MATLAB Implementation of Digital Phase-Locked Loop (DPLL)

I have developed a digital phase-locked loop implementation in MATLAB, complete with simulated test data. The digital phase-locked loop is a crucial circuit widely used in applications such as clock recovery, frequency synthesis, and signal demodulation. Mastering digital PLLs is an essential skill for electronics engineers. The implementation includes key PLL components: phase detector implementation using multiplier-based approaches, loop filter design with programmable bandwidth control, and numerically controlled oscillator (NCO) with frequency tuning capability. The code demonstrates parameter tuning for lock range acquisition and stability analysis. If you're not yet familiar with digital PLL principles and applications, I recommend referring to "Principles and Applications of Digital Phase-Locked Loops" textbook. This comprehensive resource covers fundamental theories, design methodologies, implementation techniques, and practical application scenarios. Studying this material will provide deeper understanding of digital PLLs, enabling more effective real-world applications in your engineering projects. The MATLAB code includes commented sections explaining algorithm choices, stability considerations, and performance optimization techniques for different operational scenarios.