Patent ID: 8013676
Filing Date: 2011-09-06
Classification: H03F

Abstract:
1. A high-efficiency power amplifier comprising: a drive amplifier; a final power amplifier; a first digital pre-distortion correction (DPD) module configured to pre-distort nonlinear characteristics of a drive signal output by the drive amplifier, output a first signal having nonlinear characteristics contrary to the nonlinear characteristics of the drive signal, and correct the nonlinear characteristics of the drive signal, wherein the drive signal is output by the drive amplifier for driving the final power amplifier; and a second DPD correction module connected to the first DPD correction module in series, and configured to pre-distort nonlinear characteristics of an amplified signal output by the final power amplifier, output a second signal having nonlinear characteristics contrary to the nonlinear characteristics of the amplified signal, and correct the nonlinear characteristics of the amplified signal.