DEVICES FOR DEMODULATION OF AMPLITUDE-MODULATED RADIO-FREQUENCY SIGNALS Russian patent published in 2008 - IPC H03D1/12 

FIELD: radio communication.

SUBSTANCE: in device for demodulation of amplitude-manipulated and amplitude-modulated (AM) signals, which consists of cascade-connected quadripoles, non-linear element, low-pass filter, serially connected separating reservoir and low-frequency load, additionally as non-linear element dipole non-linear element is selected, which is connected between quadripole and high-frequency load into transverse circuit (parallel), low-pass filter is connected to high-frequency load, quadripole is made of at least three resistive dipoles, values of parameters of which are selected based on condition of provision of preset values of demodulator transfer coefficients modules in two conditions of non-linear element, which are determined with two extreme values of levels of input AM signal.

EFFECT: provision of preset values of modules of coefficients of demodulator transfer.

5 cl, 6 dwg