A low-power CMOS LNA for ultra-wideband wireless receivers

Abstract

In this paper, a low-power ultra-wideband (UWB) low-noise amplifier (LNA) is proposed. Here, we propose a structure to combine the common gate with band pass filters, which can reduce parasitic capacitance of the transistor and to achieve input wideband matching. The pi-section LC network technique is employed in the LNA to achieve sufficient. at gain. A bias resistor of large value is placed between the source and the body nodes to prevent body effect and reduce noise. Numerical simulation based on TSMC 0.18 mu m 1P6M process. It achieved 10.0 similar to 12.4 dB gain from 3 GHz to 10.6 GHz and 3.25 dB noise figure in 8.5 GHz, operates from 1.5 V power supply, and dissipates 3 mW without the output buffer.