Roof Antenna的测量与性能分析  

Measurement and Analysis of the Vehicle Antenna LNA System

作　　者：黄晓波 刘志强 

机构地区：[1]上海德科电子仪表有限公司

出　　处：《仪表技术》2018年第1期35-37,共3页Instrumentation Technology

摘　　要：主要针对有源低成本车载收音机天线Roof Antenna进行了测量和分析,系统要测量和分析的参数主要包括天线放大器增益、互调失真、放大器稳定性及放大器的噪声。采用网络分析仪对放大器增益进行测量,对测量方法与测量结果进行了说明;采用频谱分析仪对放大器进行交调失真测量,给出交调失真分析的结论;在暗室中对天线的噪声进行测量,对结果与噪声指标进行分析对比。在装车测试前对LNA参数的准确测量及各种相关数据的总结、对比能够快速发现设计缺陷并对设计进行有针对性地改进,极大地提高了设计的准确性和可靠性。The Roof Antenna system of the car radio is measured and analyzed,which mainly includes antenna amplifier gain,intermodulation distortion,and amplifier stability and amplifier noise. The amplifier gain is measured by a network analyzer. The measuring method and the result are described. The distortion of the amplifier is measured by using the spectrum analyzer and the conclusion is given. The noise is measured in anechoic chamber and the result is analyzed. The accurate measurement of parameters and summary of various related data can greatly improve the accuracy and reliability of the antenna.

关 键 词：FM/AM 低嘈声放大器 车载收音机 

分 类 号：TN722[电子电信—电路与系统]