北京邮电大学学报

  • EI核心期刊

北京邮电大学学报 ›› 2015, Vol. 38 ›› Issue (2): 108-112.doi: 10.13190/j.jbupt.2015.02.020

• 研究报告 • 上一篇    下一篇

一款用于超宽带接收系统的3 GHz-5 GHz低噪声放大器

李秀萍, 曹佳云, 李南   

  1. 北京邮电大学 电子工程学院, 北京 100876
  • 收稿日期:2014-07-01 出版日期:2015-04-28 发布日期:2015-05-14
  • 作者简介:李秀萍(1974—), 女, 教授, 博士生导师, E-mail:xpli@bupt.edu.cn.
  • 基金资助:

    国家自然科学基金项目(61372036); 中央高校基本科研业务费,毫米波国家重点实验室开放课题经费(k201511)资助项目

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

摘要:

设计了一种基于共源结构的两级级联超宽带低噪声放大器. 该低噪声放大器采用了源端电感和四分之一阻抗变换器,在不恶化电路噪声系数的情况下具有较好的输入匹配. 通过使用GaAs赝调制掺杂异质结场效应晶体管(pHEMT)器件,在PCB板上实现了低噪声放大器的加工,加工测试结果与原理图仿真结果基本符合. 测试结果表明,该低噪声放大器的增益达到12±1.5 dB,最小噪声系数为1.8 dB,输入输出匹配结果良好.

关键词: 共源级联, 输入匹配, 低噪声放大器, 噪声系数

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

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