毕业设计(论文)-低通滤波器电路设计与实现精选.doc

毕业设计(论文)-低通滤波器电路设计与实现精选.doc

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毕业设计(论文)-低通滤波器电路设计与实现精选

单位代码 学号 __ 分 类 号 ___ 密 级 ___ ___ 毕业设计说明书 院(系)名称 专业名称 学生姓名 指导教师 2012年月日滤波器是一种二端口网络。它具有选择频率的特性,即可以让某些频率顺利通过,而对其它频率则加以阻拦目前由于在雷达、微波、通讯等部门,多频率工作越来越普遍,对分隔频率的要求也相应提高所以需用大量的滤波器。再则,微波固体器件的应用对滤波器的发展也有推动作用,像参数放大器、微波固体倍频器、微波固体混频器等一类器件都是多频率工作的,都需用相应的滤波器。 Low-pass filter circuit design and Achieve Author: Shang Shiwei Tutor: Song Jiayou Abstract Filter is a kind of two-port network. It has the characteristics of frequency choice, that can make some frequency pass, but to other frequency is to stop, because now in radar, microwave, communication, and other departments, more work frequency is becoming more and more common, the requirements of the frequency of space also increase; So need a lot of filter. Moreover, the application of microwave solid device for the development of the filter can boost, as parameters amplifiers, microwave solid times frequency device, microwave solid mixers, kind of device is working frequency, need corresponding filter. Low pass filter is a through the low frequency signal and attenuation or inhibit the high frequency signal components. Ideal filter circuit frequency response in bandpass should have certain amplitude and linear phase shift, and in which the amplitude with inner resistance should be zero. Active filter is to point to by amplifying circuit and network structure of RC filter circuit, it is actually a particular frequency response of the amplifier. The order number of filter, the higher amplitude frequency characteristics of the attenuation rate faster, but RC networks day, more component parameters are calculated the more detailed, the more difficult the commissioning of the circuit. According to the index, the design choose active second order bart wo low-pass filter can achieve the design requirements of the index, adjustable gain through the voltage of follow and reversed-phase amplifier to ach

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