TRANSMITTING APPARATUS OF GSM/TD-SCDMA DUAL MODE TERMINAL

摘要

A transmitter of a GSM/TD-SCDMA dual mode terminal is provided to reduce power consumption of a mobile terminal by using a C-class power amplifier with excellent power efficiency. A GSM transmitting unit includes a GSM baseband unit(60) for outputting a GSM baseband signal and a GSM transmission ASIC(50) for converting the baseband signal into a service frequency. A TD-SCDMA transmitting unit includes a TD-SCDMA baseband unit(80) for outputting a TD-SCDMA baseband signal and a TD-SCDMA transmission ASIC(70) for converting the baseband signal into a service frequency. A power amplifier module(40) connected to the GSM transmission ASIC(50) and to the TD-SCDMA transmission ASIC(70) amplifies a frequency-converted signal to a signal of a desired size. An antenna switch block(10') selects a transmission signal outputted from the power amplifier module(40) and transmits it to an antenna.