基于频谱分析仪的调幅信号快速测试方法  

Fast Measurement Method for AM Signal Based on Spectrum Analyzer

作　　者：刘鹏飞[1] 

机构地区：[1]中国电子科技集团公司第二十七研究所,郑州450047

出　　处：《电光系统》2015年第3期50-53,共4页Electronic and Electro-optical Systems

摘　　要：脉冲调幅波是雷达和电子对抗系统中广泛应用的一种信号形式，本文介绍了一种使用频谱分析仪快速测试脉冲调幅信号的方法，使用频谱分析仪AV4033对信号发生器产生的脉冲调幅信号进行了测试，通过合理设置频谱分析仪扫频宽度、带宽等参数可以快速简单的得到调幅信号的载波频率，调幅系数等参数。同时使用峰值功率分析仪8990B对该脉冲调幅信号进行了测试，得到调幅信号的时域波形。测试结果表明，虽然峰值功率分析仪观测时域信号比较直观，但是在定量测试方面，频谱分析仪要优于示波器。Pulse amplitude modulation wave is a widely used signal form in radar and electronic counter system. This paper introduces a method to quickly test pulse amplitude modulation signal using spectrum analyzer. The pulse amplitude modulation signal generated by signal generator is tested by AV4033 spectrum analyzer. The carrier frequency, modulation coefficient and other parameters are quickly and easily obtained via reasonable setup of spectrum analyzer~ span and bandwidth,etc. At the same time,the peak power analyzer 8990B is also used to test the pulse amplitude modulation signal and the time-domain waveform of amplitude modulation signal is obtained. The test results show that, although the peak power analyzer can directly observe time domain sig- nal, the spectrum analyzer is superior to oscilloscope in quantitative test.

关 键 词：频谱分析仪 调幅信号 调幅系数 快速测试 

分 类 号：TN98[电子电信—信息与通信工程]