180° ABSOLUTE PHASE SHIFT KEYING DRIVER WITH DIGITAL SIGNAL Russian patent published in 2022 - IPC H04L27/227 H03H17/08 

FIELD: radio transmitters.

SUBSTANCE: invention relates to the field of radio transmitters. To achieve the effect, a generator for absolute phase shift keying by 180° with a digital signal (DS) generated from an analog speech signal (SS) is proposed. At the same time, a multivibrator, a phase-shifting chain (PLC), a four-input multiplexer, 8 normally open contacts, a frequency divider by 2, a two-input multiplexer and an ID-4 decoder are introduced into it. The output of the multivibrator is connected through the FSC to the 4 inputs of the multiplexer, where the pairs of the DS are replaced by phase shifts Δϕ_i and PSK by 180°, for which the outputs of the parallel code of the DS are connected to the address inputs of this multiplexer through 8 normally open contacts, and on the control inputs of each pair of neighboring contacts for their simultaneous closure is connected to the analog SS sampler multivibrator through a series-connected divider of its frequency by 2, a two-input multiplexer, and an ID-4 decoder.

EFFECT: maximizing radio communication immunity.

1 cl, 2 dwg, 1 tbl