FIELD: radio engineering, communication.
SUBSTANCE: apparatus for generating quadrature amplitude-shift keyed signals includes a driving generator, three phase changers, eight voltage switches, six voltage dividers and an adder, the inputs of which are connected to the outputs of all voltage dividers.
EFFECT: reconstructing a transmitted combination of four bits if reception of one of the voltage vectors transmitted in pairs is possible only up to a sign.
3 cl, 3 dwg
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