公开(公告)号：US20240171127A1

公开(公告)日：2024-05-23

申请号：US18416149

申请日：2024-01-18

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Qiao LIU ,  Zhi ZHOU ,  Qianfu CHENG ,  Hua CAI

IPC: H03F1/02 ,  H03F3/24 ,  H04B1/04

CPC classification number: H03F1/0233 ,  H03F3/245 ,  H04B1/04 ,  H03F2200/105 ,  H03F2200/451

Abstract: A signal processing apparatus includes a power amplifier and a power supply modulator. The signal processing apparatus obtains a first non-linear coefficient, where the first non-linear coefficient indicates a non-linear characteristic of the power amplifier and a non-linear characteristic of the power supply modulator. The signal processing apparatus performs non-linear preprocessing and correction on a first baseband signal based on the first non-linear coefficient, to obtain a first intermediate signal and a second intermediate signal. The signal processing apparatus performs digital-to-analog conversion on the first intermediate signal and then performs up-conversion processing, to obtain a third intermediate signal. The signal processing apparatus performs envelope processing on the second intermediate signal, to obtain a first envelope signal. The signal processing apparatus modulates the first envelope signal by using the power supply modulator, to obtain a first control voltage signal.

公开(公告)号：US20230073967A1

公开(公告)日：2023-03-09

申请号：US17983549

申请日：2022-11-09

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Qianfu CHENG ,  Hua CAI ,  Guangjian WANG

IPC: H03G3/30 ,  H03F1/02 ,  H03F3/24

Abstract: This application discloses example multi-phase-based Doherty power amplifier control methods and apparatus An example method includes obtaining a baseband signal and generating two vector signals based on the baseband signal, where the two vector signals each include a phase signal and amplitude signal, and the two vector signals are non-orthogonal signals. Amplitude control signals of a target power amplifier are obtained based on quantization encoding of amplitude signals of the two vector signals, where the target power amplifier includes a main and power amplifier, and the main and auxiliary power amplifier each include a plurality of working cells. Phase control signals of the target power amplifier are obtained based on phase signals of the two vector signals. Based on the phase control signals and the amplitude control signals, a plurality of working cells in the main power amplifier and the auxiliary power amplifier to output power signals are controlled.

公开(公告)号：US20210399697A1

公开(公告)日：2021-12-23

申请号：US17466334

申请日：2021-09-03

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Qianfu CHENG ,  Guangjian WANG

IPC: H03F3/24 ,  H03F1/02 ,  H04B1/04

Abstract: This application provides a power amplification apparatus, a beamforming system, a transmitter, and a base station. The apparatus includes a power amplifier that amplifies a first signal, a power supply, and a power supply modulator that controls, based on an envelope signal corresponding to the first signal, an operating voltage provided by the power supply to the power amplifier. The apparatus is further configured to amplify a second signal. The first signal is generated based on the part of a target amplified signal whose amplitude falls within a preset amplitude range. The second signal is generated based on the part of the target amplified signal whose amplitude falls beyond the preset amplitude range.