METHOD OF DEMODULATION OF AMPLITUDE-MODULATED RADIO-FREQUENCY SYGNALS AND DEVICE TO THIS EFFECT Russian patent published in 2009 - IPC H03D1/00 

FIELD: communication means.

SUBSTANCE: invention pertains to radio communication and may be used for demodulation of amplitude-modulated signals. To reach the technical result, amplitude-modulated signal is supplied to demodulator from tandem of four-pole unit, two-pole nonlinear element, low frequency filter, in-series connected clarifier and low frequency load performing operations of the division of the range of the amplitude-modulated signals into low and high frequency components, separation of the low-frequency component and elimination of the constant component, whereat nonlinear element is switched between the four-pole unit and high-frequency load into the transverse circuit, low-frequency filter is switched to the high-frequency load, four-pole unit is made of the number of reactive impeders, not less than two, parametres values whereof are selected in terms of security of the required value of the depth of the amplitude modulation of the set amplitude-modulated signal at high-frequency load.

EFFECT: improved noise-immunity.

2 cl, 3 dwg