The Method of Bandwidth Extension of SiGe BiCMOS Microwave Variable-Gain Amplifier Integrated Circuit


The article proposes a method of bandwidth extension of the analog integrated circuit of the variable-gain amplifier (VGA) based on SiGe BiCMOS technology with the rules of 0.18 µm. The designed VGA has a linear (in dB) control characteristic. The authors consider the VGA architecture and present its design outputs. They describe the properties of two modifications of the VGA integrated circuit – with classical correction of the response and with the circuit of the parasitic capacitance cancellation in the high-impedance node. The article shows that the second circuit solution allows increasing the upper frequency limit of the VGA by a factor of 1.8-2.

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GOST 7.1:2006 Harvard
Savchenko, E. M. The Method of Bandwidth Extension of SiGe BiCMOS Microwave Variable-Gain Amplifier Integrated Circuit / Savchenko, E. M., Budiakov, A. S., Budiakov, P. S., Prokopenko, N. N. // Visn. NTUU KPI, Ser. Radioteh. radioaparatobuduv. – 2017. – № 69. – с. 5-10. Savchenko, E. M., Budiakov, A. S., Budiakov, P. S., Prokopenko, N. N. (2017) The Method of Bandwidth Extension of SiGe BiCMOS Microwave Variable-Gain Amplifier Integrated Circuit. Visn. NTUU KPI, Ser. Radioteh. radioaparatobuduv., no. 69, pp. 5-10.

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