Brief description of the phase modulation by a binary signal and the device implementing this process

摘要

Process and device for phase modulation or the modulating signal is a binary signal. / p & & p & in order to be able to to separate by filtering the useful signal of the stray signals crees during the modulation, a signal of the form cos: ot ph (t) is a product or o is a constant, t the time and ph (t), a quantity representative of the phase modulated. This signal is subject to a signal of the form sin α or o is a constant; the signal obtained is filtered in a band pass filter - in order to extract the useful signal, the strip of frequencies is centered on: o2p2palors that the parasitic signals, the more bothersome are constituted by a signal to 1 / p