放大电路频率特性的理论和实验分析

The Theory and Experiment Analyses of Amplifier′s Frequency Characteristics

频率响应是放大电路的一个重要参数,也是选择电路组态和设计电路的一个重要依据。从理论上分析了影响基本共射放大电路频率特性的参数,并且应用仿真实验平台Multisim2001进行相应的分析验证。实验结果与理论分析相符,即影响基本共射放大电路下限截止频率的主要是射极旁路电容、影响上限截止频率的主要是基-射极之间的结电容。

An importance parameter of amplifier and an importance gist of selecting amplifier configuration and designing circuits is frequency response, the article analyseses the facteres which influence C - E circuit＇s frequecy characteristics, and based on the Multisim2001 workbench the writer does experiments. The experiments＇ result is reponse to theory analysis, the main reson refluences f1. is Ce and the main reson refluences fH is Cb - e.