General
Phase-locked loop

The phase-locked loop consists of three elements (figure 1 ). The function of the device is to slave the instantaneous phase ψ _s of a signal y _s delivered by an oscillator to the instantaneous phase ψ _e of an input signal y _e .

y _e and y _s are assumed to be sinusoidal or square wave signals, of instantaneous phase ψ _e and ψ...