The zero-crossing phase-lock loop: results from discrete dynamical theory Original Research Article

The zero-crossing discrete phase-lock loop (ZC-DPLL) is a key component of many digital receivers. Yet prior analyses have overlooked the impact of its nonlinearities. Dynamical systems theory immediately provides a more complete picture of ZC-DPLL operation. We also find that the ZC-DPLL displays unusual features derived from its odd symmetry and bimodality.