COHERENT SIGNAL DETECTOR WITH DOUBLE ABSOLUTE PHASE MANIPULATION BY 180 °C Russian patent published in 2020 - IPC H03D3/02 

FIELD: radio engineering and communications.

SUBSTANCE: invention relates to receiving radio signals. To achieve the technical result, a coherent signal with double absolute phase manipulation (DPM) by 180° additionally, 2 signal regenerators are introduced, 2 additional signal multipliers, 2 first harmonic filters, 2 frequency detectors, 2 flip-flops, 1 amplitude-amplitude amplifier of the signal, wherein signal amplitude limiting amplifier is connected between fourth harmonic filter and frequency divider by 4, and to LPF of each channel are connected in series signal regenerator, input multiplier signals, frequency detector, trigger; frequency divider by 4 is made on a double D flip-flop, in which the direct output of the first D-flip-flop is connected to the second inputs of both multipliers of the in-phase channel through the first filter of the first harmonic, and the direct output of the second D-flip-flop is connected to the second inputs of both multipliers of the quadrature channel through the second input first harmonic filter.

EFFECT: increased noise immunity by 2 times due to use of double absolute phase manipulation for 180° instead of double relative phase manipulation, in which reverse operation due to introduced elements is eliminated.

1 cl, 3 dwg