信号波形的产生与滤波电路

weishen

武汉工程大学

课程设计

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课题名称：信号波形的产生与滤波电路

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目录

摘要.....................................................................................................II Abstract................................................................................................ III 第一章绪论.......................................................................................... (1)

1.1 技术发展.............................................................................. . (1)

1.2 本课题研究内容………………………………..…………………………… .. x

第二章系统方案设计 (x)

2.1 任务分析............................................................................ (x)

2.2 三种方案比较...................................................................... (x)

2.3 方案选择......................................................................... (x)

第三章系统硬件设计…………………………………………………………… ..x

3.1 总体框图...................................................................... (x)

3.2 单元电路设计与参数选择................................................. (x)

第四章系统调试 (x)

4.1 测试仪表................................................................ (x)

4.2 单元电路测试............................................................. (x)

4.3 系统总体测试............................................................. (x)

4.4 指标测试分析与改进方法

总结 (x)

致谢 (x)

参考文献 (x)

摘要

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。用集成电路实现的滤波器与其他滤波器相比，其波形质量、幅度和频率稳定性等性能指标，都有了很大的提高。滤波器在电路实验和设备检测中具有十分广泛的用途。现在我们通过对滤波器器的原理以及结构设计一个能够低通、高通、带宽、阻带等多种形式的滤波器。

本设计利用迟滞电压比较器方波产生电路，产生10KHz的方波信号,方波信号是一种应用极为广泛的信号，它在科学研究、工程教育及生产实践中的使用也非常普遍，将产生的10KHz频率的可调方波信号通过带通滤波器，利用电路的频率特性实现对信号中频率成分的选择，通过有源滤波器产生一个10KHz的正选基波信号，得到峰峰值为6V以上的正弦信号，最后由电压放大电路将信号进行不失真放大，从而产生所需信号.

关键词：方波信号迟滞比较器带通滤波器电压放大

Abstract

Filter is very important in their daily lives, the use of a very wide range in electronic engineering, communications engineering, automatic control, telemetry control, measuring instruments, meters and computer technology, often need to use a variety of filters. With the rapid development of IC, IC can easily pose a variety of filters. Implemented in integrated circuit filters and other filter, the waveform quality, amplitude and frequency stability

performance has greatly improved. The filter has a very wide range of applications in circuit experiments and equipment testing. Now we are by principle and structure of the filter's design a low pass, high pass, bandwidth, stopband and other forms of filters.

This design uses hysteresis voltage comparator square wave generating circuit to generate 10KHz square wave signal, square wave signal is the signal of a wide range of applications, it is also very common in science, engineering, education and production practice, will produce the 10KHz frequency, tunable square wave signal through a bandpass filter, the frequency characteristics of the circuit realization of the choice of signal frequency components, the active filter is selected to produce a 10KHz fundamental signal, to get the peak value of 6V or more sinusoidal signal by the voltage amplifier, the signal is not distorted amplification, resulting in the desired signal.

Keywords：Square Wave Signal Hysteresis Comparator Band-pass Filter

V oltage Amplification