METHOD OF DEMODULATING PHASE-MODULATED AND FREQUENCY-MODULATED SIGNALS AND APPARATUS FOR REALISING SAID METHOD Russian patent published in 2014 - IPC H03J3/00 

FIELD: radio engineering, communication.

SUBSTANCE: method of demodulating phase-modulated and frequency-modulated signals is characterised by that the nonlinear element used is a three-pole nonlinear element; the four-terminal element is complex and consists of reactive and resistive elements; the three-pole nonlinear element is connected between a source of a phase-modulated or frequency-modulated signal and the input of the four-terminal element on a scheme with a common one of three electrodes; a high-frequency load is connected in a transverse circuit between the output of the four-terminal element and a lowpass filter.

EFFECT: wider field of physical realisability of change in the real and imaginary components of resistance of the signal source and the load, within which the required values of the modulus and phase of transfer constants are provided simultaneously.

2 cl, 4 dwg