- 专利标题: WIRELESS COMMUNICATIONS SYSTEM, POWER SUPPLY SYSTEM, AND TERMINAL DEVICE
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申请号: US17789011申请日: 2020-12-25
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公开(公告)号: US20230027340A1公开(公告)日: 2023-01-26
- 发明人: Hsiang Hui CHANG , Daiping TANG , Feiyang HU
- 申请人: HUAWEI TECHNOLOGIES CO., LTD.
- 申请人地址: CN Shenzhen
- 专利权人: HUAWEI TECHNOLOGIES CO., LTD.
- 当前专利权人: HUAWEI TECHNOLOGIES CO., LTD.
- 当前专利权人地址: CN Shenzhen
- 优先权: CN201911367567.1 20191226
- 国际申请: PCT/CN2020/139220 WO 20201225
- 主分类号: H04B1/04
- IPC分类号: H04B1/04 ; H03F3/68 ; H04B1/40 ; H03F1/06
摘要:
A power supply circuit in a wireless communications system includes an envelope tracking modulator coupled to a first power amplifier circuit and a second power amplifier circuit, so that the power supply circuit supplies power to the first power amplifier circuit and the second power amplifier circuit. When a transmit signal output by a processor is within a first bandwidth range, the power supply circuit supplies power to the first power amplifier circuit, and the first power amplifier circuit amplifies power of the transmit signal. When the transmit signal output by the processor meets a second bandwidth range, the power supply circuit supplies power to the second power amplifier circuit, and the second power amplifier circuit amplifies the transmit signal.