基于Matlab的锁相环频率合成器教学实践  

Teaching Practice of Phase-locked Loop Frequency Synthesizer Based on Matlab

作　　者：梁青青 周小燕 赵春艳 LIANG Qingqing;ZHOU Xiaoyan;ZHAO Chunyan(College of Media Engineering,LanZhou University of Art and Science,Lanzhou 730070,China)

机构地区：[1]兰州文理学院传媒工程学院,兰州730030

出　　处：《电气电子教学学报》2024年第3期167-171,共5页Journal of Electrical and Electronic Education

基　　金：兰州文理学院课程思政师范课程(2022-KCSZ-sfkc-05);兰州文理学院2021年教育教学改革项目(2021-ZL-jxgg-18)。

摘　　要：通信系统性能好坏很大程度上取决于有没有一个良好的同步系统。在“通信原理”课程中提到了基于锁相环的同步系统,但是对这部分内容介绍简单,没有系统的推导以及结论。基于Matlab的锁相环系统,能够得到不同参数下的锁相环的环路滤波器幅频响应和闭环响应,在Simulink工具箱中,设计一个基于锁相环的频率合成器,让学生可以较好地掌握锁相环相位锁定的原理以及同步系统,为“通信原理”课程学习提供了支持。The performance of a communication system largely depends on whether there is a good synchronization system.In the course of Communication Principles,the textbook mentions synchronous systems based on phase-locked loops,but the introduction to this part is relatively simple and there is no systematic derivation or conclusion.Based on Matlab's phase-locked loop,through simulation programs,the amplitude frequency response and closed-loop response of the phase-locked loop filter under different parameters can be obtained,enabling students to understand the principle of the phase-locked loop.In the Simulink toolbox,a frequency synthesizer based on the phase-locked loop is designed,enabling students to understand the principle of synchronization and providing support for learning communication principles courses.

关 键 词：同步 锁相环 频率合成器 

分 类 号：TN911-4[电子电信—通信与信息系统] G642[电子电信—信息与通信工程]