with this journal agree to the following terms:
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
url:http://radap.kpi.ua/radiotechnique/article/view/88
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The object of consideration is Redundant Fault-tolerant radioelectronic system with maintenance without automatic replacement of modules that are out of order. There is developed structural-automatic model for such systems, which allows you to determine the reliability indexes of such systems, namely the function of availability and probability of downtime during repairs.
oai:ojs.radap.kpi.ua:article/89
2024-03-29T06:42:49Z
radiotechnique:design
v2
http://radap.kpi.ua/radiotechnique/article/view/89
2024-03-29T06:42:49Z
N
No. 49 (2012); 157-165
Micromotor for electromechanical reflective polarization phase shifter
Sydoruk, Yu. K.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
Dovgan, V. M.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
2012-02-27
Authors who publish with this journal agree to the following terms:
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
url:http://radap.kpi.ua/radiotechnique/article/view/89
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The design of micromotor for electromechanical discrete polarizing reflective phase shifter for phased arrays of centimeter and millimeter bands is offer. The stator of the micromotor consists of two sections of the electromagnets, which are located between the rotor with permanent magnets. In one step the rotor engine can be rotated by an angle of ±45° or ±90°, which corresponds to phase shifts of 90°, 180° and 270°. Time for turning the rotor to one of the operational corners is (5/6) ms at the lowest possible energy costs. Experimentally tested and measured the basic parameters of the micromotor: the time change and energy costs for the phase shift; established the dependence of the rotor rotation at given angle and energy consumption for changing one discrete of phase shift as function of the voltage pulse that applied to the stator of the micromotor.
oai:ojs.radap.kpi.ua:article/90
2024-03-29T06:42:49Z
radiotechnique:biomedical-systems
v2
http://radap.kpi.ua/radiotechnique/article/view/90
2024-03-29T06:42:49Z
N
No. 49 (2012); 166-177
Comparison of classical and conductivity zones methods for solving EIT inverse problem
Sushko, I. O.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
Rybin, A. I.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
2012-02-27
Authors who publish with this journal agree to the following terms:
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
url:http://radap.kpi.ua/radiotechnique/article/view/90
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Comparison of classical iteration imagine reconstruction method and conductivity zones method properties in EIT from the point of view of calculation organization, expecting precision and computational cost of imagine receiving is carried out. Reasonably small transfer resistances sensitivity to surface conductivity changes of separate finite element is shown. Small sensitivity is appeared for finite elements, which are situated in the central part of phantom, and also for finite elements, which are situated in the phantom outline. Small sensitivity is the cause of derivative matrix bad conditionality, that is aggravated with big matrix order. It led to quantity instability by solving of inverse problem (reconstruction problem). Conductivity zones method allows to avoid some difficulties: leads to derivative matrix order reduction, increasing of sensitivity and matrix conditionality. Transfer resistances and derivatives values for uniform phantom and for phantoms with different inhomogeneities for assessment are proposed.
oai:ojs.radap.kpi.ua:article/91
2024-03-29T06:42:49Z
radiotechnique:design
v2
http://radap.kpi.ua/radiotechnique/article/view/91
2024-03-29T06:42:49Z
N
No. 44 (2011); 136-147
The stochastic functional characteristics of radioelectronic devices
Uvarov, B. M.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
Zinkovskiy, J. F.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
Authors who publish with this journal agree to the following terms:
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
url:http://radap.kpi.ua/radiotechnique/article/view/91
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The models of physical processes in radio electronic devices (RED) as the stochastic differential equations are considered. Is shown, that all physical processes in RED - stochastic, and functional characteristics of devices should be submitted by functions with stochastic by parameters. The stochastic differential equations for electromagnetic, electrical, mechanical, thermal processes are given and the methods of reception of their decisions are offered on the basis of the determined models. The examples of reception of the functional characteristics are given at mechanical and thermal influences.
oai:ojs.radap.kpi.ua:article/92
2024-03-29T06:42:49Z
radiotechnique:biomedical-systems
v2
http://radap.kpi.ua/radiotechnique/article/view/92
2024-03-29T06:42:49Z
N
No. 44 (2011); 148-156
Development and prototyping of impedance CT scan for measurement of complex resistance distribution
Gaydayenko, E. V.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
Movchanyuk, A. V.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
Rybin, A. I.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
Authors who publish with this journal agree to the following terms:
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
url:http://radap.kpi.ua/radiotechnique/article/view/92
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Structure and concepts of impedance CT scan for complex resistance distribution measurements of EIT section are proposed. The prototype of the CT scanner and the results of modeling are represented. Tomograph allows the impedance measurements inclusive transfer resistance for building a phantom (output voltage module and phase shift between output voltage and sours current). This allows you to extend the capabilities of diagnostic imaging in biology, medicine and technology. A prototyping tool showed both the opportunity and the relative ease of creating hardware tomograph. Experience has shown the need to reduce layout instrumental amplifier noise using narrowband filters.
oai:ojs.radap.kpi.ua:article/94
2024-03-29T06:42:49Z
radiotechnique:Reviews
v2
http://radap.kpi.ua/radiotechnique/article/view/94
2024-03-29T06:42:49Z
N
No. 44 (2011); 157-165
Wireless networks. Standard ZigBee (on the example of products of Atmel Corp.)
Lyashuk, O. M.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
Dyachenko, S. M.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
Authors who publish with this journal agree to the following terms:
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
url:http://radap.kpi.ua/radiotechnique/article/view/94
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The situation and prospects of wireless radio receivers and radio transmitters which use standard ZigBee is examined in this work. The specification of ZigBee is developed on the base of international standard of IEEE 802.15.4 for creation inexpensive wireless networks for transmission small amount of information with low-power consumption. Main feature of ZigBee is support of not only simple topologies of wireless connection but also difficult wireless networks at relatively low energy consumption. Products of company Atmel have the best support of ZigBee technology. ZigBee is used in the industrial monitoring systems, in a medical equipment, can be integrated in the systems of production process automation.
oai:ojs.radap.kpi.ua:article/95
2024-03-29T06:42:49Z
radiotechnique:Reviews
v2
http://radap.kpi.ua/radiotechnique/article/view/95
2024-03-29T06:42:49Z
N
No. 44 (2011); 166-184
Photonics. Present and future
Silakov, K. I.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
Silakova, T. T.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
Authors who publish with this journal agree to the following terms:
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
url:http://radap.kpi.ua/radiotechnique/article/view/95
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Short review of the literature in the field of photonics, which reflects the new technology of ultra-compact optical communications components, the use of generators to transmission light instead of wires is represented. This is - silicon photonics - finding ways to use semiconductor components and of standard semiconductor technology to create optical devices, silicon photonics - the creation of a silicon photonic waveguide. All of these components can be used in the construction of computer systems linked by powerful optical data networks. Optical communication system will eliminate the "bottleneck" due to the difference in memory bandwidth and processor speed, and improve overall performance computing plate-tformy.
