文档介绍：成绩: 分
电子工程系
课程设计报告书
课程设计名称
电子技术课程设计
题目
有源二阶低通滤波器
学生姓名
专业
电子信息工程
班级
QQ
日期: 2009 年 6 月日
摘要:本文主要介绍了二阶压控电压源低通滤波器, 低通滤波器是一种典型的选频电路,在给定的频段内,理论上它能让信号无衰减地通过电路,这一段称为通带外的其他信号将受到很大的衰减,具有很大衰减的频段称为阻带,通带与阻带的交界频率称为截止频率,对滤波器的基本要求是:(1)通带内信号的衰减要小,阻带内信号的衰减要大,由通带过渡到阻带的衰减特性陡直上升;(2)通带内的特性阻抗要恒为常数,以便于阻抗匹配。,EWB等软件,用来制作电路板和设计的仿真计算等.
关键字: 低通;UA741;滤波; 截止频率;
Abstract:The lowpass filter one selecting circuit frequently typical, give the frequency band definitely, in theory it make signal is it decay to have through circuit, the called outside of the bandpass other signal receive heavy decay very, very great frequency band that decays is called and hindered bringing, the bandpass and bounded frequency of hindering the area are called and closed at frequency, the basic demand of the wave filter is: (1) Bandpass decay of signal light, hinder with interior signal heavy decay , carry out the transition to from bandpass decay brought to hinder characteristic steep to rise direct; (2)It is a constant that the characteristic in the bandpass is permanent in impedance, so that impedance is matched. This article introduced the active low pass filter,This filter mainly use in the clipped wave passing in the certainfrequencyThe main chip is UA741 transports putting。
Key words:low pass;UA741;Filter;Stops-frequency
目录
前言…………………………………………………………………………………………1
1. 总体设计方案………………………………………………………………………2
有源二阶低通滤波器方案………………………………………………………2
滤波器方案设计……………………………………………………………2
………………………………………………………5
2. 单元模块设计………………………………………………………………………3
滤波器电路设计…………………………………………………………………6
有源二阶低通滤波器的优点……………………………………………6
滤波电路分析……………………………………………………………6
电路传递函数数和特性分析……………………………………………6
………………………………………………………7
3. 软件调试
……………………………………………………8
使用Multisim 软件测二阶低通滤波器的幅频特性……………………………8
………………………………………9
4. 系统功能…………………………………………………………………12
5. 设计总结…………………………………………………………………12
6. 参考文献……