This paper introduces the theory of the phase-locked loop (PLL) and the direct digital synthesis (DDS), a method to improve the precision of DDS and reduce its phase truncation error is also given.
介绍了锁相环(PLL)技术和直接数字式频率合成(DDS)技术的基本工作原理，给出了一种提高DDS输出频率精度及减小其相位截断误差的方法。
The design and implementation of quadrature waveform generator are described based on the AT89C52, phase-locked loop(PLL) and switched-capacitor filter(SCF).
描述了基于AT89C52单片机、锁相环和开关电容滤波器的正交信号发生器的设计和实现方法。
Phase-locked loop (PLL) has been applied in many fields.
锁相环在很多领域都得到了广泛应用。
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。
The phase jitter of output signal of the PLL( phase locked loop) frequency doubler is analyzed.
定量分析了数字式锁相倍频器输出信号的相位抖动。
We present a design for an adaptive gain phase-locked loop (PLL) that features fast acquisition, low jitter, and wide tuning range.
提出了一种快捕获，低抖动，宽调节范围的增益自适应锁相环的设计。
It USES a high precision digital phase-locked loop (PLL) to accurately recover the Synchronous reference information of raw cloud-cover image data collected by the geostationary satellite.
它用高精度数字锁相环，精确地恢复地球同步气象卫星采集的原始云图数据的同步基准信息。
The industrial grating signals can be digital frequency multiplication with a phase-locked loop (PLL) controlled by a microcomputer.
用微型计算机控制锁相环(PLL)可对计量光栅信号进行数字倍频。
The digital very narrow-bandwidth Phase-Locked Loop(PLL) is designed and realized for the digital range and velocity measurement receiver.
本文正是为数字化测速测距接收机设计并实现全数字化超窄带锁相环。
It also give an improved method for PLL (phase locked loop) to extract coherent carrier.
本文还对相干载波提取中的锁相环提出了一种改进方法。
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。
The basic principle of phase locked loop (PLL) has been introduced, and the transmission function of the phase noises of every part of PLL has been analyzed.
介绍了锁相环的基本原理，分析了锁相环各部分电路相位噪声的传递函数。
A novel all-digital phase locked loop (PLL), applied to the carrier synchronization of communication systems, is designed.
设计了一种用于通信系统载波同步的新数字锁相环。
A novel multi-layer Charge-Pump Phase-Locked Loop (CP-PLL) behavioral model is presented in this paper.
提出了一种全新的电荷泵锁相环的行为级建模方法。
FIG. 1 illustrates an example of a phase-locked loop (PLL) that can include techniques of the present invention.
图1图示说明可以包括本发明技术的相锁环(PLL)的示例。
Now the full integrated PLL (phase locked loop) chip is used widely in radio frequency circuit.
全集成锁相环芯片目前在射频电路中应用很广泛。
The stability of the system is analyzed by small-signal, the results shows that the double integrator close-loop is a Phase-Locked-Loop (PLL) essentially.
采用小信号的方法对其稳定性进行分析。分析结果表明这种结构本质上具有锁相环的功能。
The phase locked loop (PLL) frequency synthesizer for digital tuning system(DTS), which is used in DTS of car radio receiver, is presented.
针对一个汽车音响收音数字调谐系统的实例，介绍了一种广播用双波段锁相环频率合成芯片的设计方法。
Then we briefly explain the basic theory of Phase Locked Loop (PLL) and the basic characteristic of its components.
然后从相位角度分析了锁相环环路模型，给出了相位传递函数；
With the signal from the master clock, the slave clock is able to recover an accurate local clock signal using a Clock Recovery Phase Locked Loop (PLL).
从时钟利用主时钟发来的时钟信号，通过数字锁相环恢复出本地时钟信号。
With the signal from the master clock, the slave clock is able to recover an accurate local clock signal using a Clock Recovery Phase Locked Loop (PLL).
从时钟利用主时钟发来的时钟信号，通过数字锁相环恢复出本地时钟信号。
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