H - Electricity – 04 – M
Patent
H - Electricity
04
M
H04M 1/73 (2006.01) H04Q 7/32 (2006.01)
Patent
CA 2264446
A compact power supply apparatus is favorable for a reduction in size of a mobile communication terminal having a transmitter and baseband signal processor, a transmitter and a power amplifier. The power supply apparatus includes a DC/DC converter for converting a DC voltage from a battery. In a reception mode of the mobile communication terminal, the power supply apparatus regulates the DC voltage converted by the DC/DC converter and supplies the regulated DC voltage to the receiver and baseband signal processor. In a transmission mode, the power supply apparatus converts the DC voltage converted by the DC/DC converter to a DC voltage corresponding to a transmission AGC (Automatic Gain Control) voltage determined depending on a transmission power and supplies the converted DC voltage to the receiver and baseband signal processor, the transmitter and the power amplifier. Since the power supply apparatus uses a single DC/DC converter and adaptively varies the output voltage of the DC/DC converter according to the transmission power in the transmission mode, it is favorable for a reduction in size of the mobile communication terminal and for a reduction in power loss of the voltage regulators and the power amplifier, thereby maximizing the power efficiency and extending the battery life.
R. William Wray & Associates
Samsung Electronics Co. Ltd.
LandOfFree
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