The invention relates to a
distortion compensating apparatus, a
wireless communication apparatus, and a
distortion compensating method. The
distortion compensating apparatus comprises the following units: an information measuring unit which measures a distortion component and an
electric power component based on a
radiation signal; a compensation coefficient calculating unit which calculates a compensation coefficient based on the distortion component and the
electric power component; a
signal transmitting unit which outputs a
signal corrected by the compensation coefficient as a transmission signal; a signal converting unit which converts the transmission signal into a
high frequency signal; an amplitude separating unit which amplifies the
high frequency signal and separates a portion thereof as a signal to be fed back; a feeding-back unit which processes the separated portion and outputs the result as a feedback signal to the information measuring unit; and an
electric power information extracting unit which outputs a portion of the
high frequency signal as the
radiation signal, extracts electric power information from the
radiation signal, and directly outputs the electric power information to the information measuring unit.