DEVICE FOR SEPARATING TRANSMISSION SIGNALS IN DUPLEX COMMUNICATION SYSTEM Russian patent published in 2004 - IPC

FIELD: electrical communications; duplex signal transmission over communication channels. SUBSTANCE: device has among other components subtracter, first memory unit, first attenuator and first (M 1) additional memory units, second adder and third attenuator forming forward structure, second attenuator, second (M 1) additional memory units, third adder, fourth and fifth attenuators forming inter-reversing fiber-optic communication structure. Cascaded connection of forward structure and fiber-optic communication structure for echo signals forms wave trap and for signals received, forward conductor with gain factor equal to unity. EFFECT: enhanced noise immunity of messages received. 1 cl, 10 dwg