lock loop 锁环 loop lock 【医】 环阻 phase lock 锁相 phase line lock 行同步锁相 automatic phase control loop 自动相位控制回路 相似单词 lock v. 1.(用锁)锁上,被锁住 2.[T] 把...锁起来 3.(使)固定,卡住,塞住 4.[T] 陷入,卷入(困境,争论,争执等) 5.[T] 被紧紧抓住(或抱住)...
本人最近在Simulink中设计控制回路时,又对这个初级模块的原理产生了兴趣,回顾网上一些网友的解释,发现不少存在问题。因此,重新梳理了一下思路,希望以一种大家容易理解、相对较为正确的角度来理解、实现锁相环(PLL)的设计。当然,也能通过这种方式来让高知把关,确保个人理解的正确性。 1 锁相环的外部功能 锁相环的输...
The center frequency of the VCO is critical for good DPLL performance when using the XOR gate with RC loop filter. If the center frequency, fcenter , of the VCO (i.e., VinVCO = VDD/2) does not match twice the inputdata rate, the DPLL will lock up at a phase different from /2 ...
Figure 1 shows the general form of a charge pump integer divide phase locked loop (a very common topology used for frequency synthesis). 图1指出了整数分电流泵锁相环的一般形式(用于频率合成技术的很常见的拓扑结构)。 bbs.21ic.com 2. Because of the better spur control than DDS, the Phase Loc...
Figure 4. A PFD out of phase and frequency lock. Figure 5. Phase frequency detector, frequency, and phase lock. Returning to our original example of the noisy clock that requires cleaning, the phase noise profile of the clock, free running VCXO, and closed-loop PLL can be modeled in ADIs...
Phase Lock Loop Stability Analysis:锁相环的稳定性分析 热度: 百科名片 PLL原理框图 锁相环(phase-lockedloop)为无线电发射中使频率较为稳定的一种方法,主要有VCO(压控振荡器)和PLLIC,压控振荡器给出一个信号,一部分作为输出,另一部分通过分频与PLLIC所产生的本振信号作相位比较,为了保持频率不变,就要求相位...
设计PLL模块时，我采用了一种直观的方法来阐述其原理。首先，通过坐标变换，将三相信号投影到参考轴上，并利用派克变换将其转换为新的二维旋转正交坐标系dq轴上的分量。接下来，设计控制规则以确保与三相旋转信号同步的旋转dq坐标系相对静止。通过负反馈环控制，调整dq角频率，实现与A相的同步。PLL功能实现...
PHASE LOCK LOOPPROBLEM TO BE SOLVED: To provide a phase lock loop capable of reducing a circuit area with the reduction of an oscillation frequency error.ITO TOMOHIKO伊藤 朋彦
An All-Digital Phase-Locked Loop with 50-Cycle Lock Time Suitable for High-Performance Microprocessors(Special Issue on the 1994 VLSI Circuits Symposium) A frequency-synthesizing, all-digital phase-locked loop (ADPLL) is fully integrated with a 0.5 μm CMOS microprocessor. The ADPLL has a 50-cy...
High performance phase-locking of wide linewidth semiconductor lasers by optical injection phase-lock loop A new phase-locking technique, the optical injection phase-lock loop (OIPLL), is reported which gives low values of phase error variance (0.006 rad(2), 500... AC Bordonalli,C Walton,AJ...