毕设 业计
（20 届）
双极点巴特沃斯低通有源滤波器的设计与研究
所在学院 专业班级 电子信息工程 学生姓名 学号 指导教师 职称 完成日期 年 月
摘 要
随着计算机技术、集成工艺和材料工业的发展，滤波器的发展也上了一个新台阶，并且朝高精度、低功耗、小体积方向发展，目前在很多领域得到应用，它在人们的日常生活中起着不可忽视的作用。
本文介绍了双极点巴特沃斯低通有源滤波器的设计与研究，通过对双极点巴特沃斯低通滤波器电路的设计，详细叙述了滤波器的实现过程。通过对低通原型滤波器进行频率变换与阻抗变换，得到新的目标滤波器。本文阐述了由低通滤波器到高通滤波器、带通滤波器以及带阻滤波器的转换。还介绍了滤波器的相关理论，并延伸到巴特沃斯高阶滤波器的设计。本设计用运放、电容和电阻来具体实现巴特沃斯低通有源滤波器的电路结构。并采用ORCAD软件来实现电路的设计，完成系统仿真，通过计算机PSpice软件仿真来查看结果并分析，证明所设计的滤波器具有较好的性能参数。
关键词：低通滤波器；ORCAD软件；巴特沃斯；运放
- 2 - Abstract
With developing of computer technology, integrated process and materials industries, filter development is also on a new level, and develop towards the high-precision, low power, small size, currently applied in many fields, it plays significant role in people's daily life.
This article describes the design and research of two-pole Butterworth low pass active filter. By pole Butterworth low-pass filter circuit, states the realization process of the filter in detailed. By low-pass prototype filter frequency conversion and impedance transformation, gets the new target filter. This paper expounds the conversion from low-pass to high-pass, band-pass and band-stop filters. Also introduced the theory of filters, and extends to higher order Butterworth filter design. The design uses the operational amplifier, capacitors and resistors to the concrete realization of Butterworth low-pass active filter circuit structure. And using ORCAD circuit design software achieves complete system simulation. Through the computer Pspice software simulation to see results and analysis, proof design filter has better performance parameters.
Key Words: Low-pass filter ; ORCAD software; Butterworth; Op-amp
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双极点巴特沃斯低通有源滤波器的设计与研究【毕业作品】
