ADAPTIVE INTERFERENCE COMPENSATOR Russian patent published in 2000 - IPC

FIELD: radio engineering, various communication systems whose receiving and transmitting parts are located in close proximity. SUBSTANCE: antenna receives interference signals from transmitter located nearby which go into compensating adder to whose second input signal from same transmitter is fed, for instance, by way of direct feeder coupling controlled by amplitude-phase control circuit made of controlled attenuator and phase inverter so that it is equal in amplitude and opposite in phase to signal coming from receiving antenna. Signal from output of circuit of amplitude-phase control is phase-modulated and is summed with remainder of interference across output of compensator and is detected. After this synchronous detector determines phase of received signal. Integrator whose output is used to control controlled phase inverter is placed across output of synchronous detector. Signal from output of modulator is shifted through 90 degrees, is summed up with remainder of interference across output of capacitor, is detected and after this synchronous detector determines phase of received signal. Integrator whose output is used to control controlled attenuator is placed across output of synchronous detector. EFFECT: elimination of remainder of modulation in output signal. 1 dwg