二阶有源高通滤波器的设计课程设计.docx

河北科技大学课程设计题 目： 有源高通滤波器 院 （系）： 信息科学与工程学院专 业： 电子信息工程 学生姓名： 王霞 学 号： 9100701312 指导教师： 李海斌 摘要：二阶高通滤波器是容许高频信号通过、但减弱（或减少）频率低于截止频率信号通过的滤波器。高通滤波器有综合滤波功能，它可以滤掉若干次高次谐波，并可减少滤波回路数。对于不同滤波器而言,每个频率的信号的减弱程度不同。其在音频应用中也使用低音消除滤波器或者噪声滤波器。本设计为分别使用压控电压源和无限增益多路反馈两种方法设计二阶高通滤波器。二者电路都是基于芯片UA741设计而成。将信号源接入电路板后，调整函数信号发生器的频率，通过观察示波器可以看到信号放大了2倍。本项目所做的高通滤波器的功能就是对特定频率的频点或该频点以外的频率进行有效滤除，得到一个特定频率或消除一个特定频率，让有用信号尽可能无衰减的通过，对无用信号尽可能大的衰减，即：它允许信号中的高频分量通过，抑制低频。本项目所做的高通滤波器的功能就是对特定频率的频点或该频点以外的频率进行有效滤除，得到一个特定频率或消除一个特定频率，让有用信号尽可能无衰减的通过，对无用信号尽可能大的衰减。关键词：高通滤波器，二阶，有源，无源，增益。Abstract：Second-order high-pass filters is to allow high frequency signals through, but weakened (or reduce) frequencies below the cutoff frequency signal passes through a filter. High-pass filter integrated filter function, it can filter out a number of high-order harmonics, and reduce the filter circuit. For purposes of different filters, each frequency signals weakened to varying degrees. Its audio bass or noise elimination filter filters are also used in the application. This design uses voltage-controlled voltage source and infinite gain multiple feedback design of second-order high-pass filter in two ways. Both circuits are based on chip UA741 designed. After the signal source connected to the circuit board, adjust the frequency of function signal generator, can be seen by observing the oscilloscope signal amplification by a factor of 2 times. This project done in high-pass filter function is the specific frequency of the frequency or the frequency outside the frequency filter, a particular frequency or elimination of a specific frequency, so the useful signal as much as possible without attenuation of the signal through the useless, as large as possible attenuation, namely: it allows signal high frequency components through。Keywords：High-pass filter, second-order, active, passive, gain. 目 录1前言…………………………………………………………………………….4 设计目标……………………………………………………………….....4 设计目的……………………………………………………………….....42 总体方案设计…………………………………………………