A 36 GHz Low Power LNA Using Gm-Boosting Technique

Abstract

This paper presents Gm boosted CG-CS low power, high gain LNA for 5G applications. The LNA is cascaded with a CG cascoded stage and CS cascoded stage. In the first stage, a transformer-based gm boosting technique has been used along with series peaking. The second stage is used for increasing the gain in total. The $65 \mathrm{~nm}$ CMOS process is used for simulations. The LNA simulations show a gain of $22 \mathrm{~dB}$ and a noise Figure of $3.5 \mathrm{~dB}$ with a $-3 \mathrm{~dB}$ bandwidth of 6.7 GHz. The minimum NF obtained is $3.4 \mathrm{~dB}$ at 38 GHz and is below $4 \mathrm{~dB}$ from 33 GHz to 41 GHz. The proposed LNA consumes only $3.5 \mathrm{~mW}$ from a 1-V supply.