A 0.8-3GHz 40dB dynamic range CMOS variable-gain amplifier

A wideband variable gain amplifier which provides 40dB dynamic gain range using dual-loop feedback Cherry-Hooper topology is presented. A modified negative capacitive neutralization technique is proposed to improve the frequency response with a reasonable cost of power consumption. This VGA is imple...

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Bibliographic Details
Published in2011 9th IEEE International Conference on ASIC pp. 1030 - 1033
Main Authors Xingli Huang, Xi Qin, Yajie Qin, Hao Fang, Zhiliang Hong
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.10.2011
Subjects
Gain measurement
Wireless communication
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Summary:A wideband variable gain amplifier which provides 40dB dynamic gain range using dual-loop feedback Cherry-Hooper topology is presented. A modified negative capacitive neutralization technique is proposed to improve the frequency response with a reasonable cost of power consumption. This VGA is implemented in SMIC 0.13μm 1P8M CMOS technology, and occupies 0.3 mm 2 active area. The measurement results show that its -3dB bandwidth is from 800MHz to 3GHz. It consumes 21.6 mW at 1.2V power supply. The maximum input P 1dB with a preceding LNA is -27dBm at an overall gain of -0.5dB.
ISBN:9781612841922
1612841929
ISSN:2162-7541
2162-755X
DOI:10.1109/ASICON.2011.6157383