oai:ojs.radap.kpi.ua:article/96
2024-03-29T06:42:49Z
radiotechnique:circuitry%26signals
v2
http://radap.kpi.ua/radiotechnique/article/view/96
2024-03-29T06:42:49Z
N
No. 47 (2011); 30-41
Fourier transformant area deconvolution condition. Construction of the image degradation matrix
Rybin, A. I.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
Ivanyuk, N. A.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
Authors who publish with this journal agree to the following terms:
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
url:http://radap.kpi.ua/radiotechnique/article/view/96
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Symbolic method of forming image degradation matrix at Adamar conversion transformants area is proposed. Algorythm of forming coefficients at distortion system impulse characteristics samples for any range of samples and product coefficients evaluation algorythm were developed. Algorithm obtained differs in simplicity, symbolic expressions enable to increase matrix forming speed-performance for matrixes, those are used for image restavration algorythm with additive noize with method of conditional deconvolution. Symbolic expressions enable to notably increase accuracy of matrix elements evaluation, considering to limited operand dimensionality.
oai:ojs.radap.kpi.ua:article/97
2024-03-29T06:42:49Z
radiotechnique:electrodynamics
v2
http://radap.kpi.ua/radiotechnique/article/view/97
2024-03-29T06:42:49Z
N
No. 48 (2012); 13-22
Solution of scattering problem on dielectric wedgeplaced between metal plates by boundary element method
Ruda, N. A.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
Prokopenko, Yu. V.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
Poplavko, Yu. M.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
Authors who publish with this journal agree to the following terms:
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
url:http://radap.kpi.ua/radiotechnique/article/view/97
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Solution ofscattering problem on dielectric wedge placed between metal plates by boundary element method is discussed.The problem is reduced to set of Fredholm integralequations of the first kind.The set was solved by Galerkinmethod. Due to low dimension of resulting system of linear algebraic equations the method demonstrates high efficiencyand faster computation than finite elementand finite difference in time domainmethods.Proposed method can be applied for rigorous simulation of micromechanically controlled microwave devices.
oai:ojs.radap.kpi.ua:article/98
2024-03-29T06:42:49Z
radiotechnique:circuitry%26signals
v2
http://radap.kpi.ua/radiotechnique/article/view/98
2024-03-29T06:42:49Z
N
No. 47 (2011); 42-49
Analysis of the behavior of the Lyapunov function in the optimization of analog circuits
Zemliak, A. M.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
Markina, T. M.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
Authors who publish with this journal agree to the following terms:
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
url:http://radap.kpi.ua/radiotechnique/article/view/98
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The process of optimization of analog circuits is defined mathematically as the dynamic controllable system. Thus the problem of minimization of processor time can be set forth as a task of minimization of time of transient of the dynamic system. For the analysis of properties of the similar system it is suggested to use conception of function of Lyapunov of the dynamic system. Analysis of this function and her temporal derivative allows to reveal correlation between complete processor time of optimization of circuit and behavior of function of Lyapunov.
oai:ojs.radap.kpi.ua:article/99
2024-03-29T06:42:49Z
radiotechnique:circuitry%26signals
v2
http://radap.kpi.ua/radiotechnique/article/view/99
2024-03-29T06:42:49Z
N
No. 47 (2011); 50-57
Properties of correlation functions of Gold’s sequence
Mrachkovskiy, O. D.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
Chasnyk, A. A.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
Authors who publish with this journal agree to the following terms:
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
url:http://radap.kpi.ua/radiotechnique/article/view/99
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The article shows detailed analysis of correlation function and cross correlation function of Gold’s sequence in comparison with max length sequence. The ambiguity function has been calculated.
oai:ojs.radap.kpi.ua:article/100
2024-03-29T06:42:49Z
radiotechnique:design
v2
http://radap.kpi.ua/radiotechnique/article/view/100
2024-03-29T06:42:49Z
N
No. 50 (2012); 53-59
The flat inductor impedance
Zakrevskyi, O. F.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
2012-11-30
Authors who publish with this journal agree to the following terms:
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
url:http://radap.kpi.ua/radiotechnique/article/view/100
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The method proposed for calculation a coil in free space is presented. Eddy current transducer mathematical model as a spiral flat inductor in free space is designed as example. It allowed to calculate its impedance, considering skin effect in conductor and to estimate its quality. The model is obtained with assump-tions about current distribution in a conductor using the discrete Hankel transform that re-duces machine time significantly. Current distribution function is based on phenomena re-versibility in nature, namely, electromagnetic field creates definite current distribution in conductive medium and such current distribution in conductive medium creates the same electromagnetic field in free space. Flat inductor impedance and coil quality at 1 MHz and DC are calculated.
oai:ojs.radap.kpi.ua:article/101
2024-03-29T06:42:49Z
radiotechnique:circuitry%26signals
v2
http://radap.kpi.ua/radiotechnique/article/view/101
2024-03-29T06:42:49Z
N
No. 47 (2011); 58-70
Classification of signals by using normal orthogonal transformation
Nizhebetska, Y. Kh.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
Authors who publish with this journal agree to the following terms:
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
url:http://radap.kpi.ua/radiotechnique/article/view/101
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Possibility of pattern recognition is considered on the procedure of creation of discrete ortogonal transformation offered by an author, in that the first transform coincides with a etalon signal. At the coincidence of the investigated signal with a test the spectrum of such transformation contains one unzero transform only, while appearance of other transforms in a spectrum testifies to their differences. Application of normal transformation for the estimation of similarity of signals by coefficients of transforms allows to enter numeral measure of estimation of such similarity. Procedure of recognition is widespread on the cases of two-dimensional and complex signals. Results over of the use of normal transformation are brought for the tasks of authentification of person by the dinamically entered signature and classification of the state of person by the pulse wave.
oai:ojs.radap.kpi.ua:article/102
2024-03-29T06:42:49Z
radiotechnique:telecommunications
v2
http://radap.kpi.ua/radiotechnique/article/view/102
2024-03-29T06:42:49Z
N
No. 47 (2011); 71-76
Logical analysis of process telecommand
Bychkovsky, V. A.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
Tsyganenko, S. P.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
Authors who publish with this journal agree to the following terms:
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
url:http://radap.kpi.ua/radiotechnique/article/view/102
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In the article the analysis of work systems of telecommand and set the relationship between the relative errors in their channels. To identify the main patterns of the relative errors using the procedure proposed by the logical analysis of analogies. The dependence between information of the channels systems telecommand. Considered a number process models telecommand which are based on an analogy with the topochemical reactions. The analysis procedure the telecommand process performed on the macroscopic level. Situation for know meanings of information in transmission datas canal and in control canal on beginning of observation was analyse. Situation for known meanings of information in transmission datas canal and in control canal on end of observation was analyse. The dependences between relative errors in different observation moments was determine.
