Enhanced C-band Coaxial Orthomode Transducer

Authors

DOI:

https://doi.org/10.20535/RADAP.2014.57.35-42

Keywords:

orthomode transducer, C-band, wideband dual-polarized antennas, coaxial ridged waveguides, turnstile junction, antiphase power combiner/divider, right-angle coaxial junction

Abstract

Introduction. In this paper a novel configuration of wideband coherent coaxial OMT is presented.
General Design of an Orthomode Transducer. The OMT consists of elements of 3 main types: a turnstile junction between coaxial quad-ridged waveguide and 4 coaxial transmission lines; 4 right-angle coaxial junctions for each polarization; 2 antiphase power combiners/dividers.
A Turnstile Junction Optimization. The optimization of a turnstile junction has been performed. Its minimized reflection coefficient is less than −28 dB in the operation frequency band 3.4–5.4 GHz.
An Optimized Right-Angle Coaxial Junction. A right-angle coaxial junction has been optimized to provide reflection coefficient, which is less than −42 dB in the operation frequency band 3.4–5.4 GHz.
An Antiphase Power Combiner/Divider. The optimization of an antiphase power com-biner/divider has been performed. Its minimized reflection coefficient is less than −38 dB.
Conclusions. A wideband coaxial orthomode transducer has been developed for the operation frequency band 3.4–5.4 GHz. In this frequency band the reflection coefficient is less than −27 dB.

Author Biography

S. I. Piltyay, National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev

M.S., Postgraduate students

References

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Published

2014-06-30

How to Cite

Piltyay, S. I. (2014) “Enhanced C-band Coaxial Orthomode Transducer”, Visnyk NTUU KPI Seriia - Radiotekhnika Radioaparatobuduvannia, 0(57), pp. 35-42. doi: 10.20535/RADAP.2014.57.35-42.

Issue

No. 57 (2014)

Section

Electrodynamics. Microwave devices. Antennas

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