FIELD: physics, communication.
SUBSTANCE: invention relates to reception of signals with frequency modulation. The LC-circuit with varicap as a tracking filter, as well as two diodes connected successively with the existing diodes forming a ring-balanced multiplier, are further introduced in the coherent detector of the FM signals.
EFFECT: reception of the signals with high noise coherent reception immunity of the FM signals, reducing of the harmonic distortion.
3 dwg
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