期刊信息

  • 刊名: 河北师范大学学报(自然科学版)Journal of Hebei Normal University (Natural Science)
  • 主办: 河北师范大学
  • ISSN: 1000-5854
  • CN: 13-1061/N
  • 中国科技核心期刊
  • 中国期刊方阵入选期刊
  • 中国高校优秀科技期刊
  • 华北优秀期刊
  • 河北省优秀科技期刊

基于集成运放的低频信号共模和差模成分的分离

  • (河北科技大学 信息科学与工程学院,河北 石家庄 050018)
  • DOI: 10.13763/j.cnki.jhebnu.nse.202302011

Research on Separation of Common Mode and Differential Mode Component of Low-frequency Signal Based Integrated Operation Amplifier

摘要/Abstract

摘要:

传导干扰包含共模干扰和差模干扰,需要采取不同措施来抑制共模干扰和差模干扰. 如果一对对地模拟信号中既含有共模成分又含有差模成分,工程上需要将其分离,基于集成 运算放大器构建了一个同相加法运算电路和一个减法运算电路,利用这个加法和减法运算电 路可对50 kHz以下低频输入信号中的共模成分和差模成分进行分离.用电路仿真的方法验证 了电路对信号中共模和差模成分分离的有效性,所构建的电路提供了一种分离50 kHz以下低 频信号中共模成分和差模成分的新方法.

Abstract:

Conduction interference includes common mode and differential mode interference.Different method are used to inhibit common mode and differential mode interference.If a pair of analog signals relative to ground contain both common mode and differential mode component,they are often separated in engineering.A same-phase addition operation circuit and a subtraction operation circuit based on operational amplifiers are designed.The two circuits were used to separate the common mode and differential mode component of a low-frequency input signal below 50 kHz.The way of circuit simulation is used to verify the validation of separation of common mode and differential mode component.The circuits provide a new method to separate common mode and differential mode component of a low-frequency signal below 50 kHz.

参考文献 13

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