This book guides engineers through the use of the Costas loop, which can be considered an extension of the better known Phase-locked loop. The author discusses all three variants of the Costas loop and describes their dynamic behavior, using newly developed mathematical models. Step-by-step design procedures and Simulink models are included for every type of Costas loop. Â These models enable designers to test circuits prior to building breadboards or prototypes, accelerating the design process considerably.