Journal of Beijing University of Posts and Telecommunications

  • EI核心期刊

JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM ›› 2015, Vol. 38 ›› Issue (2): 108-112.doi: 10.13190/j.jbupt.2015.02.020

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A 3 GHz-5 GHz Low Noise Amplifier for Ultra-Wideband Receiver System

LI Xiu-ping, CAO Jia-yun, LI Nan   

  1. School of Electronic Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, China
  • Received:2014-07-01 Online:2015-04-28 Published:2015-05-14

Abstract:

A 3-5 GHz ultra-wideband (UWB) low noise amplifier based on common source (CS) with inductive-source and quarter-wave impedance convertor was proposed. The quarter-wavelength impedance convertor provides wideband input matching without noise figure (NF) degradation. The proposed UWB low noise amplifier was verified and implemented with packaged GaAs PHEMT device for 3.1-5 GHz UWB system. The measurement demonstrates a 12±1.5 dB in-band gain, a minimum NF of 1.8 dB. Good input and output matching are obtained.

Key words: common source, input matching, low noise amplifier, noise figure

CLC Number: