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|Title:||A 2-6.5 GHz CMOS variable gain amplifier for vector-sum phase shifters|
|Keywords:||CMOS wideband variable gain amplifier|
vector-sum phase shifters
|Source:||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. https://doi.org/10.1109/APMC.2012.6421509|
|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|
|Appears in Collections:||Staff Publications|
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