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A 2.4/3.5/4.9/5.2/5.7-GHz concurrent multiband low noise amplifier using InGaP/GaAs HBT technology

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2 Author(s)
Yu-Tso Lin ; Dept. of Electr. Eng., Nat. Taiwan Univ., Taipei, Taiwan ; Shey-Shi Lu

A 2.4/3.5/4.9/5.2/5.7-GHz concurrent multiband low noise amplifier using InGaP/GaAs HBT technology is demonstrated for the first time. Multiband input matching is achieved by newly developed capacitive feedback instead of traditional inductive feedback technique. The experimental results showed that input return loss of -12, -16, -14, -13, and -12 dB, voltage gain of 29, 27, 24, 23.6, and 22.5 dB and noise figure of 2.89, 2.76, 2.95, 2.98, and 3.1 dB were obtained at 2.4/3.5/4.9/5.2/5.7 GHz, respectively.

Published in:

Microwave and Wireless Components Letters, IEEE  (Volume:14 ,  Issue: 10 )

Date of Publication:

Oct. 2004

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