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 it...

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Bibliographic Details
Published in:Vìsnik Nacìonalʹnogo Tehnìčnogo Unìversitetu Ukraïni Kììvsʹkij Polìtehnìčnij Ìnstitut: Serìâ Radìotehnìka, Radìoaparatobuduvannâ
Main Authors: E. M. Savchenko, A. S. Budiakov, P. S. Budiakov, N. N. Prokopenko
Format: Article
Language:English
Published: Igor Sikorsky Kyiv Polytechnic Institute 2017-06-01
Subjects:
variable-gain amplifier
"folded" casсode
operational amplifier
SiGe BiCMOS technology
R-2R matrix
cancellation
Online Access:http://doi.radap.kpi.ua/article/view/221600
Description
Summary: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.
ISSN:2310-0397
2310-0389

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