A 0.7 V 3-5 GHz CMOS Low Noise Amplifier for Ultra-Wideband Applications

Chih-Lung HSIAO  Ro-Min WENG  Wei-Chi LEE  

IEICE TRANSACTIONS on Electronics   Vol.E90-C   No.9   pp.1715-1720
Publication Date: 2007/09/01
Online ISSN: 1745-1353
DOI: 10.1093/ietele/e90-c.9.1715
Print ISSN: 0916-8516
Type of Manuscript: Special Section PAPER (Special Section on Microwave and Millimeter-Wave Technology)
Category: Active Devices/Circuits
LNA,  UWB,  low voltage,  

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A low voltage 3-5 GHz CMOS ultra-wideband low noise amplifier is presented in this paper. A second order bandpass input impedance matching technique is used to achieve the broadband input matching. A folded cascode structure is employed to reduce the supply voltage and power consumption. A source follower acts as the buffer stage for broadband output impedance matching. The supply voltage is only 0.7 V. The operation frequency is 3-5 GHz. The maximum power gain is 13.2 dB. The noise figure is 3-4.2 dB. The power consumption of the core circuit is only 6.3 mW.