高频信号源的原理与制作课程设计 模版

课程设计报告 题目: 高频信号源的设计与制作原理 所属系 电子工程系 专 业 电子信息工程 学 号 姓 名 指导教师 起讫日期 设计地点 课程设计论文

I 高频信号源的原理与制作 摘要 在通信领域中，锁相环频率合成器起着越来越重要的角色。频率合成器是一个系统，最初产生的一系列频率为参考频率的整数倍，参考频率通常是固定的。这样的合成器称为整数N频率合成器。频率合成器技术也不断前进，出现也很多新型的频率合成电路，并在通信电路中得到广泛应用。 本次设计是以单片机AT89C51为核心元件同时采用LED数码管显示器动态实现锁相环频率合成器的设计、制作、观察、测试。

关键词：高频 频率源 信号合成 课程设计论文

I Principle and Production of High-frequency Signal Generator Abstract

In the field of communications, PLL synthesizers playing an increasingly important role. Synthesis is a system, initially the frequency of a series of reference for the entire frequency several times, the reference frequency is usually fixed. This synthesizer called integer N Synthesis. Synthesis technology is constantly advancing, there are a lot of new frequency synthesizer circuit, and in the communications circuits are widely used.

This design is utilizing the SCM to work, among which the SCM AT89C51 is the core element. Meanwhile, LED digitron monitor dynamically to be designed ,invented, watched ,texted.

Keywords: phase locked loop (PLL)；PROTEL；PCB CARD；Synthesis 课程设计论文

I 目 录 高频信号源的原理与制作 ........................................................................................................................................ I Principle and Production of High-frequency Signal Generator .................................................................................. I Abstract ....................................................................................................................................................................... I 第一章 课程背景 ............................................................................................................................................... 1 1.1 高频信号源 ....................................................................................................................................... 1 1.2锁相环 ................................................................................................................................................ 1 1.3单片机 ................................................................................................................................................ 1 1.4频率合成器 ........................................................................................................................................ 1 第二章 课程目的 ..................................................................................................................................................... 2 2.1树立正确的设计理念 ........................................................................................................................ 2 2.2学会项目的设计流程 ........................................................................................................................ 2 2.3养成良好的研究习惯 ........................................................................................................................ 2 2.3巩固与知新 ......................................................................................................................................... 2 第三章 课程任务 ..................................................................................................................................................... 3 3.1 基本元器件认识 ............................................................................................................................... 3 3.2 高频信号源的制作 ........................................................................................................................... 3 第四章 课程介绍 ..................................................................................................................................................... 4 4.1PLL频率合成 ...................................................................................................................................... 4 4.1．1 LC正弦振荡器电路 .............................................................................................................. 4 4.1．2环路滤波器 ............................................................................................................................ 5 4.1．3锁相频率合成器 .................................................................................................................... 6 4.2频率设置及显示电路 ........................................................................................................................ 7 4.3输出电路 ............................................................................................................................................ 8 4.4电源部分 ............................................................................................................................................ 9 第五章 调试总结 ................................................................................................................................................... 10 5.1调试电路 .......................................................................................................................................... 10 5.1．1压控振荡器电路的调试....................................................................................................... 10 5.1. 2分频方波信号的观察 .......................................................................................................... 10 5.1. 3场效应管静态工作电压调试 ............................................................................................... 10 5.1. 4输出波形及显示电路调试................................................................................................... 10 5.2实验总结 ........................................................................................................................................... 10 5.2. 1设计步骤 .............................................................................................................................. 10 5.2. 2布局原则 ...............................................................................................................................11 5.2. 3焊接问题 ...............................................................................................................................11 5.2. 4调试问题 ...............................................................................................................................11 第六章 PROTEL 99SE 介绍 ................................................................................................................................... 12 6.1 PROTEL99SE的运行环境 ................................................................................ 错误！未定义书签。 6.2电路工程设计部分 .......................................................................................... 错误！未定义书签。 6.3电路仿真与PLD部分 ...................................................................................... 错误！未定义书签。 第七章 心得体会 ................................................................................................................................................. 12 附录 ......................................................................................................................................... 错误！未定义书签。 原理图 ....................................................................................................................... 错误！未定义书签。