宇航计测技术

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一种超低调频失真的测试方法

邱斌1;余清华1;丁风海1;夏伟1;王琳娜1   

  1. 1、中国卫星海上测控部,江阴 214431
  • 出版日期:2013-04-15 发布日期:2013-04-15
  • 作者简介:邱斌(1976-),男,硕士,工程师,主要研究方向:无线电计量测试。

A Measurement Method for Ultra-low Frequency Modulation Distortion

QIU Bin1;YU Qing-hua1;DING Feng-hai1;XIA Wei1;WANG Lin-na1   

  1. 1、China Satellite Maritime Trcaking and Control Department, Jiangyin 214431
  • Online:2013-04-15 Published:2013-04-15

摘要: 调频非线性失真是调频信号计量中需要测试的一个重要项目,对于一些调频失真指标很高的信号源,传统的失真度测量仪已不能直接测量其失真指标。通过分析调频非线性失真和调频线性度的关系,探讨了测试超低调频失真的一种方法,解决了用失真度测量仪不能直接对调频非线性低失真测试的问题。

关键词: 调频, 失真, 线性度, 灵敏度

Abstract: FM nonlinear distortion is an important item in the FM signal measurement. For a high-performance FM signal source, the distortion meter hasn’t directly measure the distortion index. Through analysing the relationship between FM nonlinear distortion and frequency modulation linearity, a method of test ultra-low-frequency modulation distortion is explored and the problem that FM nonlinear distortion can not directly measured by a distortion meter is solved.

Key words: Frequency modulation, Distortion, Linearity, Sensitivity