Technical Blog

Basic Knowledge of Phase-Locked Loop (PLL) Design and Simulation

Phase-Locked Loop (PLL) is a frequency and phase synchronization technique commonly used in the field of communications. It utilizes feedback control principles to synchronize the clock output of a circuit with an external reference clock. When there are changes in the frequency or phase of the reference clock, the PLL detects these variations and adjusts the output frequency through its internal feedback system until both clocks are synchronized, resulting in a stable frequency signal.