MATLAB Implementation of Phase-Locked Loop (PLL) with Prototype Verification

This MATLAB program provides a comprehensive implementation of a phase-locked loop system, featuring core components implemented through dedicated MATLAB functions. The code includes a phase detector algorithm that compares input and feedback signals, a loop filter design (typically using PID or lead-lag configurations) for noise reduction and stability, and a voltage-controlled oscillator (VCO) module with adjustable frequency response. The implementation has undergone rigorous prototype validation, ensuring reliable performance in real-world synchronization scenarios. The code structure employs MATLAB's signal processing capabilities, utilizing functions like atan2 for phase detection and filter design tools for optimal loop characteristics. The program features modular architecture with clear function separation, making it easily adaptable for various PLL applications such as frequency synthesis, clock recovery, and demodulation processes. Designed with user accessibility in mind, the code includes comprehensive comments and parameter adjustment sections, allowing users to customize PLL bandwidth, damping factors, and lock range specifications. The implementation demonstrates efficient use of MATLAB's discrete-time simulation environment for accurate PLL behavior analysis. This verified PLL solution offers significant value for synchronization systems, providing optimized performance and operational efficiency. Interested users can download the complete MATLAB source code for immediate integration into their synchronization projects.