A CMOS Low-Noise Amplifier for Ultra Wideband Wireless Applications

Mei-Fen CHOU
Wen-Shen WUEN
Chang-Ching WU
Kuei-Ann WEN
Chun-Yen CHANG

IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences   Vol.E88-A    No.11    pp.3110-3117
Publication Date: 2005/11/01
Online ISSN: 
DOI: 10.1093/ietfec/e88-a.11.3110
Print ISSN: 0916-8508
Type of Manuscript: Special Section PAPER (Special Section on Wide Band Systems)
low noise amplifier,  ultra-wideband,  stagger tuning technique,  low power,  

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A CMOS low noise amplifier (LNA) for low-power ultra-wideband (UWB) wireless applications is presented. To achieve low power consumption and wide operating bandwidth, the proposed LNA employing stagger tuning technique consists of two stacked common-source stages with different resonant frequencies. This work is implemented in 0.18-µm CMOS process and shows a 2.4-9.4-GHz bandwidth. The amplifier provides a maximum forward gain (S21) of 10.9 dB while drawing 7.1 mW from a 1.8-V supply. A noise figure as low as 4.1 dB and an IIP3 of -3.5 dBm have been demonstrated.