简易线性相位计设计  

Design of Simple Linear Phase Meter

作　　者：王睿[1] 王毅飞 王菲[1] 杨罕[1] WANG Rui;WANG Yifei;WANG Fei;YANG Han(College of Electronic Science and Engineering,Jilin University,Changchun 130012,China;Jilin Branch,China United Network Communications Company Limited,Changchun 130021,China)

机构地区：[1]吉林大学电子科学与工程学院,长春130012 [2]中国联合网络通信有限公司吉林分公司,长春130021

出　　处：《吉林大学学报（信息科学版）》2020年第4期453-456,共4页Journal of Jilin University（Information Science Edition）

基　　金：吉林大学本科教学改革研究基金资助项目(2019XYB209)。

摘　　要：相位是分析电信号的重要参数,通常相位测量电路的输出是相位差的绝对值,这种非线性的输入输出关系给实现高稳定性、低成本的硬件电路设计带来困难。为此,采用运放和RS(Reset Set)触发器设计了一种线性相位检测电路,实现对双路正弦信号的整形及边沿触发功能,最后通过压流转换电路,将相位测量信息显示于普通数字万用表的电流测量档。实验表明,采用运放LM6144时,当测试信号频率小于100 kHz时,平均偏差小于0.3°,解决了非线性相位检测的设计缺陷。Phase is important parameter for analyzing electrical signals.Usually the output of the phase measurement circuit is based on absolute phase difference.This nonlinear input-output relationship makes it difficult to realize high stability and low cost hardware circuit.A linear phase detection circuit is designed by using operational amplifier and RS(Reset Set)flip-flop to realize the function of shaping and triggering the edge of the double sinusoidal signal.Using operational amplifier LM6144,the mean deviation is less than 0.3°when the test signal frequency is less than 100 kHz.The design defect of nonlinear phase detection is solved.

关 键 词：相位测量 电压电流变换 运放 

分 类 号：TN722[电子电信—电路与系统]