计算机与现代化 ›› 2013, Vol. 1 ›› Issue (5): 206-210.doi: 10.3969/j.issn.1006-2475.2013.05.048

• 应用与开发 • 上一篇    下一篇

基于Matlab/Simulink的频率合成器模型设计

郝连秀,王浩轩,张亮   

  1. 天津大学电子信息工程学院,天津300072
  • 收稿日期:2013-01-06 修回日期:1900-01-01 出版日期:2013-05-28 发布日期:2013-05-28

Design of Frequency Synthesizer Model Based on Matlab/Simulink

HAO Lian-xiu, WANG Hao-xuan, ZHANG Liang   

  1. School of Electronic Information Engineering, Tianjin University, Tianjin 300072, China
  • Received:2013-01-06 Revised:1900-01-01 Online:2013-05-28 Published:2013-05-28

摘要: 锁相环型频率合成器通常作为频率源提供给无线通信系统,实现调制、解调与频谱搬移等重要功能。锁相环是一个典型的负反馈系统,它的环路参数选取以及系统级设计对锁相环的性能起着至关重要的作用。本文基于Matlab/Simulink提出一种快速的行为级建模方法。通过行为级建模与动态仿真,初学者可以快速地掌握锁相环的工作原理,了解环路带宽、相位裕度、锁定时间等参数之间的折衷关系,为电路设计提供指导。

关键词: Simulink, Matlab, 频率合成器, 行为建模

Abstract: Phase locked loop (PLL) is performed as the source of the wireless communication system to complete modulation, demodulation, spectrum transform and so on. As a typical negative feedback system, the system level design and parameter selection directly determine the quality of PLL. In this paper, a behavioral model of phase locked loop based on Matlab/Simulink is proposed. Through the dynamic simulation, beginners can quickly master the working principle of the PLL, understand the tradeoff between loop bandwidth, phase margin and the setting time, provide guidance for circuit design.

Key words: Simulink, Matlab, frequency synthesizer, behavioral modeling

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