DUAL PHASE MODULATION SIGNAL GENERATOR Russian patent published in 2022 - IPC H04L27/20 

FIELD: telecommunication; digital radio communication.

SUBSTANCE: invention can be used in phase-shift keyed signal transmission systems. Technical result is achieved by the fact that in the device for generating signals of double phase modulation to the inputs of the key device, respectively, signals from the source of the carrier harmonic oscillation are supplied (Fig. 2 U(t)), frequency of which is lower than oscillation frequency of the high-frequency oscillation generator, directly and through a phase changer, and a binary message source is connected to the control input of the key device (Fig. 2, the signal C(t)). At the output of the key device a phase-shift keying signal is generated, in which the duration of one oscillation period of the carrier harmonic oscillation source is equal to the duration of the information symbol of the binary message source. Generated signal (Fig. 2, the signal Z(t)) is transmitted to the control input of the phase modulator, to the high-frequency input of which a high-frequency oscillation generator is connected (Fig. 2, the signal V(t)), and the output of the phase modulator (Fig. 2 signal S(t)) is the output of the device.

EFFECT: formation of phase-shift keyed radio signals with smooth phase change on duration of information transmission, due to double phase modulation.

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