Patent ID: 7177659

Claim:
An apparatus for controlling output power of a mobile terminal comprising: a power amplifier module for amplifying power of a radio frequency signal, corresponding to a data signal, to a first power level; a transmitter for radiating the radio frequency signal at the first power level to a base station through an antenna of a mobile terminal; and a power compensating unit for measuring the first power level and generating a first difference value by comparing the first power level with a pre-set reference power value, wherein the power amplifier module controls an amplification factor for amplifying the power of the radio frequency signal corresponding to the data signal on the basis of the first difference value, and wherein the power compensating unit comprises: a feedback unit for measuring a second power level associated with the output power of the radio frequency signal radiated from the antenna; a controller for generating the pre-set reference power value in order to maintain a constant power level of the radio frequency signal radiated from the antenna; and a comparing unit for comparing the second power level with the reference power value generated by the controller.