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

FIELD: radio communication.

SUBSTANCE: in method and device for demodulation (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, non-linear element, low-pass filter, PM signal is converted to APM signal by means of supply of this signal to the right or left slope of dependence of module of one of complex elements of resistance matrix 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. As non-linear element three-pole element is used, which is connected between source of RF PM signals and quadripole or between quadripole and introduced HF load according to the circuit with common emitter, base or collector. Quadripole is arranged from resistive dipoles, at least two, parameters of which are selected based on condition of provision of required depth of amplitude modulation of APM signal.

EFFECT: higher noise immunity of receiver.

11 cl, 9 dwg