Abstract
In this paper, a CMOS low-noise amplifier (LNA) is designed for ultra-wideband (UWB) wireless receiver system. The design consists of a wideband input impedance matching network, two stage cascode amplifiers with shunt-peaking load and an output buffer for measurement purpose. It was fabricated in UMC 0.18 mum standard RF CMOS process. The LNA provides 14.1 dB maximum power gain between 2.3G Hz-8.0 GH while consuming 18.6 mW (including buffer) through a 1.8 V supply. Over the 3.1 GHz-8.0 GHz frequency band, a minimum noise figure is 2.0 dB. The input return loss is lower than -7.1 dB in the entire bandwidth has also been achieved.
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