oai:ojs.radap.kpi.ua:article/103
2024-03-29T06:42:49Z
radiotechnique:radio-navigation
v2
http://radap.kpi.ua/radiotechnique/article/view/103
2024-03-29T06:42:49Z
N
No. 47 (2011); 77-83
Analysis of navigation C/A - Code of GPS system
Mrachkovskiy, O. D.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
Chasnyk, A. A.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
Authors who publish with this journal agree to the following terms:
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
url:http://radap.kpi.ua/radiotechnique/article/view/103
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This article the formation of S/A - Code detail its ACF and CCF, in comparison with the max length sequence and Gold-sequence. Shows the ambiguity function and its sections at different levels. Also calculated the potential resolutions for the S/A - package. The article shows the formation of C/A - Code (C/A - coarse/acquisition, or clear/ acquisition), which used for Global Positioning System. Detaily investigated by the autocorrelation and crosscorrelation function of the code, in comparison with the max length sequence and Gold’s sequence. Ambiguity function and its sections at different levels were calculated in the strong and weak correlation, and the potential resolutions for the given code was calculate. In this paper, we calculated the amplitude and phase spectrum of the signal and its bandwidth.
oai:ojs.radap.kpi.ua:article/104
2024-03-29T06:42:49Z
radiotechnique:radio-navigation
v2
http://radap.kpi.ua/radiotechnique/article/view/104
2024-03-29T06:42:49Z
N
No. 47 (2011); 84-97
Dynamic characteristics of nonlinear scatterers during sensing
Zinchenko, M. V.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
Zinkovskiy, J. F.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
Authors who publish with this journal agree to the following terms:
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
url:http://radap.kpi.ua/radiotechnique/article/view/104
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It is shown that the nonlinear scatterers during sensing generate chaotic oscillations. The problem of reconstruction of dynamic systems from experimental data. Substantiated that the method your own origin may restore the only known dynamic system. It is noted that an advantage of this method is the ability to recover parameters of a nonlinear dynamical system with the combined action of both low frequency and high frequency of additive and multiplicative noise. It is suggested that the method can be used as a test of your ability to restore the parameters generating system implementations signals.
oai:ojs.radap.kpi.ua:article/106
2024-03-29T06:42:49Z
radiotechnique:microelectronics
v2
http://radap.kpi.ua/radiotechnique/article/view/106
2024-03-29T06:42:49Z
N
No. 50 (2012); 105-113
Ion-selective field-effect transistors. Threshold voltage calculation
Prischepa, M. M.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
Lozovyi, S. V.; V.E. Lashkaryov Institute of semiconductor physics, Kiev
2012-11-30
Authors who publish with this journal agree to the following terms:
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
url:http://radap.kpi.ua/radiotechnique/article/view/106
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Ion-selective field-effect transistors (ISFET) are being developed and improved to study ion solution composition. It is necessary to determine threshold ISFET voltage on the basis of process data for design and improvement of sensor control circuit. The threshold voltage analytical calculation for p-channel ISFET is presented in this article.
oai:ojs.radap.kpi.ua:article/107
2024-03-29T06:42:49Z
radiotechnique:biomedical-systems
v2
http://radap.kpi.ua/radiotechnique/article/view/107
2024-03-29T06:42:49Z
N
No. 50 (2012); 83-91
Determination of parameters of mathematical model of antenna connection with biological environment
Manoylov, V. P.; Zhytomyr State Technological University, Zhytomyr
Nazarchuk, L. Yu.; Zhytomyr State Technological University, Zhytomyr
2012-11-07
Authors who publish with this journal agree to the following terms:
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
url:http://radap.kpi.ua/radiotechnique/article/view/107
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The article is devoted to determination of electro-physical parameters of mathematical model of antenna connection with the environment of biological object. Principle of change of reflection coefficient near-by an aperture of antenna is used, which is an information about a change of dielectric permeability and temperature of biological environments. Expressions for reflection coefficient, relation of coefficients, conductivity and resistance as functions of many parameters are presented. Analysis of mathematical model « antenna -bioobject» presents the changes of reflection coefficient of radiation from the entrance of antenna, dielectric permeability of environment and conductivity. This method can be used in diagnostics of tumour diseases on the early stages.
oai:ojs.radap.kpi.ua:article/108
2024-03-29T06:42:49Z
radiotechnique:biomedical-systems
v2
http://radap.kpi.ua/radiotechnique/article/view/108
2024-03-29T06:42:49Z
N
No. 49 (2012); 178-183
Simulation of the normalized signal distortion monochromatic microwave generators
Yanenko, A. F.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
Yasinskiy, D. N.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
2012-02-27
Authors who publish with this journal agree to the following terms:
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
url:http://radap.kpi.ua/radiotechnique/article/view/108
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We consider the disadvantages of monochromatic generators for microwave resonance therapy mm range, the main of which is a narrow frequency range. Proposed method for extending the operating frequency range normalized by the distortion of a harmonic signal of the reference oscillator with a further release of the second and third harmonics of the signal. In the process of modeling the level of signal distortion is used for the Fourier transform of periodic functions. As a result of simulation showed the possibility of optimizing the ratio of the amplitudes of the second and third harmonics are sufficient for the construction of wide-range mm-range oscillators used in the technologies of quantum medicine.
oai:ojs.radap.kpi.ua:article/109
2024-03-29T06:42:49Z
radiotechnique:microelectronics
v2
http://radap.kpi.ua/radiotechnique/article/view/109
2024-03-29T06:42:49Z
N
No. 49 (2012); 184-190
Frequency modulated signal generation
Kotserzhynskyi, B. A.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
2012-01-27
Authors who publish with this journal agree to the following terms:
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
url:http://radap.kpi.ua/radiotechnique/article/view/109
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Compound frequency modulated signal generation process with simple integrated direct digital synthesis microcircuit is presented starting DDS microcircuit choice, time and modulation characteristics analysis, interface up to working model, control program design and frequency modulated signal generation. The experimental research results are in agreement with test signal spectrums theoretical computation. The compound frequency modulated signal generation possibility using simple integrated DDS chips circuits is proven
oai:ojs.radap.kpi.ua:article/110
2024-03-29T06:42:49Z
radiotechnique:funct_electronics
v2
http://radap.kpi.ua/radiotechnique/article/view/110
2024-03-29T06:42:49Z
N
No. 49 (2012); 191-197
The transformers of mechanical values on surface acoustic wave
Piddubnyi, V. O.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
Piddubnyi, V. V.; "Infopuls Ukraine", Kiev
2012-02-27
Authors who publish with this journal agree to the following terms:
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
url:http://radap.kpi.ua/radiotechnique/article/view/110
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Analyzed the structural scheme of transducers of mechanical quantities on the surface acoustic waves, we consider the scheme compensation converter mechanical values, discussed issues of improving the accuracy of measurement.
