A power reduction technique for wideband common gate low noise amplifers

In this paper, a power reduction technique for wideband common gate low noise amplifiers (LNA) is proposed for low power application. Stacked current reused complementary capacitive cross coupling (CCCC) concept is proposed to improve LNA power efficiency. As a proof of the concept, the improved broadband differential common-gate LNAs (CG-LNA) designed in 0.18μm CMOS technology. The LNA achieves a 21.2dB peak voltage gain over 3dB bandwidth from 53MHz - 3.3GHz, 2.95dB minimum noise figure (NF) and -2.2dBm IIP3. The current consumption of the LNA core from 1.8V supply is 368uA.