MATLAB Simulation of Phase-Locked Loop (PLL) Principle
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This is a MATLAB simulation program developed based on the principle of phase-locked loops (PLL). A phase-locked loop is a control system that compares a clock signal with an input signal and adjusts the frequency and phase of the clock signal to synchronize it with the input signal. Consequently, PLLs are widely used in communication systems, digital signal processing, measurement applications, and other fields. In this simulation program, we implemented a PLL model using MATLAB with comprehensive code annotations. The simulation employs key MATLAB functions such as phase detectors, loop filters, and voltage-controlled oscillators (VCOs) to demonstrate the complete PLL working cycle. Additionally, we provide simulation result graphs to facilitate better understanding of the operational principles of phase-locked loops, including phase error convergence and frequency tracking performance.
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