反馈放大电路信号单向传递的条件  

Conditions of signal one-way transmission for feedback amplification circuits

作　　者：冯璐[1] 陈新[1] 李维晖[1] 史庆藩[1] 

机构地区：[1]北京理工大学物理学院物理实验中心,北京100081

出　　处：《现代电子技术》2016年第3期135-137,142,共4页Modern Electronics Technique

基　　金：北京理工大学实验室研究项目(2014BITSYB)

摘　　要：在反馈电路中,信号的逆向传递可能导致设计失败,要得到可靠的输出信号,需要进行精确的阻抗匹配计算和分析。在此采用等效变换的方法,对各类反馈电路进行等效变换,根据反馈控制模型和电路网络理论详细分析了电压并联反馈、电流串联反馈、电压串联反馈和电流并联反馈四种反馈放大电路信号单向传递的条件。The signal reverse transfer in feedback amplification circuits may lead to the design failure. It is necessary to perform the precise impedance matching calculation and analysis to obtain the reliable output signal. The equivalent transformation method is applied to conducting equivalent transformation for various feedback circuits. The conditions of signal one-way transmission for four feedback amplification circuits including voltage shunt feedback,current series feedback,voltage series feedback and current shunt feedback are detailedly analyzed based on the feedback control model and circuit network theory.

关 键 词：反馈放大电路 信号 单向传递 等效变换 

分 类 号：TN710-34[电子电信—电路与系统]