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http://dx.doi.org/10.5515/KJKIEES.2009.20.9.900

A Gain and NF Dynamic Controllable Wideband Low Noise Amplifier  

Oh, Tae-Soo (School of Information and Communication Engineering, Sungkyunkwan University)
Kim, Seong-Kyun (School of Information and Communication Engineering, Sungkyunkwan University)
Huang, Guo-Chi (Electronics, Communications and Information Technology Institute, Queen's University of Belfast)
Kim, Byung-Sung (School of Information and Communication Engineering, Sungkyunkwan University)
Publication Information
The Journal of Korean Institute of Electromagnetic Engineering and Science / v.20, no.9, 2009 , pp. 900-905 More about this Journal
Abstract
A common drain feedback CMOS wideband LNA with current bleeding and input inductive series-peaking techniques is presented in this paper. DC coupling is adopted between cascode and feedback amplifiers, so that the gain and NF of the LNA can be dynamically controlled by adjusting the bleeding current. The fabricated LNA shows the bandwidth of 2.5 GHz. The high gain mode shows 17.5 dB gain with $1.7{\sim}2.8\;dB$ NF and consumes 27 mW power and the low gain mode has 14 dB gain with $2.7{\sim}4.0\;dB$ NF and dissipates 1.8 mW from 1.8 V supply.
Keywords
Common Drain Feedback; Current Bleeding; Dynamic Control; Inductive Peaking; Low Noise Amplifier;
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