Patent ID: 8406706
Filing Date: 2013-03-26
Classification: H03F,H03G,H04B

Abstract:
1. A mobile terminal comprising: a power amplifier module having a plurality of operative modes and configured to amplify a power strength of an RF signal; a modem configured to provide the RF signal to the power amplifier module and to control the plurality of operative modes; a power detecting unit configured to detect the power strength of the RF signal output from the power amplifier module and to output a reference voltage; and a DC/DC converter configured to adjust the reference voltage according to a gain corresponding to each of the plurality of operative modes of the power amplifier module and to supply a driving voltage to the power amplifier module, wherein the modem comprises an operative mode control unit configured to determine the plurality of operative modes according to ranges of an output of the power amplifier module, wherein the ranges of the output of the power amplifier module are divided according to abrupt changes in current consumption, and wherein a size of the gain corresponding to each of the plurality of operative modes increases as the output of the power amplifier module moves toward a lower range from a higher range.