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A wideband low noise amplifiers design incorporating the CMRC circuitry

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3 Author(s)
Yang, S.-lS. ; Dept. of Electron. Eng., City Univ. of Hong Kong, China ; Quan Xue ; Luk, Kwai-Man

An impedance bandwidth enhancement technique for tuning a low noise amplifier (LNA) is presented. With the use of the compact microstrip resonant cell (CMRC) at the emitter pins of a bipolar junction transistor (BJT), the impedance bandwidth achieved is about 95%, for a simple single stage amplifier design. The LNA attains a gain of about 15 dB; also a low noise figure of 1.16 dB at 2.1GHz and an average noise figure of about 1.5 dB across the operation bands have been achieved.

Published in:

Microwave and Wireless Components Letters, IEEE  (Volume:15 ,  Issue: 5 )