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.
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)
关键词
幅频特性
相频特性
仿真
测试
amplitude-frequency characteristics
phase-frequency characteristics
simulation
test method
