SIGNAL DEMODULATOR USING SIXTEEN-POSITION AMPLITUDE-KEYING QUADRATURE KEYBOARD Russian patent published in 2006 - IPC H04L27/22 

Abstract RU 2286650 C2

FIELD: radio engineering.

SUBSTANCE: proposed signal demodulator using sixteen-position amplitude-keying quadrature keyboard (KAM-16) functions to generate code from optimal value in first reversing channel in case of deviation of transfer gains in each channel incorporating, among other things, series-connected phase detector, low-pass filter, and controlled amplifier counter; this code, being proportional to deviation of transfer gains in each channel, closes automatic gain control loop in cophasal and quadrature channels.

EFFECT: enhanced noise immunity due to enhanced precision of transfer gain identity maintenance in demodulator channels.

10 cl, 4 tbl

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RU 2 286 650 C2

Authors

Parkhomenko Nikolaj Grigor'Evich

Botashev Boris Mussaevich

Dates

2006-10-27Published

2005-02-17Filed