一种实用的5阶电荷泵锁相环性能分析与设计仿真  

Analysis and Simulation of an Effective Five Order Charge Pump Phase Locked Loops

作　　者：邓茜[1] 王玫[1] 李加升[1] 

机构地区：[1]桂林电子科技大学信息与通信学院,广西桂林541004

出　　处：《计算机工程与科学》2009年第8期144-146,共3页Computer Engineering & Science

摘　　要：本文在分析5阶锁相环基本原理和线性化数学模型的基础上,给出了一种实用的4阶环路滤波器的设计方法,用Matlab编程计算锁相环的参数;用ADS工具对系统性能进行仿真,仿真结果与预期结果相吻合;比较了具有相同环路带宽和相位裕度下的高阶锁相环的杂散性能。这对5阶电荷泵锁相环的系统设计和仿真有一定的指导意义。With an analysis of the fundamentals of the five order charge pump phase locked loops, the paper presents an effective design method of the forth-order loop filter. The formula is verified by the tools of ADS and MATLAB. The simulation result meets the prospected data. The spurious restraining of five-, four- and three- order charge pump phase locked loops is analyzed with the same loop bandwidth and phase margin. The programming method has certain significance in the system-level design and simulation of the five-order CPPLL.

关 键 词：电荷泵 环路滤波器 杂散抑制 ADS仿真 

分 类 号：TN74[电子电信—电路与系统]