Patent ID: 8417194
Filing Date: 2013-04-09
Classification: H03F

Abstract:
1. A compensation device applied to a power amplifier, the compensation device comprising: a power signal generator, arranged to provide a first power input signal with a fixed amplitude intensity to the power amplifier, and arranged to provide a second power input signal with different amplitude intensities to the power amplifier, wherein the power amplifier generates a first power output signal according to the first power input signal, and generates a second power output signal according to the second power input signal; a receiving circuit, arranged to receive a first receiving signal and a second receiving signal, wherein the first receiving signal is corresponding to the first power output signal, and the second receiving signal is corresponding to the second power output signal; a gain detecting circuit, coupled to the power signal generator and the receiving circuit, arranged to detect a predetermined gain of the power amplifier by means of the first power input signal and the first receiving signal; and a pre-distortion determining circuit, coupled to the power signal generator, the receiving circuit, and the gain detecting circuit, arranged to determining a plurality of pre-distortion amplitude values and a plurality of pre-distortion phase values of the power amplifier by means of the predetermined gain, the second power input signal and the second receiving signal.