V2EX phase-locked

Phase-Locked

Definition / 释义

phase-locked(相位锁定的):指一个振荡器或信号源的相位(通常也包括频率)被控制系统锁住并与参考信号保持固定关系的状态;常见于锁相环(PLL)、通信同步、频率合成等场景。

Pronunciation / 发音

/fez lkt/(美)
/fez lkt/(英)

Examples / 例句

The oscillator is phase-locked to the reference clock.
振荡器与参考时钟实现了相位锁定。

Once phase-locked, the loop can track small frequency drift while maintaining a stable phase relationship with the incoming signal.
一旦进入相位锁定状态,环路就能在保持与输入信号稳定相位关系的同时跟踪微小的频率漂移。

Etymology / 词源

phase(相位) + locked(锁定的) 组成。该术语源于电子与通信工程:通过反馈控制把本地振荡器的相位“锁”到参考信号上,从而实现同步与稳定的频率/相位关系。

Related Words / 相关词

Literary Works / 文学作品

  • The Art of Electronics(Horowitz & Hill):在讨论频率合成与时钟系统时常涉及“phase-locked/PLL”等表述。
  • Phase-Locked Loops: Design, Simulation, and Applications(Roland E. Best):专门论述锁相环原理与应用,频繁使用“phase-locked”。
  • IEEE 通信与电路相关论文(如 IEEE Journal of Solid-State CircuitsIEEE Transactions on Communications):在载波同步、时钟恢复等主题中常出现“phase-locked”。
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