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Title: A 2-6.5 GHz CMOS variable gain amplifier for vector-sum phase shifters
Authors: Zijie, H.
Mouthaan, K. 
Keywords: CMOS wideband variable gain amplifier
vector-sum phase shifters
Issue Date: 2012
Citation: Zijie, H.,Mouthaan, K. (2012). A 2-6.5 GHz CMOS variable gain amplifier for vector-sum phase shifters. Asia-Pacific Microwave Conference Proceedings, APMC : 94-96. ScholarBank@NUS Repository.
Abstract: A wideband CMOS variable gain amplifier (VGA) for application in vector-sum phase shifters is presented. The VGA exhibits a continous, linear-in-magnitude gain control curve by using a programmable transconductance multiplier. Wideband input matching is achieved by employing the common-gate configuration at the input stage. To improve the gain flatness and the output matching, a modified three-stage Cherry-Hooper amplifier with inductive peaking is proposed. Using a standard 0.13-μm CMOS process, the measured 3-dB bandwidth is from 2 to 6.5 GHz with a linear-in-magnitude gain tuning range of 14 dB, and transmission phase error less than 4°. Operating at 1.2 V, the chip consumes 6 mW and occupies 0.6 mm2 including test pads. © 2012 IEEE.
Source Title: Asia-Pacific Microwave Conference Proceedings, APMC
ISBN: 9781457713309
DOI: 10.1109/APMC.2012.6421509
Appears in Collections:Staff Publications

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