METHOD FOR DEMODULATION OF PHASE-MODULATED RADIO FREQUENCY SIGNALS AND DEVICES FOR ITS REALISATION Russian patent published in 2008 - IPC H03D3/26 

FIELD: radio communication.

SUBSTANCE: in method and device of DM of phase-manipulated and phase-modulated (PM) signals that consists in the fact that DM is connected between source of radio-frequency (RF) PM signals and low-frequency (LF) load and is arranged from quadripole, dipole non-linear element, low-pass filter, PM signal is converted to APM signal by supply of this signal to the right or left slope of dependence of module of complex resistance or conductivity of non-linear element from frequency. With the help of non-linear element spectrum of APM signal is destroyed into HF and LF components. With the help of low-pass filter information radio frequency signal is separated, amplitude of which changes according to the law of change of phase of PM input signal. Dipole non-linear element is connected between source of RF PM signals and quadripole or between quadripole and introduced HF load into longitudinal or transverse circuit. Quadripole is arranged from at least three resistive dipoles, parameters of which are selected based on condition of provision of required values of amplitudes in two conditions and depth of amplitude modulation of APM signal.

EFFECT: higher noise immunity of receiver.

6 cl, 10 dwg