Multi-stage low-noise amplifier with LC-tank load for ultra-wideband wireless receiver

Abstract

A multi-stage low-noise amplifier (LNA) with LC-tank load to extend the bandwidth is designed for ultra-wideband (UWB) wireless receiver. The design consists of three LC-tank cascode amplifier and one output buffer and is implemented in 0.18um RF CMOS process. The LNA gives 14.5dB gain and 7.2GHz 3dB bandwidth (3.1 - 10.3GHz) while consuming 22.8mW through a 1.5V supply. Over the 3.1GHz - 10.3GHz frequency band, a minimum noise figure of 2.6dB and input return loss lower than -8.8dB have been achieved.