Phase-Locked Loop (PLL) Simulation

This program is developed in MATLAB to simulate the performance of phase-locked loops (PLLs), which are essential circuits that generate output signals coherent with input signals, widely applied in wireless communication and digital signal processing systems. The implementation incorporates modular code architecture allowing users to configure PLL parameters through structured input interfaces. Key algorithmic components include phase detector implementations (e.g. multiplier-based or XOR-type), loop filter designs (proportional-integral controllers), and voltage-controlled oscillator (VCO) modeling with configurable gain factors. The program features real-time waveform analysis capabilities extracting amplitude, phase, and frequency characteristics from generated signals. Additionally, it supports multiple PLL topologies through switchable feedback configurations (integer-N/fractional-N synthesis) and adaptive control algorithms (Bang-Bang/PID controllers), enabling optimization for diverse applications like clock recovery or frequency modulation through parameterized simulation blocks.