毕业设计 有源模拟带通滤波器的设计与分析 doc

毕 业 设 计 [论 文]

题目：有源模拟带通滤波器的设

计与分析

系 别：电气与电子工程系 专 业：电子信息工程 姓 名：张亚菊 学 号：123408115 指导教师：陈英

河南城建学院

2012年 5 月 22 日

摘 要

几乎在所有的工程技术领域中都会涉及到信号处理问题 ，滤波器作为信号处理的重要组成部分，已发展的相当成熟。随着计算机技术的发展，模拟电子技术已经成为一门应用范围极广，具有较强实践性的技术基础课程。电子电路分析与设计的方法也发生了重大的变革。滤波器在日常生活中非常重要，运用非常广泛，在电子工程、通信工程、自动控制、遥测控制、测量仪器、仪表和计算机等技术领域，经常需要用到各种各样的滤波器。随着集成电路的迅速发展，用集成电路可很方便地构成各种滤波器。

本文阐述了有源带通滤波器的基本原理，对滤波器的传输函数进行了推导并给出了两种设计方法：一种是无限增益多路负反馈（MFB）有源二阶带通滤波器电路，另一种是压控电压源（VCVS）有源二阶带通滤波器电路，并对两种电路的频率特性进行了分析，通过Multisim作电路仿真设计。经过仿真及仿真结果的分析验证了所设计的方法是正确的。

关键词：有源滤波器，带通，频率特性，Multisim7，分析

河南城建学院本科毕业设计（论文） 摘要

Abstract

In almost all engineering fields are related to signal processing, filter as an important signal processing component, has developed quite mature.With the development of computer technology, simulation of electronic technology has become a very wide range of applications, has a strong practical technical basic course. Electronic circuit analysis and design methods have been major changes. Filters are important in our everyday life, use is very extensive, in electronic engineering, communication engineering, automatic control, remote control, measurement equipment, instruments and computers and other technical fields, often need to use a variety of filter. With the rapid development of integrated circuits, integrated circuits can be used to easily form various filter.

This paper expounds the basic principle of active band pass filter, the filter transfer function is deduced and gives two kinds of design methods: one is the infinite gain multiple negative feedback ( MFB ) active two order band pass filter circuit, the other is a voltage-controlled voltage source ( VCVS ) active two order band pass filter circuit, and the two circuit frequency characteristics are analyzed, through the Multisim circuit simulation design.After simulation and the simulation results verify the design method is correct.

Key words: active power filter, Band pass, frequency characteristic, Multisim7, Analysis

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河南城建学院本科毕业设计（论文） Abstract

目 录

摘 要 ............................................................. II Abstract ........................................................... II 1 绪论 .............................................................. 2

1.1 滤波器的简介 ................................................. 2 1.2 滤波器的发展历程 ............................................. 2 1.3 滤波器的分类 ................................................. 2 1.4 滤波器的原理 ................................................. 3

1.4.1模拟滤波的原理 .......................................... 3 1.4.2带通滤波的原理 .......................................... 4

2 技术指标及参数介绍 ................................................ 7

2.1 技术指标 ..................................................... 7 2.2 实际滤波器的参数介绍 ......................................... 7 3 电路的模块介绍 .................................................... 9

3.1 高通滤波器的设计 ............................................. 9

3.1.2电路参数的计算 .......................................... 9 3.1.3 电路的仿真结果 ......................................... 9 3.2 低通滤波器的设计 ............................................ 10

3.2.1电路的设计 ............................................. 10 3.2.2电路参数的计算 ......................................... 11 3.2.3电路的仿真结果 ......................................... 12 3.3 运算放大器LM324 ............................................ 13 4 方案的设计 ....................................................... 15

4.1 方案一：二阶压控电压源带通滤波电路 .......................... 15

4.1.1方案一的电路设计 ....................................... 15 4.1.2方案一的电路计算 ....................................... 16 4.2 方案二:无限增益多路反馈带通滤波电路 ......................... 17

4.2.1方案二的电路设计 ....................................... 17

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