A 1.2 V reactive-feedback 3.1-10.6 GHz ultrawideband low-noise amplifier in 0.13 /spl mu/m CMOS

A 15.1 dB gain, 2.1 dB noise figure (min.), low-noise amplifier (LNA) fabricated in 0.13 mum CMOS covers the entire 3.1-10.6 GHz ultrawideband (UWB). Noise figure variation across this band is limited to plusmn0.43 dB. Reactive feedback reduces the noise figure, stabilizes the gain, and sets the terminal impedances over the prescribed bandwidth. Bias current re-use limits power consumption of the 0.87mm² IC to 9 mW from a 1.2 V supply

I. Introduction

Ultra-Wideband (UWB) wireless communication as recently approved by the FCC in the US from 3.1–10.6GHz is enabling high data-rate, short-range and seamless connectivity. Such products are ideally manufactured in a low-cost technology such as deep-submicron silicon CMOS.