TRANSMISSION APPARATUS AND TRANSMISSION METHOD

摘要

A transmission apparatus comprises: a polar modulator (601) that generates a power supply modulation signal and also generates RF signals of a plurality of carrier frequency bands to be transmitted; a power amplifier (603) that amplifies the RF signals from the polar modulator (601); and a power supply modulator (602) that modulates the power supply terminal of the power amplifier (603) by use of a signal obtained by amplifying the power supply modulation signal from the polar modulator (601). The power supply modulation signal is established by use of a function using, as an argument, the powers of the RF signals of the carrier frequency bands outputted from the power amplifier (603).