oai:ojs.radap.kpi.ua:article/111
2024-03-29T06:42:49Z
radiotechnique:funct_electronics
v2
http://radap.kpi.ua/radiotechnique/article/view/111
2024-03-29T06:42:49Z
N
No. 49 (2012); 198-202
Signal processing domain-acoustic processor in the autocorrelation mode
Belas, O. M.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
Ivanko, O. O.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
2012-02-27
Authors who publish with this journal agree to the following terms:
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
url:http://radap.kpi.ua/radiotechnique/article/view/111
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It is analyzed the signal / noise ratio, which can be achieved by the signal processing domain-acoustic processor. It is shown that the quality of signal processing by this method ideally determined by the quality of the primary signals. Provided that the recorded signal is formed by a powerful generator of low-noise, the autocorrelation mode, the reference signal generated from the signal, which is to be processed.
oai:ojs.radap.kpi.ua:article/112
2024-03-29T06:42:49Z
radiotechnique:funct_electronics
v2
http://radap.kpi.ua/radiotechnique/article/view/112
2024-03-29T06:42:49Z
N
No. 49 (2012); 203-211
Specifics of ultrasonic piezoelectric actuators resonant emitters application in mechatronics systems
Novosad, A. A.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
2012-02-27
Authors who publish with this journal agree to the following terms:
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
url:http://radap.kpi.ua/radiotechnique/article/view/112
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This research gives a description of an ultrasonic mechatronic system block diagram and justifies the necessity to control the acoustic field in the system. Such a control can be exercised by changing the vibration parameters of the piezoelectric emitter working surface. Therefore the piezoelectric emitter is considered as a link in the system of the automatic control. Possibility to use their transitions functions was experimentally proved. Conclusions were made regarding the introduction to a feedback system considering the parameters of the acoustic field
oai:ojs.radap.kpi.ua:article/113
2024-03-29T06:42:49Z
radiotechnique:Reviews
v2
http://radap.kpi.ua/radiotechnique/article/view/113
2024-03-29T06:42:49Z
N
No. 49 (2012); 212-218
Nanotechnologies of medicine
Silakov, K. I.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
Silakova, T. T.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
2012-02-27
Authors who publish with this journal agree to the following terms:
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
url:http://radap.kpi.ua/radiotechnique/article/view/113
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The brief review of literature is presented in area of nanotekhnologiy in medicine. It is marked that presently nanomediciny while does not exist, there are only projects embodiment of which in reality and will result in nanomedicine. Scientists assert that will come that day, when by nanotekhnologiy in the bloody cages of man it is possible it will be to build microscopic sensors, warnings at appearance of signs of radiation radiation or development of illness.Creation of molecular robots-doctors which can "live" into a human organism is expected also, removing all nascent damages, or preventing an origin such. Manipulating separate atoms and molecules, nanoboty will be able to carry out repair of cages. The forecast term of realization is a middle of XXI age.
oai:ojs.radap.kpi.ua:article/114
2024-03-29T06:42:49Z
radiotechnique:products
v2
http://radap.kpi.ua/radiotechnique/article/view/114
2024-03-29T06:42:49Z
N
No. 49 (2012); 219-221
Millimeter wave range band pass filters on a coplanar waveguide basis
Soloshenko, N. V.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
Omelianenko, M. Y.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
2012-02-27
Authors who publish with this journal agree to the following terms:
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
url:http://radap.kpi.ua/radiotechnique/article/view/114
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This paper presents the results of development of a millimeter wave range band pass filter. Coplanar waveguide sections are used to form resonators with end coupling. Filter synthesis is made using the results of electrodynamics analysis of discontinuities in the CST Microwave Studio software. The filter developed can be used as a part of millimeter wave range frequency converter.
oai:ojs.radap.kpi.ua:article/115
2024-03-29T06:42:49Z
radiotechnique:biomedical-systems
v2
http://radap.kpi.ua/radiotechnique/article/view/115
2024-03-29T06:42:49Z
N
No. 50 (2012); 75-82
Human functional state definition by the multilevel discrete wavelet transformation of a pulse wave biosignal
Pritula, A. A.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
Sharpan, O. B.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
2012-11-07
Authors who publish with this journal agree to the following terms:
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
url:http://radap.kpi.ua/radiotechnique/article/view/115
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The facilities of multilevel discrete wavelet transform of pulse wave biosignal are analysed to estimate the influence of testing factors on the human functional state. It is ascertained, that the nature of wavelet coefficient of a pulse wave biosignal and the value of their mean-square deviation makes possible for us to assess qualitatively and quantitatively influence of a definite testing factor to the functional state of a person and to identify general and personal tendency changes for particular person. It is perspective for the diagnostic of the personal`s habits and for a prediction of a personal reaction to the external influence.
oai:ojs.radap.kpi.ua:article/116
2024-03-29T06:42:49Z
radiotechnique:circuitry%26signals
v2
http://radap.kpi.ua/radiotechnique/article/view/116
2024-03-29T06:42:49Z
N
No. 38 (2009); 5-11
Complex Discrete Normal Ortogonal Transform
Nizhebetska, Y. Kh.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
Rybina, I. O.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
Yakubenko, A. A.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
Authors who publish with this journal agree to the following terms:
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
url:http://radap.kpi.ua/radiotechnique/article/view/116
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The algorithm of forming matrix operator of discrete normal orthogonal complex transform is offered, possibility of its application for the authentication of person after the dynamically entered signature is shown.
oai:ojs.radap.kpi.ua:article/117
2024-03-29T06:42:49Z
radiotechnique:circuitry%26signals
v2
http://radap.kpi.ua/radiotechnique/article/view/117
2024-03-29T06:42:49Z
N
No. 38 (2009); 11-19
Solution of the problem of the deconvolution on condition of the optimization of the form of the resulting pulse characteristic
Natalenko, S. S.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
Rybin, A. I.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
Authors who publish with this journal agree to the following terms:
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
url:http://radap.kpi.ua/radiotechnique/article/view/117
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Offered methods of the carrying the algorithm to restorations on criterion of the form of the resulting pulse characteristic in Fourier domain
oai:ojs.radap.kpi.ua:article/118
2024-03-29T06:42:49Z
radiotechnique:circuitry%26signals
v2
http://radap.kpi.ua/radiotechnique/article/view/118
2024-03-29T06:42:49Z
N
No. 48 (2012); 23-37
The relationship between RTF and Fourier transform
Rybin, A. I.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
Ivanyuk, N. A.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
Authors who publish with this journal agree to the following terms:
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
url:http://radap.kpi.ua/radiotechnique/article/view/118
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The algorithms of transition from RTF transform to Fourier transform and vice versa in different representations of functions of the linear system (in the form of a rational function, impulse characteristic and frequency characteristic) are proposed in the article. Both the positive and negative features of those transformations are revelead. An example to illustrate the simplicity and accuracy of the results if the proposed algorithms of the transition are implementation is shown . The algorithms can be easily worked out PC calculation.
