Introduces the basic principle of phase-locked loop and NE564 PLL circuit structure and properties, and the use of phase-locked NE564 demodulating circuit and phase-locked frequency circuit.
介绍了锁相环的基本原理和锁相环ne564的电路结构和性能，及其用ne564构成的锁相解调电路和锁相倍频电路。
Then presented the basic structure, phase model, frequency response and performance analysis for noise and spur, of phase locked loop (PLL).
然后介绍了锁相环(PLL)的基本结构、相位模型、频率响应、噪声及杂散性能。
In the process of signal digital intermediate-frequency received, digital down convertion, frequency tracking of carrier and phase locked loop are the keys.
在信号的中频数字接收过程中，数字下变频、载波频率与相位跟踪是设计的关键所在。
A novel Frequency and Phase Tracking Locked Loop (FPTLL) is proposed in this paper.
本文介绍了一种新型频率相位追踪锁定环路（FPTLL）的设计。
The phase- locked loop is one kind of control system which is able to achieve phase automatic lock, to compose frequency and to trace demodulation system.
锁相环路是一种能实现相位自动锁定的控制系统，主要用于频率合成及跟踪解调系统。
Furthermore, the working principle and phase noise of frequency-locked loop are analyzed and discussed in this paper.
给出了实验结果，并对锁频环的工作原理、相位噪声进行了分析和讨论。
The simulation results prove that the three-phase phase-locked loop can work well in disturbance situation and variable frequency system when the frequency of the inputs is variable.
并对相位突变和频率突变的情况进行了仿真研究，说明在相位和频率发生变动时三相锁相环仍能有效地锁定相位，能够满足系统变频的要求。
The phase-locked system is a closed loop automatic control system that can follow the frequency and phase of the input signals.
锁相系统是一个能够跟踪输入信号频率和相位的闭环自动控制系统。
Signal demodulation of automatic block with audio frequency shift modulated track circuits was implemented with phase-locked loop (PLL) technique and a singe chip microcomputer.
利用锁相环(LL)窄带跟踪特性，与单片机结合，实现自动闭塞系统移频信号解调。
High precise measuring and tracking of carrier frequency-deviation is necessary to the realization of a high performance phase locked loop in carrier recovery.
载波恢复中高精度的频偏检测与跟踪是高性能锁相位环路实现的必要条件。
The phase-locked loop frequency synthesizer is a kind of phase lock installment and it is a kind of separate gap frequency code generator with high stability frequency.
锁相环频率合成器是一种相位锁定装置，是一种频率稳定度较高的离散间隔型频率信号发生器。
The use of phase-locked loop technology makes the sampling frequency synchronously follow the signal frequency and improves the calculation accuracy of sampling data.
运用锁相环技术使采样频率同步跟踪信号频率，提高采样数据计算的准确性。
In the system, we adopt a balance channel frequency offset structure, phase locked IF tracking technique and opened loop precorrection.
在系统结构上采用了平衡通道频率补偿技术、中频锁相跟踪技术和开环预校正技术。
All digital Phase-Locked Loop frequency tracking and digital SPWM realization technology based on FPGA are emphasized in the research.
重点研究了基于FPGA的全数字锁相环频率跟踪技术和数字化SPWM实现技术。
Through debugging the hardware circuit of the Phase Locked Loop and writing the Single-Chip Processor program, a good performance frequency source is realized.
通过对锁相环硬件电路的调试和编写相关单片机控制程序，实现了一个性能较好的频率源。
In this dissertation, theory, model, design and implementation of charge pump phase locked loop frequency synthesizer are lucubrated.
本文围绕电荷泵频率合成器的理论、模型、设计和实现，进行了深入的研究。
The principle of voltage linear digital triggering of thyristor by EPROM is described and it is discussed to solve the frequency disturbance on digital trigger by phase locked loop .
描述了用EPROM实现晶闸管电压线性触发原理，讨论了用锁相环解决数字触发的频率扰动问题。
The chapter 4 discuss some question of the circuit using programmable device like digital phase locked loop and digital frequency multiplier, it can increase the way of circuit design.
第四章探讨了运用可编程技术设计数字锁相环和数字倍频器的相关问题，为以后电路设计拓展更多的方法。
Project 1 will be focused on the design and SPICE simulation of a high speed frequency divider for phase-locked loop applications.
专题1主要是讨论用于相锁迴路应用的高速分频器设计和SPICE模拟。
In the electronic instrumentation aspect, the phase-locked loop in instruments and so on in frequency synthesizer and phase meter played the vital role.
在电子仪器方面，锁相环在频率合成器和相位计等仪器中起了重要作用。
In the electronic instrumentation aspect, the phase-locked loop in instruments and so on in frequency synthesizer and phase meter played the vital role.
在电子仪器方面，锁相环在频率合成器和相位计等仪器中起了重要作用。
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