Patent ID: 6904267

Claim:
An amplifying device comprising: digital delay sections each for digital-delaying an input signal per carrier for a constant time; orthogonal modulating sections each for orthogonal-modulating the input signal per carrier; an up-convert section for converting each of the orthogonal-converted signals to a radio frequency; a coupling section for combining the radio frequencies of the respective carriers to produce a multi-carrier signal; carrier offset sections each for performing offset processing corresponding to a carrier frequency difference, relative to the input signal per carrier; an adding section for adding together the offset signals; a phase control section for executing a control of matching phases of the signals outputted from said up-convert section and the signals inputted to said adding section; a power detecting section for detecting a power value based on an output from said adding section; an amplifying section for amplifying the multi-carrier signal; a distributing section for distributing an output from said amplifying section; and a distortion compensating section for giving distortion compensation to the multi-carrier signal from said coupling section for canceling a nonlinear characteristic generated in said amplifying section, based on the power value detected in said power detecting section and an output from said distributing section.