oai:ojs.radap.kpi.ua:article/119
2024-03-29T06:42:49Z
radiotechnique:circuitry%26signals
v2
http://radap.kpi.ua/radiotechnique/article/view/119
2024-03-29T06:42:49Z
N
No. 48 (2012); 38-47
Analysis of the linear systems with the use of normal transform
Nizhebetska, Y. Kh.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
Authors who publish with this journal agree to the following terms:
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
url:http://radap.kpi.ua/radiotechnique/article/view/119
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The method of the use of discrete operator of normal transform is offered for the analysis of the signal pass through the linear systems. The analysis of application of the nonminimum derivation formulas using the method of the orthogonal transformation is realized. It leads to the increasing of the precision of the chosen method. Algorithm of multiple transform is offered, that enable to estimate distortion caused by the rejections of entrance signal or statistical variation of parameters of components of linear circle.
oai:ojs.radap.kpi.ua:article/120
2024-03-29T06:42:49Z
radiotechnique:circuitry%26signals
v2
http://radap.kpi.ua/radiotechnique/article/view/120
2024-03-29T06:42:49Z
N
No. 48 (2012); 48-55
Comparison of circuit optimization time for different strategies of structural basis
Zemliak, A. M.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
Markina, T. M.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
Authors who publish with this journal agree to the following terms:
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
url:http://radap.kpi.ua/radiotechnique/article/view/120
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The design methodology for analog circuits developed earlier on the basis of using the control theory makes it possible to apply important concepts and results of the specified theory. Lyapunov function defined for the electronic circuit optimization process proved to be a charact eristic allowing us to compare different optimization strategies. In this case the behavior of special function representing the logarithm of the Lyapunov function correlates well with the total processor time of circuit optimization and allows us to select the best optimization strategies in terms of the minimum processor time.
oai:ojs.radap.kpi.ua:article/121
2024-03-29T06:42:49Z
radiotechnique:microwaves
v2
http://radap.kpi.ua/radiotechnique/article/view/121
2024-03-29T06:42:49Z
N
No. 47 (2011); 98-105
Multi-Element Antennas Based on Cylindrical Dielectric Resonators and Microstrip Lines in Case of Their Orthogonal Mutual Orientation
Trubarov, I. V.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
Authors who publish with this journal agree to the following terms:
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
url:http://radap.kpi.ua/radiotechnique/article/view/121
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The design of a singleelement antenna, where cylindrical dielectric resonator, which is located orthogonally relative to feeding microstrip line, is used as radiating element, is described. There have been performed the numerical analysis of it and defined the functions approximating its directivity patterns. The schemes of feeding arrays of dielectric resonators for narrowing directivity patterns in E- and H-planes are proposed. The numerical analysis of antenna array 4x4 elements was performed and comparison of gained directivity patterns with ones calculated from analytical expressions was made. The graph of dependence of width of the main lobe in E- and H-planes for arrays of dielectric resonators versus the number of resonators in corresponding planes was plotted.
oai:ojs.radap.kpi.ua:article/122
2024-03-29T06:42:49Z
radiotechnique:microwaves
v2
http://radap.kpi.ua/radiotechnique/article/view/122
2024-03-29T06:42:49Z
N
No. 47 (2011); 106-110
Electromagnetic waves scattering by parabolic lattices of dielectric resonators
Trubin, A. A.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
2012-10-30
Authors who publish with this journal agree to the following terms:
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
url:http://radap.kpi.ua/radiotechnique/article/view/122
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Calculation results scattering of plane electromagnetic waves on a parabolic and plane lattices of dielectric resonators in the open space were presented. Every resonator of lattice excited on main azimuthally symmetric oscillation of it lowest magnetic mode. Common pattern of spatial distribution scattering field in the short-distance zone has been examined. It’s showing to a possibility of field increasing in the lattice focuses area.
oai:ojs.radap.kpi.ua:article/127
2024-03-29T06:42:49Z
radiotechnique:radio-metering
v2
http://radap.kpi.ua/radiotechnique/article/view/127
2024-03-29T06:42:49Z
N
No. 47 (2011); 111-117
Narrowband modulation radiometer-spectral analyzer
Yanenko, A. F.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
Skripnik, Yu. A.; Kyiv National University of Technologies and Design, Kiev
Kutsenko, V. P.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
Authors who publish with this journal agree to the following terms:
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
url:http://radap.kpi.ua/radiotechnique/article/view/127
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This article presents the block diagram of highly automated narrowband radiometer-spectral analyzer which operates by heterodyne signal transformation. It is being used for researching signals with continuous spectrum. The main feature of the device issuppression of the mirror channel signals and a highly automated frequency rebuild(scanning) in the range of operating frequencies. Scheme developed provides increasing of performance being microprocessor driven. Also precision and sensitivity of fast processes analysis is being increased because measurement result doesn’t depend on the receiving antenna and feeder noise levels.
oai:ojs.radap.kpi.ua:article/128
2024-03-29T06:42:49Z
radiotechnique:design
v2
http://radap.kpi.ua/radiotechnique/article/view/128
2024-03-29T06:42:49Z
N
No. 47 (2011); 118-128
Optimization criterial of model of the radio electronic device
Uvarov, B. M.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
Zinkovskiy, J. F.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
Authors who publish with this journal agree to the following terms:
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
url:http://radap.kpi.ua/radiotechnique/article/view/128
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The features of designing of radio electronic devices structural - optimized by method are considered. The basic functional - constructive characteristics of the device are submitted as system criterial of the equations, into which enter dimensionless individual, partial and complex criterion generated by methods of the theory of similarity. Structure of criteria includes physical sizes of the basic processes of transformation of energy and also design data of the device. During designing the optimization of model will ensure the best functional and constructive parameters of the radio electronic device.
