基于幅频特性的相频特性的测试法研究及仿真  

The research and simulation of phase-frequency characteristics based on the amplitude frequency characteristics

作　　者：贺素霞[1] 乐丽琴[1] 

机构地区：[1]黄河科技学院信息工程学院,河南郑州450063

出　　处：《电子设计工程》2013年第21期123-125,129,共4页Electronic Design Engineering

基　　金：郑州市重点实验室光电信息技术及应用(114PYFZ505)

摘　　要：目前关于相频特性的检测是基于相位检波的原理而成的,由于其价格昂贵而使其应用受到限制。该文由幅频特性出发,通过幅频特性和相频特性的关系,采用测量其幅频特性作为相频特性的初始值,讨论了利用求参数法,利用特殊值法以及求f0、BW0.7法求解相频特性的方法,并应用MATLAB编程精确的给出相频特性的测试图。The current detection is based on the phase-frequency characteristic from the principle of the phase detector,and its application is limited due to its expensive price.In this paper,Through discussion amplitude frequency characteristic and phase-frequency characteristics of the relationship,Measure the amplitude-frequency characteristics as the initial value of the phase-frequency characteristic,Discussed the parameters method,the special value method andf0、BW0.7 requirements method for the Solving of phase frequency characteristics,and the accurate test chart of phase frequency characteristics is given.

关 键 词：幅频特性 相频特性 仿真 测试 

分 类 号：TN93[电子电信—信号与信息处理]