High-efficiency power amplifier

A high-efficiency power amplifier comprising:

• a drive amplifier;
• a final power amplifier;
• a second multi-path control module;
• a fourth digital pre-distortion (DPD) correction module;
• and
• a second gating module;
• wherein the second multi-path control module is configured to receive multiple signals to be gated, including a drive signal having nonlinear characteristics output by the drive amplifier and an amplified signal having nonlinear characteristics output by the final power amplifier, and gate one of the drive signal and the amplified signal to output under control of the second gating module;
• wherein the fourth digital pre-distortion (DPD) correction module is configured to pre-distort the nonlinear characteristics of the one of the drive signal and the amplified signal gated by the second multi-path control module, output a signal having nonlinear characteristics contrary to the nonlinear characteristics of the drive signal, and correct the nonlinear characteristics of the drive signal if the drive signal is gated by the second multi-path control module, or output a signal having nonlinear characteristics contrary to the nonlinear characteristics of the amplified signal, and correct the nonlinear characteristics of the amplified signal if the amplified signal is gated by the second multi-path control module;
• and
• wherein the second gating module is configured to control the multiple signals to be gated by the second multi-path control module, wherein one of the drive signal and the amplified signal is gated into the fourth DPD correction module, wherein the second gating module is connected to the fourth DPD correction module and the second multi-path control module, and is controlled by the fourth DPD correction module.