oai:ojs.radap.kpi.ua:article/129
2024-03-29T06:42:49Z
radiotechnique:design
v2
http://radap.kpi.ua/radiotechnique/article/view/129
2024-03-29T06:42:49Z
N
No. 47 (2011); 129-136
Method of calculating of the changing activeinductive loading executor’s devices for the radio - electronics means
Smolyaninov, V. G.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
Sukhopara, A. N.; NPP OOO «MTI», Kyiv
Authors who publish with this journal agree to the following terms:
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
url:http://radap.kpi.ua/radiotechnique/article/view/129
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Effective functioning radio - electronics means (REM), comprising electromagnetic executive apparatus (ERA), the mechanisms and motors, enter in the complement of, at determination of their power and mechanical descriptions for providing of continuous office hours with maximal KPD, must be taken into account as a changing active-inductive loading of REM. The method of calculation of change inductance of magnetic chain of the excited section of ERA is presented, depending on the change of magnetic resistance a chain at moving of mobile link of ERA. Analytical expressions are got for the calculation of inductance and its first derivative at the changing active-inductive loading of REM, that takes into account the structural parameters of ERA, for comfort of calculations presented in a dimensionless kind. The approximating functions of change inductance and its first derivative are got for the active-inductive loading of REM, depending on moving of mobile link of ERA to the size of step of wearing-out.
oai:ojs.radap.kpi.ua:article/130
2024-03-29T06:42:49Z
radiotechnique:design
v2
http://radap.kpi.ua/radiotechnique/article/view/130
2024-03-29T06:42:49Z
N
No. 47 (2011); 137-141
Regulated four tact transistor inductance
Gavrasienko, P. O.; Vinnytsia National Technical University, Vinnitsa
Kychak, V. V.; Vinnytsia National Technical University, Vinnitsa
Ovcharuk, A. A.; Vinnytsia National Technical University, Vinnitsa
Authors who publish with this journal agree to the following terms:
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
url:http://radap.kpi.ua/radiotechnique/article/view/130
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Marketability function of inductance is considered as a four tact structure on the base of transistors of different polarity and its analysis is conducted. Application of such structure at symmetry of it shoulders substantially diminishes the level of the second accordion and nonlinear distortions and eliminates the necessity of the use of additional outsourcings of feed.The proposed inductor has high stability and can be widely applied in the design of electronic devices.
oai:ojs.radap.kpi.ua:article/131
2024-03-29T06:42:49Z
radiotechnique:microelectronics
v2
http://radap.kpi.ua/radiotechnique/article/view/131
2024-03-29T06:42:49Z
N
No. 47 (2011); 142-148
An assessment of the main CCD characteristics
Neuimin, O. S.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
Dyachenko, S. M.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
Authors who publish with this journal agree to the following terms:
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
url:http://radap.kpi.ua/radiotechnique/article/view/131
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The influence of nonuniformity of the CCD elements on the output signal and how to fix it are considered. Using computer software ImageJ technique of the dark frame subtraction is implemented, which provides positive results in improved image. A method of forming test pattern on the computer monitor for the experimental measurement of modulation transfer function of CCD is proposed. Provides practical and theoretical results MTF. An explanation of the obtained results are presented.
oai:ojs.radap.kpi.ua:article/132
2024-03-29T06:42:49Z
radiotechnique:biomedical-systems
v2
http://radap.kpi.ua/radiotechnique/article/view/132
2024-03-29T06:42:49Z
N
No. 47 (2011); 158-164
Research of a radiate ability of minerals is for the construction of microwave generators of the medical setting
Yanenko, A. F.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
Movchanyuk, A. V.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
Vinokurov, V. S.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
Authors who publish with this journal agree to the following terms:
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
url:http://radap.kpi.ua/radiotechnique/article/view/132
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At implementation of physical therapy procedures, advantage gets a simple and reliable medical apparatus. In a complete measure it belongs and to the apparatus for microwave therapy in the range of frequencies 37 – 78 GGc. At the same time the apparatus SHF of range differs complication of construction, high cost and insufficient reliability. To more simple and reliable devices of the medical setting it follows to take the thermal generators of SHF-range. One of basic lacks of similar medical generators there is small initial power. Authors are conduct experimental researches of materials of natural origin (minerals) for the working body of thermal generator, what would provide the increase of initial power these medical devices. The results of these researches is an exposure of materials in which a radiate ability in 4 times is greater from usually in-use – feroapoksidu.
oai:ojs.radap.kpi.ua:article/133
2024-03-29T06:42:49Z
radiotechnique:biomedical-systems
v2
http://radap.kpi.ua/radiotechnique/article/view/133
2024-03-29T06:42:49Z
N
No. 47 (2011); 165-175
Algorithm for solving the Electrical Impedance Tomography forward problem by the modification method
Sushko, I. O.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
Authors who publish with this journal agree to the following terms:
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
url:http://radap.kpi.ua/radiotechnique/article/view/133
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Algorithm for solving the Electrical Impedance Tomography forward problem by the modification method with “conductivity zones”, which are generated using square finite elements, is proposed. The number of zones is equal to the number of electrodes on the phantom outline (for example, 14 with 16 electrodes, two of which are intended for connection of the independence current source). The proposed algorithm economy, that is a consequence of internal zones nodes reduction, is shown The examples of continuos phantom discretization to conductivity zones, that consist of square finite elements are given. The examples of equal voltage lines distribution inside the phantom with different (in size, surface conductivity) inhomogeneities and with different number of those inhomogeneities are shown. These examples illustrate the possibilities of algorithm for solving the Electrical Impedance Tomography forward problem and also the inexpediency of back projection method using (in general case) for solving the inverse problem.
oai:ojs.radap.kpi.ua:article/134
2024-03-29T06:42:49Z
radiotechnique:Reviews
v2
http://radap.kpi.ua/radiotechnique/article/view/134
2024-03-29T06:42:49Z
N
No. 47 (2011); 176-189
Artificial neural networks in problems of material objects implementation. Part 1. Networking principles and Classification
Adamenko, V. O.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
Mirskikh, G. A.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
Authors who publish with this journal agree to the following terms:
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
url:http://radap.kpi.ua/radiotechnique/article/view/134
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The main historical development stages of artificial neural networks are presented. The mathematical model of artificial neurons and the basic elements of neural networks are considered. Typical activation functions are characterized with their advantages and disadvantages. One of possible problem solution of the neural networks classification is given according to different classification features. Expediency of neural networks using in problems of material objects implementation is substantiated. That will allow in the nearest future to bring engineering intuition and experience components in the calculations.
