A full-band UWB common-gate band-pass noise matched g m -boosted series peaked CMOS differential LNA

Abstract

This paper presents a low-power noise-matched fully-differential common-gate (CG) low noise amplifier (LNA) for ultrawideband receiver operating in the full 3.1---10.6 GHz band. Performance was optimized by employing the transconductance `g m ' boosted CG LNA topology with series peaking along with an input noise matching network. A common source g m -boosting amplifier, in conjunction with an LC T-network, was used to share the bias current with the CG stage. The LNA was demonstrated using a 130 nm IBM CMOS process technology and it consumed 7 mW from a 1 V supply. It exhibited an input return loss (S11) and an output return loss (S22) of ?10.5 and ?14 dB respectively. In addition, it also achieved a forward power gain (S21) of 14.5 dB and a noise figure between 4.5 and 5.0 dB.