Patent ID: 9564935
Date: 2017-02-07
CPC Classifications: H03F,H04B

Claim:
1. A composite transmitter, comprising: a signal component separating device which, upon receipt of an in-phase signal I and an orthogonal signal Q of a baseband modulation signal, is configured to generate a first composite signal in the form of a vectorial sum of a first power amplifier for power amplifying the first composite signal and a second power amplifier for power amplifying the second composite signal; and a power combiner for combining an output of the first power amplifier and an output of the second power amplifier to provide a composite power at its power combining end, the composite transmitter characterized in that the signal component separating device is further configured to differentiate instantaneous frequencies of the EIS and the main signal by restraining the phase of the EIS within a predetermined range centered about an arbitrarily given phase θ a first line length between a first input end and the power combining end of the power combiner and a second line length between a second input end and the power combining end of the power combiner are configured such that each of the first and the second lines is equivalent to an open circuit for the EIS when the lines are viewed from either output end of the power amplifiers.