DEVICE FOR SUPPRESSING NARROWBAND INTERFERENCE Russian patent published in 2006 - IPC H04B1/10 

FIELD: radio communications engineering, possible use for receiving broadband signals on background of narrowband and impulse interference.

SUBSTANCE: device contains, connected serially: broadband filter, transformer and n channels, each one of which contains, connected serially, narrowband filter, detector, amplifier, comparison block, amplifier being adjusted, another input of which is connected to input of detector, first limiter and phase shifter. Outputs of phase shifters of n channels are connected to inputs of adder, to output of which serially connected second limiter and output broadband filter are connected. First input of comparison block of each channel is connected to inputs of block for selecting minimal signal, output of which is connected to another input of frequency transformer and to second inputs of comparison blocks. In accordance to invention, each channel additionally contains low frequency filter, threshold block, block AND, block for selecting maximal signal, all serially connected between output of detector and first input of comparison block. Another input of block for selection of maximal signal is connected to output of detector. Serially connected are, shared between channels, power block, integrator and threshold block, output of which is connected to other inputs of channel AND blocks.

EFFECT: increased reliability.

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