Power amplification apparatus, beamforming system, transmitter, and base station

A power amplification apparatus, comprising:

• a power amplifier,
• a power supply, and
• a power supply modulator,
• wherein the power supply is connected to the power amplifier through the power supply modulator;
• the power amplifier is configured to amplify a first signal;
• the power supply modulator is configured to control, based on an envelope signal corresponding to the first signal, an operating voltage provided by the power supply to the power amplifier;
• and
• the power amplification apparatus is further configured to amplify a second signal, wherein the first signal is generated based on a first part of a target amplified signal, wherein the first part's amplitude falls within a preset amplitude range, and the second signal is generated based on a second part of the target amplified signal, wherein the second part's amplitude falls beyond the preset amplitude range.