计算机工程与应用 ›› 2014, Vol. 50 ›› Issue (13): 219-223.

• 信号处理 • 上一篇    下一篇

射频接收前端的ADS设计与仿真

贾  锋,杨瑞民   

  1. 解放军电子工程学院,合肥 230037
  • 出版日期:2014-07-01 发布日期:2015-05-12

ADS design and simulation of radio receiver front-end

JIA Feng, YANG Ruimin   

  1. PLA Electronic Engineering Institute, Hefei 230037, China
  • Online:2014-07-01 Published:2015-05-12

摘要: 射频接收前端作为射频信号分析仪的重要组成部分,对射频(RF)信号的测量起着决定性的作用。使用ADS软件,构建了一种860~960 MHz的射频信号分析仪射频接收前端系统仿真平台。在设计中采用了前置低噪声放大器(LNA)来降低系统噪声,利用自动增益控制(AGC)来实现接收前端的大动态范围。对设计的射频接收前端的增益、噪声系数、灵敏度、动态范围等指标进行了分析计算,并通过仿真工具进行了仿真验证。仿真结果表明,所设计的射频接收前端各项指标均达到了设计要求。

关键词: ADS软件, 信号分析仪, 射频前端, 噪声系数, 灵敏度, 自动增益控制

Abstract: As an important part of the Radio Front(RF) signal analyzer, the RF receiver front-end plays a decisive role in the measurement of the RF signal. This paper builds one kind of 860~960 MHz RF receiver front-end system simulation platform of RF signal analyzer using the Advanced Design System(ADS) software. The pre-LNA is used to reduce system noise, and AGC is used to achieve a large dynamic range of the RF receiver front-end in the design. The gain, noise figure, sensitivity, dynamic range and other indicators of RF front-end of the design are calculated, and simulated by the software simulation tools. The simulations show that the RF front-end designed in the paper meets the requirements of the design.

Key words: ADS software, signal analyzer, Radio Front-end, noise figure, sensitivity, Automatic Gain Control(AGC)