在通信领域中，锁相环频率合成器起着越来越重要的角色。
In the field of communications, PLL synthesizers playing an increasingly important role.
在锁相环频率合成器中，双模前置分频器是一个速度瓶颈。
In PLL frequency synthesizers, dual modulus prescaler is a bottleneck in achieving a higher operation speed.
本文叙述了一个用微机控制的锁相环频率合成数字调谐系统的原理和设计。
In this paper the principle and design of a microcomputer-controlled PLL frequency synthesis digit tuning system is discussed.
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 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.
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。
The phase locked loop (PLL) frequency synthesizer for digital tuning system(DTS), which is used in DTS of car radio receiver, is presented.
同时，建立了电荷泵锁相环频率合成器噪声模型，为高阶、低噪声电荷泵锁相环频率合成器的设计提供理论依据。
The noise model CPPLL frequency synthesizer is also established in order to provide theory of designing high order, low noise and high performance CPPLL frequency synthesizer.
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。
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.
采用高精度的直接数字频率合成（DDS）和数字锁相环技术，实现了高频率跟踪精度。
DDS and digital phrase-lock technology have been applied in FPGA to improve the accuracy of frequency tracking.
利用锁相环的倍频、分频等频率合成技术，可以获得多频率、高稳定的振荡信号输出。
Using PLL synthesis technology such as frequency multiplication and frequency division, may obtain the multi-frequencies, the high stable oscillator signal output.
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。
In the electronic instrumentation aspect, the phase-locked loop in instruments and so on in frequency synthesizer and phase meter played the vital role.
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