Design and implementation of LNA with high gain and low power consumption for UWB system

Authors:
Yu-Lin Wang;Man-Long Her;Hsin-Hung Lin
Affiliations:
Electrical and Communications Engineering, Feng-Chia University, Taichung, Taiwan, China;Department of Communications Engineering, Feng-Chia University, Taichung, Taiwan, China;Department of Communications Engineering, Feng-Chia University, Taichung, Taiwan, China
Venue:
APCC'09 Proceedings of the 15th Asia-Pacific conference on Communications
Year:
2009

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RF microelectronics

RF microelectronics

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Abstract

The aim of this paper to probe into the low power voltage amplifier which can achieve the high gain and fine flatness. The high gain Low Noise Amplifier (LNA) was designed for an Ultra Wide-Band (UWB) application. This CMOS LNA with three cascade circuits can enhance the gain and bandwidth, middle inductor can supprcss the miller effect, and used the RC feedback network to maintain the flatness. Input matching stage adopts an improved Chebyshev filter to achieve the input return loss and the source follower applied to the output matching. The UWB LNA exhibits the maximum gain S21is 17.74 dB. The power consumption is 13.08 mW at VDD=1 V.