期刊论文

Automatic Modulus Controlled All Digital Phase Locked Loop with Large Lock- in Range

中文

现代电子技术

1004-373X

2009

32

20

11-13,16

10.16652/j.issn.1004-373x.2009.20.022

湖南省科技厅资助项目（05GK3049）；

本校为第一机构

针对传统的全数字锁相环只能锁定已知信号和锁频范围较小的问题，提出了一种自动变模控制的宽频带全数字锁相环。对比分析了各类全数字锁相环锁频、锁相的工作机理，提出了一种新的系统模型，重点研究了快速锁定和频带拓宽的原理及实现方法。应用EDA技术完成系统设计，并进行计算机仿真。仿真结果证实了该设计具有快的锁定速度、宽的锁频范围、并能快速跟踪频率突变的输入信号。该锁相环通用性强，易于集成，可作为IP核用于SoC的设计。

An automatic modulus controlled all digital phase locked loop with large lockin range is proposed for solving problems that the traditional ADPLI. only can lock a known signal and lock - in range is narrow. By comparing and analysing all sorts of frequency and phase locking mechinaisims respectively shown in different conventional all digital phaselocked loop systems,a novel system model is proposed. The principle and method of implementation about fast locked and widen bandwith are introduced emphasely. The whole system is designed by using EDA technology,and simulated by using computer. It m...