A high-gain differential CMOS LNA for 3.1-10.6 GHz ultra-wideband receivers

作者：Zhang, Hong^*; Chen, Gui-Can; Lai, Su-Ming; Liu, Jin-Hua

来源：IEICE Electronics Express, 2008, 5(15): 523-529.

DOI：10.1587/elex.5.523

• low noise amplifier
• capacitive cross-coupling common-gate
• common-source
• ultra-wideband

This paper presents a high-gain differential CMOS low noise amplifier (LNA) for 3.1-10.6 GHz ultra-wideband receivers. A novel structure that combines capacitive cross-coupling common-gate topology with common-source topology is proposed, which increases the power gain greatly and imposes little impact on other performances of the LNA. The LNA is designed in the TSMC 0.18 mu m CMOS technology. Post-layout simulation results show that the LNA achieves a power gain of 14.9 similar to 16 dB and a noise figure of 3.5 similar to 4.9 dB with a current consumption of 6.3 mA from a 1.8 V power supply. The layout area is 0.7 x 0.9 mm(2).

• 出版日期2008-8-10
• 单位西安交通大学