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

作者：Huang Xingli^*; Qin Xi; Qin Yajie; Fang Hao; Hong Zhiliang

来源：2011 IEEE 9th International Conference on ASIC, ASICON 2011, 2011-10-25 to 2011-10-28.

DOI：10.1109/ASICON.2011.6157383

• Active area
• CMOS technology
• Dual-loop feedback
• Dynamic gains
• Dynamic range
• Measurement results
• Power supply
• Variable gain amplifiers
• Wide-band

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 2active 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 P1dBwith a preceding LNA is -27dBm at an overall gain of -0.5dB.

• 出版日期2011
• 单位复旦大学