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辽宁科技大学 集成电路应用 论文

辽 宁 科 技 大 学

集成电路应用课程论文

论文题目：基于Multisim的高频功率放大器 学院、系：电子与信息工程学院 专业班级：自动化126 学生姓名： 任课教师：

2015 年 6 月 10 日

答辩成绩 撰写成绩 总成绩 辽宁科技大学 集成电路应用 论文

基于Multisim的高频功率放大器

摘要：功率放大器是指在给定失真率条件下，能产生最大功率输出以驱动某一负载的放大

器。本文利用 Multisim 先进的高频仿真功能构建了由甲类和丙类功率放大器级联的高频功率放大器，并进行仿真实验采用分级测试、两级级联的形式，给出了甲类功率放大器的工作状态，丙类功率放大器的调谐特性及级联放大器的负载特性分析。所得仿真结果与理论分析一致，并且能显示出一些无法用电子仪器设备显示的波形和曲线,使结果更直观,更易于理解。

关键字：高频功率放大器；Multisim；仿真分析；丙类功率放大器

Abstract：Power amplifier is refers to under the condition of a given distortion rate, can

produce a maximum power amplifier output to drive a load. Using Multisim advanced high frequency simulation function, this paper builds by class a and class c power amplifier cascade of high frequency power amplifier, and the simulation experiment using grading test, two display in the form of, given the working state of the class a power amplifier, class c power amplifier of the tuning characteristics and load characteristic analysis of cascade amplifier. Simulation results are consistent with theoretical analysis, and can show some can't use electronic instruments and equipment and the wave curve, make the results more intuitive, easier to understand.

Key words: high-frequency power amplifier；Multisim； simulation analysis；Class C

Amplificating

辽宁科技大学 集成电路应用 论文

目录

1.引言 ........................................................................................................................................................................................ 1 2功率放大器简介 .................................................................................................................................................................. 1

2.1功率放大器的特点 .................................................................................................................................................. 1 2.2功率放大器的分类 .................................................................................................................................................. 2 3.高频功率放大器简介 .......................................................................................................................................................... 4

3.1高功放知识简介 ...................................................................................................................................................... 4 3.2 高功放电路工作原理 ............................................................................................................................................. 4 3.3高功放性能分析 ...................................................................................................................................................... 5

3.2.1谐振功率放大器的动态特性 ..................................................................................................................... 5 3.2.2功率放大器的负载特性 ............................................................................................................................. 5 3.2.3放大器工作状态的调整 ............................................................................................................................. 7

4.电路设计与参数计算 .......................................................................................................................................................... 8

4.1方案的设定 ............................................................................................................................................................... 8 4.2 单元电路设计.......................................................................................................................................................... 9

4.2.1 甲类谐振放大器 ......................................................................................................................................... 9 4.2.2 丙类高功放 ............................................................................................................................................... 10 4.3 总体电路图设计 ................................................................................................................................................... 10 5电路仿真与结果分析 ........................................................................................................................................................ 11 6元件清单 ............................................................................................................................................................................. 13 7总结 ...................................................................................................................................................................................... 14 参 考 文 献 ........................................................................................................................................................................... 14 致谢 ......................................................................................................................................................................................... 15