A Design of 77 GHz LNA Using 65 nm CMOS Process

Abstract

This work presents a 77 GHz low noise amplifier(LNA) for automotive radar systems using 65 nm RF CMOS process. The LNA is composed of three stage common source amplifiers and includes transmission line matching networks. To reduce the time for three dimensional EM simulation, we optimize the transmission line impedance matching network using a pre-built EM library. The proposed compact simulation technique is confirmed by measurement results.The peak gain of the LNA is 10 dB at 77 GHz and input/output return losses are below -10 dB around the design frequency.Key words : 77 GHz, Low Noise Amplifier, EM Simulation, Automotive Radar .