摘要
采用理论计算和仿真分析的方法,对电阻和电容构成的无源低通滤波和高通滤波电路进行分析。理论计算主要研究传递函数,讨论响应的频率特性;仿真采用电子工作平台EWB软件,应用交流分析方法,从波特图仪中直观观察幅频响应和相频响应。仿真结果得到,在不同的频率下,电路输出的幅值和相位随着频率的变化而产生不同的响应,通过改变电阻和电容的参数,可得到不同的通频带宽度,说明仿真和理论分析的结果相同。但仿真分析相对硬件实验来说,优点在于改变元件参数时更加容易,仿真使电路分析更加灵活、方便。
This paper applies the method of theory calculation and simulation analysis,analysis of the passive low-pass filter and high pass filter circuit composes of the resistance and the capacitance.Theoretical calculation main reach the transfer function,discuss the frequency response characteristic; simulation using Electronics Workbench software EWB,application the AC analysis method,directly observe the amplitude and phase frequency response from the Potter graph instrument.From the simulation results,at different frequencies,amplitude and phase of output changes produce different response with the frequency,and by changing the parameters of resistance and capacitance we can get the different band width,and get the same results from the simulation and analysis.But the simulation analysis of the relative than hardware experiment,is the advantages of easy to change the element parameters,simulation of circuit analysis is more flexible and convenient.
出处
《国外电子测量技术》
2014年第1期40-42,49,共4页
Foreign Electronic Measurement Technology
关键词
滤波
电路分析
仿真
频率
函数
filter
circuit analysis
simulation
frequency
function
