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.
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)
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)。
关键词
同步
锁相环
频率合成器
synchronization
phase-locked loop
frequency synthesizer