oai:ojs.radap.kpi.ua:article/135
2024-03-29T06:42:49Z
radiotechnique:Reviews
v2
http://radap.kpi.ua/radiotechnique/article/view/135
2024-03-29T06:42:49Z
N
No. 47 (2011); 190-198
Nanotechnology. Definitions and classification
Silakov, K. I.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
Silakova, T. T.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
2012-11-02
Authors who publish with this journal agree to the following terms:
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
url:http://radap.kpi.ua/radiotechnique/article/view/135
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A brief literature review to identify and classify areas of nanotechnology that are currently in the process of formation. It is noted that, a single coherent alternative that would form the basis for constructing classifications, does not exist yet. Identified seven key areas ofnanotechnology: nanomaterials, nanoelectronics, nanophotonics, nanobiotechnology, nanomedicine, nanoinstrumenty (nanodiagnostics), technologyand special equipment for the creation and production of nanomaterials and nanodevices
oai:ojs.radap.kpi.ua:article/138
2024-03-29T06:42:49Z
radiotechnique:Reviews
v2
http://radap.kpi.ua/radiotechnique/article/view/138
2024-03-29T06:42:49Z
N
No. 47 (2011); 199-211
Combined methods for determining the weighting coefficients in optimization problems and evaluate the quality of objects
Mirskikh, G. A.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
Reutskaya, Yu. Yu.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
Authors who publish with this journal agree to the following terms:
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
url:http://radap.kpi.ua/radiotechnique/article/view/138
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The generalized criterions of quality of object in indeterminacy conditions construction algorithms are considered. The computed and combined expert - applicable methods for determining the weighting coefficients in the problems of multi objective optimization and comprehensive evaluation of the quality of the material of objects are shown. These are the randomized generalized indicators method, the partial indicators of quality priority method, method for determining with Fishbern’s scheme and the minimization of the generalized indicator of quality deviation method. The efficiency of these methods for reduction of subjective factors influence at weight weighting coefficients definition is proved.
oai:ojs.radap.kpi.ua:article/139
2024-03-29T06:42:49Z
radiotechnique:computer_science
v2
http://radap.kpi.ua/radiotechnique/article/view/139
2024-03-29T06:42:49Z
N
No. 47 (2011); 149-157
Software-hardware complex studies of energy consumption of industrial enterprises
Bereziansky, B. M.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
Authors who publish with this journal agree to the following terms:
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
url:http://radap.kpi.ua/radiotechnique/article/view/139
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This paper examines the main principles and features hardware-software complex of electricity "PSD-Dnepr". The main purpose of the complex - reading a number of parameters the three-phase industrial power, the calculation values of active and reactive power of positive and negative for each phase, power factor and current on the neutral. According to calculated data and Schedules can draw conclusions about the energy consumption and saving an object, which is set "PSD-Dnepr". The results of experimental investigation of the complex is carried out on a small enterprise. Presented findings on the structure of the energy system of the enterprise.
oai:ojs.radap.kpi.ua:article/140
2024-03-29T06:42:49Z
radiotechnique:circuitry%26signals
v2
http://radap.kpi.ua/radiotechnique/article/view/140
2024-03-29T06:42:49Z
N
No. 48 (2012); 56-60
Analysis of spectral and correlation characteristics of sounding signal with the triangular frequency intra-modulation
Mrachkovskiy, O. D.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
Reutskaya, Yu. Yu.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
Solovyov, V. S.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
Authors who publish with this journal agree to the following terms:
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
url:http://radap.kpi.ua/radiotechnique/article/view/140
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A signal with a symmetric linear frequency modulation and its properties are considered, analytic form of signal and its spectrum are shown, figures of amplitude and phase spectra of signal are drawn, figures of ambiguity diagram, cross-correlation functions and iso-response ambiguity function in strong and weak fields are shown. Considered properties of section of crosscorrelation function to two peaks and effect of these properties. Advantages and disadvantages of the signal, its application field are outlined.
oai:ojs.radap.kpi.ua:article/141
2024-03-29T06:42:49Z
radiotechnique:telecommunications
v2
http://radap.kpi.ua/radiotechnique/article/view/141
2024-03-29T06:42:49Z
N
No. 48 (2012); 61-65
Criteria as a route to the routing algorithm in mesh networks with reduced interference
Pravda, V. I.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
Gren, M. O.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
Authors who publish with this journal agree to the following terms:
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
url:http://radap.kpi.ua/radiotechnique/article/view/141
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The paper presents the development assessment system tracks peredichi information in the mesh network and routing algorithm that uses data evaluation. Using this algorithm reduces the interference in the network and power consumption. Provides resistance to changes in the network.
oai:ojs.radap.kpi.ua:article/145
2024-03-29T06:42:49Z
radiotechnique:radio-navigation
v2
http://radap.kpi.ua/radiotechnique/article/view/145
2024-03-29T06:42:49Z
N
No. 48 (2012); 66-74
Divergence elimination of the extended Kalman filter for target tracking due to Pulse-Doppler radar measurements
Neuimin, O. S.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
Zhuk, S. Ya.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
Authors who publish with this journal agree to the following terms:
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
url:http://radap.kpi.ua/radiotechnique/article/view/145
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Extended Kalman filter for target tracking due to Pulse-Doppler radar measurements is often divergent, which is caused by the presence of unaccounted errors which appear in the result of the equation of the range rate measurement linearization. In the article a simple way of the extended Kalman filter divergence elimination is suggested and consists in the variance of value measurement error increase by an amount proportional to the value extrapolation error variance. The coefficient of proportionality is determined by means of statistical modeling by testing the statistical hypothesis of Gaussian distribution of the errors of estimation of the target’s parameters vector. The suggested method analysis is carried out as an example of target tracking due to Pulse-Doppler radar measurements in the Cartesian coordinates using the statistical modeling.
oai:ojs.radap.kpi.ua:article/146
2024-03-29T06:42:49Z
radiotechnique:radio-navigation
v2
http://radap.kpi.ua/radiotechnique/article/view/146
2024-03-29T06:42:49Z
N
No. 48 (2012); 75-83
Direct digital method of the correlation-interferometric radio direction-finding with reconstructing of spatial analytical signal
Tsyporenko, V. V.; Zhytomyr State Technological University, Zhytomyr
Authors who publish with this journal agree to the following terms:
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
url:http://radap.kpi.ua/radiotechnique/article/view/146
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In this paper, a new direct digital method of the correlation-interferometric radio direction-finding with reconstructing of spatial analytical signal is designed. Proposed method due to the previous parallel spatial selection of radiations separately on every their time spectral constituent and subsequent reconstructing of spatial analytical harmonic signals with the purpose of direct exact estimation of values of spatial frequencies of signals, and also use of direct dispersion-correlation processing of arrays of values of determined spatial frequencies of the reconstructed harmonic spatial analytical signals, which correspond to one direction, carries out in the real-time realization the direct estimation of directions on all radiation sources, which got in the band of frequencies of parallel analysis of radio direction finder. Thus the spectrums of signals can fully recovered on frequency.
