FIELD: communication.
SUBSTANCE: invention relates to a superheterodyne receiver of composite phase-shift keyed signals with double frequency conversion. Receiver has series-connected antenna, input circuit and radio frequency amplifier, series-connected first heterodyne, first mixer and first first-intermediate frequency amplifier, series-connected second heterodyne, second mixer, second intermediate frequency amplifier, demodulator and an output circuit whose output is output of receiver, two narrow-band filters, three phase inverters, four adders, two 90° phase changers, a multiplier, an amplitude detector, a switch, a third mixer and a second first intermediate frequency amplifier.
EFFECT: technical result consists in improvement of selectivity, noise immunity and reliability of receiving composite phase-shift keyed signals.
1 cl, 4 dwg
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