A low power feedback LNA for UWB using current bleeding technique

In this paper, a low power, area efficient Low Noise Amplifier (LNA) targeting at the lower band of the Ultra Wideband spectrum is presented in 0.13 mum CMOS process. The LNA uses a feedback technique based on a source follower and current bleeding, aiming to provide adequate current at the amplifying transistor without causing large voltage drop across the load resistance. A novel approach combining an inductor in series with the current source and inductive shunt peaking at the load is used to increase the operation bandwidth and gain flatness. The results show a flat gain between 9 and 10.5 dB and an average Noise Figure (NF) of 2.8 dB across a 3 dB bandwidth from 0.5 to 7 GHz while the core is consuming 11.5 mW of power.