SERIAL MULTIPLE-FREQUENCY SIGNAL RECEIVER Russian patent published in 2001 - IPC

FIELD: digital-signal reception by broad-band systems with serial multiple-frequency signals. SUBSTANCE: newly introduced in receiver that has input unit, set of quadrature correlates, quadrature shaper, clock generator, pseudorandom exchange generator, standard-frequency sensor, threshold-signal shaper, and computing unit are multiplexes, mode-of operation switch, adaptive threshold voltage generator, delay unit, interface unit, serial-to- parallel code converter, memory device, clock shaper, mode command shaper, controlled delay unit, NOT gate, and also comparison unit, switch, and fixed-constant multiplier in each quadrature correlator. All these pieces of equipment are adequately connected and their introduction has made it possible to receive pseudorandom multiple-frequency signals including their delay in propagation path. EFFECT: improved noise immunity. 5 cl, 3 dwg