Patent ID: 9584169
Date: 2017-02-28
CPC Classifications: H04B

Claim:
1. A radio transmitter comprising: a radio frequency signal source; a splitter which receives an input signal from said signal source and divides said input signal into two output signals along two signal paths; a pair of phase shifters, one phase shifter provided in one of said two signal paths which receives one of said output signals from said splitter and the other phase shifter in the other of said two signal paths which receives the other of said output signals from said splitter, each phase shifter receiving a phase control signal representative of different components of a modulation signal which shifts the phases of the outputs signals in the two signal paths, respectively; and a signal combiner which combines the output signals from the two signal paths to form a combined output signal prior to transmission, wherein said phase control signals are selected so that a vector-sum of the output signals in the two signal paths, when combined at said signal combiner, represents a desired amplitude and a desired phase shift of the combined output signal.