METHOD TO DEMODULATE SIGNALS OF RELATIVE PHASE MODULATION AND DEVICE FOR ITS REALISATION Russian patent published in 2011 - IPC H04L27/22 

FIELD: information technologies.

SUBSTANCE: demodulator of signals of relative phase modulation (RPM), comprising serially connected filter (1) and first unit of sign identification (2), two correlators (3, 4), two strobing units (5, 6), reference oscillation generator (9), phase changer (10), the second and third units of sign identification (11, 12), clock pulse generator (13), serially connected unit of phase estimation (14) and solving unit (7), output of which is the output (8) of demodulator, in its turn the unit of phase estimation (14) consists of the first and second inverters (15, 16), fourth and fifth units of sign identification (17, 18), commutator (19), the first and second units of module calculation (20, 21), comparison unit (22), the first generator of constants (23) and the first summator (24), solving unit (7) consists of serially joined unit of delay (25), the third inverter (26), the second summator (27), the third unit of module calculation (28), the third summator (29), the sixth unit of sign identification (30), of the second generator of constants (31), additionally includes serially connected the fourth summator (32), the seventh unit of sign identification (33), the fourth inverter 34, unit of logical multiplication (35), outlet of which is the output of solving unit (7). Proposed method is realised through operation of above-described device.

EFFECT: improved noise immunity of demodulation of relative phase modulation signals by elimination of effect of rupture in dependence of F_n phase estimate on phase of demodulated signal φ.

2 cl, 2 dwg