| DDS+PLL可编程全数字锁相环及其应用 |
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| 引用本文： | 张灿,刘笑宙. DDS+PLL可编程全数字锁相环及其应用[J]. 遥测遥控, 2002, 0(6) |
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| 作者姓名： | 张灿 刘笑宙 |
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| 作者单位： | 中国科学院研究生院 北京100039(张灿)，中国科学院研究生院 北京100039(刘笑宙) |
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| 摘 要： | 提出一种采用 DDS+ PL L可编程全数字锁相环的设计方案 ,并介绍这种全数字锁相环的工作原理和应用。其中 ,锁相环采用数字控制频率综合器芯片 NCO作为环路振荡器 ,锁相环路的相位误差调整期望值存放在 RAM中 ,锁相环的工作状态和参数由计算机处理和控制。硬件电路采用大规模集成电路 EPL D集成。锁相环路具有快捕、量化精度高、抗干扰性强 ,任意可编程的特点。
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| 关 键 词： | 全数字锁相环 直接数字频率合成器 锁相环 |
Research and Application of DDS+PLL Programmable Digital Phase Looked Loop |
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| Zhang Can Liu Xiaozhou. Research and Application of DDS+PLL Programmable Digital Phase Looked Loop[J]. Telemetry & Telecontrol, 2002, 0(6) |
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| Authors: | Zhang Can Liu Xiaozhou |
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| Affiliation: | Zhang Can Liu Xiaozhou |
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| Abstract: | A project for full digital phase locked loop(FDPLL) is presented,and the operation principle and application of the FDPLL are introduced.This set is consisted of a direct digital synthesizer(DDS) and a phase locked loop(PLL).The expecting value of the phase error for PLL is stored in a RAM,and the status and operation parameters are handled by a calculator.A large scale integrated circuit EPLD is used in the set.This FDPLL is featured of quickly catching,high accuracy of quantization,Low susceptibility to interference,and convenient for programming. |
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| Keywords: | Full digital phase locked loop Direct digital synthesizer |
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