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A low power variable gain amplifier with 50-dB dynamic range

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6 Author(s)
Pilong Gao ; Inst. of RF- & OE-ICs, Southeast Univ., Nanjing, China ; Zhigong Wang ; Jian Xu ; Weibing Li
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This paper presents a new structure of variable gain amplifier (VGA) in which a modified Gilbert Cell is firstly proposed to implement a low power wide dynamic range VGA. The proposed VGA can provide 50-dB dynamic range within a linear error of 1-dB. Furthermore, the proposed circuit consumes less than 0.5-mA current and occupies about only 0.12-mm2 chip area, both of which are relatively low in terms of the wide dynamic range provided by it.

Published in:

Microwave Workshop Series on Millimeter Wave Wireless Technology and Applications (IMWS), 2012 IEEE MTT-S International

Date of Conference:

18-20 Sept. 2012