Simulation of nonlinear models of modified BPSK Costas loop for non sinusoidal waveforms in MatLab Simulink

A modification of BPSK Costas loop, where low pass filters are applied separately from the loop, is considered. Such modification of the loop can work with non-sinusoidal signals or with some special phase detectors instead of multipliers. In this paper a general approach to the analytical computation of phase detector characteristic of the loop for general periodic signal waveforms is demonstrated and an effective simulation of the loop in signal´s phase space is considered.