吉林大学学报(信息科学版) ›› 2020, Vol. 38 ›› Issue (4): 453-456.

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简易线性相位计设计

王睿1,王毅飞2,王菲1,杨罕1   

  1. 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
  • 收稿日期:2020-04-03 出版日期:2020-07-24 发布日期:2020-08-13
  • 作者简介:王睿( 1982— ) ,女,长春人,吉林大学高级工程师,博士,主要从事EDA 技术及应用研究,( Tel) 86-15844027409( E-mail) wang_r@ jlu. edu. cn。
  • 基金资助:
    吉林大学本科教学改革研究基金资助项目( 2019XYB209)

Design of Simple Linear Phase Meter

WANG Rui1,WANG Yifei2,WANG Fei1,YANG Han1   

  1. 1. College of Electronic Science and Engineering,Jilin University,Changchun 130012,China; 2. Jilin Branch,China United Network Communications Company Limited,Changchun 130021,China
  • Received:2020-04-03 Online:2020-07-24 Published:2020-08-13

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。

关键词: 相位测量, 电压电流变换, 运放

Abstract: 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.

Key words: phase measurement, voltage-current convert, operational amplifier

中图分类号: 

  • TN722