oai:ojs.radap.kpi.ua:article/147
2024-03-29T06:42:49Z
radiotechnique:radio-navigation
v2
http://radap.kpi.ua/radiotechnique/article/view/147
2024-03-29T06:42:49Z
N
No. 48 (2012); 84-96
Features of the system of preliminary nonlinear probing in nonlinear radar
Zinchenko, M. V.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
Zinkovskiy, J. F.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
Authors who publish with this journal agree to the following terms:
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
url:http://radap.kpi.ua/radiotechnique/article/view/147
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The work is devoted to actual problem of estimation of the impact of density the obstructing nonlinear scatterers (NS) based on the structures "metaloxide-metal" in the nonlinear radar space on the efficiency of usage particular devise in nonlinear radar. The features of density estimation of the obstructing NS by specialized system of preliminary nonlinear probing (SPNP) are observed. The expediency of usage an additive mixture of the second component of phase-modulated (FM) signal and the "white" Gaussian noise as a probe signal for SPNP is shown. It is proved that the noise, which was re-emitted by obstructing NS, loses the characteristic of "white" noise, i.e. its spectrum becomes not uniform, but decreasing with frequency increasing. The "skirts" are appeared around the first, third and fifth harmonics of the re-emitted signal as a result of nonlinear interaction of initial components of signal and noise. If the component of the FM signal and the "white" Gaussian noise during the direct action on the obstructing NS are statistically independent, and therefore they are not correlated, then after re-emission by obstructing NS they becomes statistically dependent, and therefore they are mutually correlated, because the part of the energy of input signal transformed into a noise energy. It is also pointed out that the expression of these features of transforming the probing signal by obstructing NS SPNP allows to estimate the density of the obstructing nonlinear scatterers in the nonlinear radar space which is under study of nonlinear radars.
oai:ojs.radap.kpi.ua:article/148
2024-03-29T06:42:50Z
radiotechnique:radio-metering
v2
http://radap.kpi.ua/radiotechnique/article/view/148
2024-03-29T06:42:50Z
N
No. 48 (2012); 97-106
Theoretical analysis of possibility of electromagnetic wave phase front curvature physical phenomenon application in stationary microwave radio systems
Yakornov, Ye. A.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
Kolomytsev, M. A; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
Avdieienko, H. L.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
Lavrinenko, O. Y.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
Authors who publish with this journal agree to the following terms:
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
url:http://radap.kpi.ua/radiotechnique/article/view/148
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The results of mathematical modelling of electromagnetic wave amplitude and phase distributions on receive array aperture are shown. From its analysis evidently that electromagnetic wave phase front curvature theoretically can be applied for two source of radiation discrimination in stationary microwave radiolinks. This gives possibility for reusing radiowave spectrum.
oai:ojs.radap.kpi.ua:article/149
2024-03-29T06:42:50Z
radiotechnique:radio-metering
v2
http://radap.kpi.ua/radiotechnique/article/view/149
2024-03-29T06:42:50Z
N
No. 48 (2012); 107-116
Radio-technical characteristics of plasma and metal antennas mounted on aircrafts and spacecrafts
Ovsyanikov, V. V.; Dnipropetrovsk National University of O. Gonchar, Dnipropetrovsk
Moroz, S. N.; National Mining University, Dnipropetrovsk
Authors who publish with this journal agree to the following terms:
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
url:http://radap.kpi.ua/radiotechnique/article/view/149
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RT characteristics of plasma and metal antennas (VSWR, RP, gain, efficiency) installed on aircrafts and spacecrafts and their fragments in the software environment EMSS FEKO are investigated. It became possible to carry out higher-level 3D modeling of complex radiating structures. Comparative characteristics of the antennas, made of metal and gas-discharge cold plasma are shown. For the first time detected dual-band properties of plasma antennas mounted on a conical fragment of the aircraft. The influence of mercury vapor, usually introduced into the plasma antennas to facilitate the creation of a gas discharge, which to varying degrees modify the conductivity of the medium of the plasma antenna is investigated. As a result of the calculations elucidate the degree of influence configuration and size of mobile objects to internal and external parameters of the plasma and metal antennas in some of the most important microwave bands. Confirmed that the plasma antenna, mounted on mobile objects of complex configuration have a two to three times wider frequency range for VSWR and RP, compared to metal antennas.
oai:ojs.radap.kpi.ua:article/150
2024-03-29T06:42:50Z
radiotechnique:design
v2
http://radap.kpi.ua/radiotechnique/article/view/150
2024-03-29T06:42:50Z
N
No. 48 (2012); 117-125
Evaluation of efficiency of the fault-tolerant systems with reconfiguration of the core of majority structure
Volochiy, B. Y.; Lviv Polytechnic National University, Lviv
Ozirkovskyy, L. D.; Lviv Polytechnic National University, Lviv
Zmysnyi, M. M.; Lviv Polytechnic National University, Lviv
Authors who publish with this journal agree to the following terms:
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
url:http://radap.kpi.ua/radiotechnique/article/view/150
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Models of fault-tolerant system with a combined structural redundancy, which includes the majority structure with N- th number of technical systems in the core and their sliding redundancy are presented. Exploitation of system does not provide for maintenance and therefore the using procedures of reconfiguration of the core of majority structure are examined. Using the developed models compare the reliability of fault-tolerant system with reconfiguration of the core and without reconfiguration are carried out. The dependence of the reliability of fault-tolerant system under two conditions run procedure of reconfiguration are investigated. The expedient reliability of the majority element are showed.
oai:ojs.radap.kpi.ua:article/151
2024-03-29T06:42:50Z
radiotechnique:design
v2
http://radap.kpi.ua/radiotechnique/article/view/151
2024-03-29T06:42:50Z
N
No. 48 (2012); 126-133
Indemnification of nonlinear loopback inertial properties for emergency braking system of mining hoists
Vasiliev, V. I.; Konotopskiy Institute of the Sumy state University, Konotop
Authors who publish with this journal agree to the following terms:
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
url:http://radap.kpi.ua/radiotechnique/article/view/151
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In the article the experience of designing and researches of an electromechanical system with the nonlinear loopback inertial properties is stated. The characteristics of an electromechanical converter are obtained experimentally. The computer simulation of an electromechanical system is investigated. A subsystem, is part in a common system of mine hoist. It is intended for designing of an equipment for automatically adjustable emergency braking of mining hoists.
oai:ojs.radap.kpi.ua:article/152
2024-03-29T06:42:50Z
radiotechnique:design
v2
http://radap.kpi.ua/radiotechnique/article/view/152
2024-03-29T06:42:50Z
N
No. 48 (2012); 134-139
Direct digital synthesis (dds) in control systems ultrasonic resonance actuators
Fesich, V. P.; National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
Authors who publish with this journal agree to the following terms:
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
url:http://radap.kpi.ua/radiotechnique/article/view/152
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The principles of construction management schemes ultrasonic resonant actuators using direct digital synthesis (DDS) and the use of pulse width modulated signal in the output power stage, with the use of modern microprocessor components. The advantages of such schemes on the efficiency and adaptability, opportunities for integration into modern computerized automatic control system over conventional management schemes ultrasonic resonant actuators. Identified areas for further development of control systems of ultrasonic resonance drives with digital circuits.
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