A 1.6 mW 5.4 GHz Transformer-Feedback gm-Boosted Current-Reuse LNA in 0.18μm CMOS

A fully-integrated LNA in 0.18 mu m CMOS simultaneously achieves high gain, low noise figure (NF), good third-order input intercept linearity (IIP3), and low DC bias current consumption: 19 dB, 2.4 dB, -14.2 dBm and 1.3 mA, respectively, from a 1.2 V supply. The single-ended LNA uses a commongate common-source (CG-CS) topology and operates at 5.4 GHz for WLAN applications. Using g(m)-boosting, current-reuse and transformer-feedback techniques, the LNA mitigates several design issues seen in the widely used common-source commonsource current-reuse (CS-CS) LNAs and improves the IIP3 of CG-CS schemes by 6 dB, without increasing power and area consumption.