METHOD OF GENERATING A PHASE-SHIFT KEYED SIGNAL USING ADDITIONAL BINARY PHASE-SHIFT KEYING Russian patent published in 2025 - IPC H03K3/00 H04B1/00 

FIELD: radio engineering.

SUBSTANCE: harmonic signal is generated. Phasing of pseudorandom sequences intended for synchronization (SS) and transmission of information (IS), which is phase-keyed in accordance with a bit information sequence. From the generated signal, a second signal is generated, shifted relative to it by 90°. Signals are phase-keyed with pseudorandom sequences (PRS). Signal fragments, which are phase-keyed, contain an even number of periods of the carrier frequency. Each signal is also phase-keyed so that the phase difference of the signals forming the n-th and (n+1)-th periods is equal to π. Generated signals are summed; the obtained signal is amplified and radiated into space. In the receiving device, copies of the PRS are formed, taking into account the fact that the signal is additionally phase-keyed, and they are phased with the PRS of the signal. After synchronization, the input signal is multiplied with reference signals. Signals are then filtered by frequency band and converted to digital form. Obtained readings are summed up.

EFFECT: high noise immunity of communication equipment using a phase-shift keyed signal under conditions of interference.

1 cl, 5 dwg, 1 tbl