Radio transmitter for digital TRS Basestation, RF transmitter, and method of linearizing power amplifier

摘要

PURPOSE: A digital TRS(Trunked Radio System) base station transmission apparatus, wireless communication apparatus, and power amplification linearization method are provided to promote transmission signal quality by linearizing a power amplifier. CONSTITUTION: A combination apparatus(101) combines modulated signals of frequency channels. A power amplification unit(102) amplifies the combined and modulated signals outputted from the combination apparatus. The power amplification unit creates transmission signals. A demodulation unit demodulates a feedback signal created from the transmission signal in a frequency channel. The modulation unit creates the Cartersian feedback signal of the frequency channel.