DEVICE AND METHOD FOR INCREASING OUTPUT EFFICIENCY OF MOBILE COMMUNICATION TERMINAL

摘要

The present invention relates to a device and method for increasing the output efficiency of a mobile communication terminal. The device comprises: a supply modulator for generating electricity by modulating an envelope component of an input signal; and a power amplifier for amplifying a phase component of the input signal by using the electricity as a power source for a collector/drain. The supply modulator comprises: a DC-DC converter for raising a voltage of a battery of the device; a voltage regulator for determining an output voltage using the voltage raised by the DC-DC converter; and a switching regulator for determining an output current using battery power of the device.