MULTI-CHANNEL DEVICE FOR SEPARATING WIDEBAND SIGNAL FROM INTERFERENCE Russian patent published in 2007 - IPC H04B1/10 

FIELD: radio communications, possible use for receiving wideband signals under conditions of narrowband and impulse interferences.

SUBSTANCE: device contains m parallel channels, containing narrowband filters, channel amplifiers, detectors, comparison circuits, controllable amplifiers, non-inertial limiters, phase shifters. Introduced to device are n input and n output mixers, heterodyne block, impulse generator, n adders, n phase shifters. Introduced to each channel are input and output commutators, control circuit, threshold device, key. Input and output of input commutator of channel are connected respectively to outputs of input mixers and to input of narrowband filter. Input and output of output commutator are connected respectively to output of phase shifter and through adder - to inputs of output mixers. And outputs through phase shifters are connected to adder. Outputs of comparison circuits in channels through threshold element, key, comparison circuit are connected to controlling inputs of input and output commutators. Outputs of heterodyne block are connected respectively to heterodyne inputs of input and output mixers. Output of amplification and transformation block is connected to inputs of input mixers. Output of impulse generator is connected to inputs of keys.

EFFECT: decreased number of device channels while maintaining high efficiency of separation of signal from interference.

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