Analysis of Three-Stage LNA Architecture for CMOS RF Front End

Abstract

Wireless communication continues to lead the world. The term “wireless” significantly influences everything from telephone to satellite communication. Recent years have seen the need for appropriately built Low Noise Amplifiers (LNAs) in receiver front end because of the modem wireless communication in broadcast and microwave radio. In this paper a high performance LNA for the radio frequency range is presented. To achieve high gain a three stage LNA with each stage as Cascode stage is considered here. The simulation shows that the presented LNA has a gain of 26.12 dB and a Noise Figure (NF) of 2.6 dB. The achieved output and input returns losses are -8.4 dB and -11.6 dB respectively.