摘要
根据二端口网络理论，对米尔曼Ｊ提出的单环负反馈放大器的方块图分析法作了若干补充。对反馈放大器输入阻抗和输出阻抗的计算进行了讨论，提出了６条环外阻抗鉴别准则．指出了输出阻抗的正确计算方法：计算基本放大器的增益时．必须考虑信号源的内阻，并把反馈信号端口作为基本放大器的输入端口．
ccording to the two-port network theory, some complements on the analysis of single-loop feedback amplifier by means of black diagram topology are introduced. Calculation on input impedance and output impedance of feedback amplifier is discussed. Six criteria for distinguishing outside impedance of the feedback loop from the basic amplifier are given. A correct method for calculating output impedance in negative feedback amplifier is put forward. It is suggested that while calculating the gain of basic amplifier, one must deal with the resistance of signal source and take the port of feedback signal to be the port of basic amplifier.
出处
《江汉石油学院学报》
CSCD
北大核心
1994年第3期85-89,共5页
Journal of Jianghan Petroleum Institute
关键词
电路分析
反馈放大器
方块图
放大器
circuit analysis
feedback amplifiers
block diagrams
(input impedance)
(output impedance)
