用于电荷泵锁相环的无源滤波器的设计  

A Passive Filter for Charge Pump Phase-Locked Loop

作　　者：姜梅[1] 刘三清[1] 李乃平[1] 陈钊[1] 

机构地区：[1]华中科技大学电子科学与技术系专用集成电路设计实验室,湖北武汉430074

出　　处：《微电子学》2003年第4期339-343,共5页Microelectronics

摘　　要：　探讨了应用于无线通信领域的锁相环中的环路滤波器的设计方法。采用基于锁相环交流频域特性分析的方法,设计了电荷泵锁相环中的无源低通滤波器。文章讨论了基本无源滤波器的设计方法,着重介绍了三阶无源低通滤波器的设计过程。给出了采用这种方法设计的滤波器和电荷泵锁相环的仿真结果。Design technologies for passive loop filters in phaselocked loop for wireless communications are investigated in the paper An analysis of a frequencydomain design technique for passive filters in charge pump phaselocked loops was presented The design method for basic passive filters is discussed with emphasis on the design of a 3rdorder passive lowpass filter Simulations of a loop filter designed using this method show good results in a practical phaselocked loop realization

关 键 词：电荷泵 锁相环 环路滤波器 无源低通滤波器 数模混合集成电路 

分 类 号：TN713.4[电子电信—电路与系统]