US 12,113,492 B2
Power amplification apparatus, beamforming system, transmitter, and base station
Qianfu Cheng, Chengdu (CN); and Guangjian Wang, Chengdu (CN)
Assigned to HUAWEI TECHNOLOGIES CO., LTD., Shenzhen (CN)
Filed by HUAWEI TECHNOLOGIES CO., LTD., Shenzhen (CN)
Filed on Sep. 3, 2021, as Appl. No. 17/466,334.
Application 17/466,334 is a continuation of application No. PCT/CN2020/077658, filed on Mar. 3, 2020.
Claims priority of application No. 201910161257.8 (CN), filed on Mar. 4, 2019.
Prior Publication US 2021/0399697 A1, Dec. 23, 2021
Int. Cl. H03F 3/24 (2006.01); H03F 1/02 (2006.01); H04B 1/04 (2006.01)
CPC H03F 3/24 (2013.01) [H03F 1/0227 (2013.01); H04B 1/0475 (2013.01); H03F 2200/102 (2013.01); H03F 2200/451 (2013.01); H04B 2001/0425 (2013.01)] 16 Claims
OG exemplary drawing
 
1. 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.