Design of UWB LNA using active resistors in 0.18µm CMOS technology

Abstract

The proposed design of LNA uses common gate topology as an amplifying section. Noise cancelling technique is used and special emphasis is laid on the use of active resistors so that overall Noise figure is minimized and gain is enhanced. Simulation is done on ADS tool using 0.18μm technology. Power supply provided is 1.8V. Maximum gain achieved is 14.774dB. Noise figure achieved is 1dB to 1.6 dB over entire bandwidth. Bandwidth achieved is 3-9GHz.