PHASE-SENSITIVE AMPLITUDE-BASED MODULATOR-DEMODULATOR Russian patent published in 2007 - IPC H03K7/02 H03K9/02 H03D3/18 

FIELD: automatics and analog transformation equipment.

SUBSTANCE: device contains two input buses (1,2), opening (3) and closing (4) keys, inverter (5) of sign, comparator (6), resistors (7-10, 13), operational amplifier (11), capacitor (12), output (14). Operational amplifier (11) and parallel-coupled capacitor (12) and resistor (13) constitute a filter, which prevents passage of high frequency parasitic pulsations to output of device. Device is capable of operating in both modulator mode and demodulator mode.

EFFECT: simplification of device and reduction of level of parasitic pulsations in output signal.

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