Amplifying apparatus, communication apparatus and amplification method

A communication apparatus comprising:

• a decomposer that decomposes an input signal into two signals having different phases;
• two amplifiers that amplify the decomposed two signals, respectively;
• a combiner that combines output of the amplifiers;
• a controller that controls at least one of waveform information of at least one of the two signals and an operating state of the two amplifiers such that an output characteristic of the combiner matches a desired characteristic;
• and
• a transmitter that transmits the combined signal.

An amplification method comprising:

• decomposing an input signal into two signals having different phases;
• amplifying the decomposed two signals by two amplifiers, respectively;
• combining output the amplifiers by a combiner;
• and
• controlling at least one of waveform information of at least one of the two signals and an operating state of the two amplifiers such that an output characteristic of the combiner matches a desired characteristic.