ACOUSTO-OPTICAL RECEIVER Russian patent published in 2012 - IPC H04B10/06 

FIELD: physics.

SUBSTANCE: acousto-optical receiver has receiving antennae 1 and 2, a frequency converter 3, heterodynes 4 and 5, mixers 6 and 7, intermediate frequency amplifiers 8, 9 and 42, multipliers 10, 12, 25, 26, 34, 35, 50, 54, 58, 59, 64, 65, 70, 71, 76 and 77, narrow-band filters 11, 13, 27, 36, 51, 55, 60, 66, 72 and 78, correlator 14, threshold unit 15, switches 16, 19, 45, 47, 49, phase detectors 17, 52 and 56, recording units 18, 53 and 57, a laser 20, a collimator 21, Bragg cells 22, 30, 31, 82, 85, 86, 89, 92 and 93, lenses 23, 32, 83, 87, 90 and 94, photodetector arrays 24, 33, 84, 88, 91 and 95, low-pass filters 28, 37, 61 and 67, phase inverters 38, 39, 68 and 69, subtractors 40, 62 and 74, and built-in intermediate frequency amplifiers 41 and 43.

EFFECT: wider range of operating frequencies without widening the frequency tuning range of heterodynes by using reception image channels.

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