公开(公告)号：US20240364283A1

公开(公告)日：2024-10-31

申请号：US18758896

申请日：2024-06-28

Applicant: Huawei Technologies Co., Ltd.

Inventor： Wei Zhou ,  Yao Qian ,  Xiaojun Pan ,  Weinan Li

IPC: H03F3/24

CPC classification number: H03F3/245 ,  H03F2200/102 ,  H03F2200/451 ,  H03F2200/78

Abstract: A power amplifier power supply circuit includes a first power supply circuit and a second power supply circuit that are connected in parallel, where the first power supply circuit and the second power supply circuit jointly supply power to a power amplifier by using a power supply end of the power amplifier. The second power supply circuit is configured to adjust a power supply voltage of the power amplifier at a symbol level. Power supply voltages output by the second power supply circuit and the first power supply circuit change based on a change of an envelope signal output by the power amplifier.