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公开(公告)号:US10511266B2
公开(公告)日:2019-12-17
申请号:US16016394
申请日:2018-06-22
Applicant: Huawei Technologies Co., Ltd.
Inventor: Lipeng Zhang , Zhonghua Cai , Kaizhan Wang , Wei Jiao , Zhiyuan Pang , Sheng Zhu
Abstract: A power amplifier control method is disclosed. A phase modulation control signal may be generated according to an envelope signal that is output by a baseband unit. The phase modulation may be performed on a signal of a main power amplifier link and/or an auxiliary power amplifier link in the Doherty power amplifier circuit according to the phase modulation control signal, so that a phase difference between the signal of the main power amplifier link and the signal of the auxiliary power amplifier link after the phase modulation is a specified value corresponding to a current value of the envelope signal, where the specified value is an optimal phase value of a Doherty power amplifier circuit when the supply voltage of the Doherty power amplifier circuit is an envelope voltage corresponding to the current value of the envelope signal. High-efficiency power amplifier technology is realized.
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公开(公告)号:US10673384B2
公开(公告)日:2020-06-02
申请号:US16284489
申请日:2019-02-25
Applicant: Huawei Technologies Co., Ltd.
Inventor: Lipeng Zhang , Zhonghua Cai , Ting Li , Kaizhan Wang
Abstract: A power amplifier, a radio remote unit (RRU), and a base station, where the power amplifier includes an envelope controller, a main power amplifier, and an auxiliary power amplifier. The main power amplifier and the auxiliary power amplifier both set an envelope voltage output by the envelope modulator as operating voltages, and because the operating voltages of the main power amplifier and the auxiliary power amplifier may be adjusted simultaneously, symmetry of the power amplifier is improved, and an efficiency loss occurring probability is low, thereby enhancing efficiency of the power amplifier.
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公开(公告)号:US20180302042A1
公开(公告)日:2018-10-18
申请号:US16016394
申请日:2018-06-22
Applicant: Huawei Technologies Co., Ltd.
Inventor: Lipeng Zhang , Zhonghua Cai , Kaizhan Wang , Wei Jiao , Zhiyuan Pang , Sheng Zhu
CPC classification number: H03F1/0288 , H03F1/0222 , H03F1/3282 , H03F1/56 , H03F3/19 , H03F3/211 , H03F3/245 , H03F3/602 , H03F2200/102 , H03F2200/336 , H03F2200/408 , H03F2200/423 , H03F2200/451
Abstract: A power amplifier control method is disclosed. A phase modulation control signal may be generated according to an envelope signal that is output by a baseband unit. The phase modulation may be performed on a signal of a main power amplifier link and/or an auxiliary power amplifier link in the Doherty power amplifier circuit according to the phase modulation control signal, so that a phase difference between the signal of the main power amplifier link and the signal of the auxiliary power amplifier link after the phase modulation is a specified value corresponding to a current value of the envelope signal, where the specified value is an optimal phase value of a Doherty power amplifier circuit when the supply voltage of the Doherty power amplifier circuit is an envelope voltage corresponding to the current value of the envelope signal. High-efficiency power amplifier technology is realized.
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公开(公告)号:US20170155364A1
公开(公告)日:2017-06-01
申请号:US15429660
申请日:2017-02-10
Applicant: Huawei Technologies Co., Ltd.
Inventor: Lipeng Zhang , Zhonghua Cai , Ting Li , Kaizhan Wang
CPC classification number: H03F1/0222 , H03F1/02 , H03F1/0227 , H03F1/0288 , H03F1/56 , H03F3/195 , H03F3/211 , H03F3/245 , H03F2200/451 , H03F2203/21106 , H03F2203/21139 , H04B1/16
Abstract: A power amplifier, a radio remote unit (RRU), and a base station, where the power amplifier includes an envelope controller, a main power amplifier, and an auxiliary power amplifier. The main power amplifier and the auxiliary power amplifier both set an envelope voltage output by the envelope modulator as operating voltages, and because the operating voltages of the main power amplifier and the auxiliary power amplifier may be adjusted simultaneously, symmetry of the power amplifier is improved, and an efficiency loss occurring probability is low, thereby enhancing efficiency of the power amplifier.
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公开(公告)号:US20240272286A1
公开(公告)日:2024-08-15
申请号:US18633184
申请日:2024-04-11
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor: Jian Liu , Zhonghua Cai , Shidong He , Lei Gao , Huahong Zhang
IPC: G01S7/4861 , G01S7/48 , G01S7/486
CPC classification number: G01S7/4861 , G01S7/4808 , G01S7/4868
Abstract: This application discloses a detection apparatus, a shunt circuit, and a terminal device. The detection apparatus may include a detection unit, an optical-to-electrical conversion unit, and a shunt circuit. The optical-to-electrical conversion unit performs optical-to-electrical conversion on an optical signal received by the detection unit, to obtain a current signal including a first current signal. The shunt circuit may shunt the first current signal to obtain N second current signals used to generate N second voltage signals.
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公开(公告)号:US11128259B2
公开(公告)日:2021-09-21
申请号:US16521517
申请日:2019-07-24
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor: Shunzhong Zhang , Lipeng Zhang , Zhonghua Cai
Abstract: A power amplification apparatus, a remote radio unit, and a base station are provided to improve power amplification efficiency. The power amplification apparatus includes an envelope modulator, a main power amplifier, and a first auxiliary power amplifier. The envelope modulator is configured to obtain an envelope voltage based on a received envelope signal and output the envelope voltage to the drain of the main power amplifier. The main power amplifier is connected to the envelope modulator and configured to use the envelope voltage as an operating voltage, and is connected to the first auxiliary power amplifier, to output the envelope voltage to a drain of the first auxiliary power amplifier. The first auxiliary power amplifier is configured to use the envelope voltage received from the main power amplifier as an operating voltage.
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公开(公告)号:US10230333B2
公开(公告)日:2019-03-12
申请号:US15888507
申请日:2018-02-05
Applicant: Huawei Technologies Co., Ltd.
Inventor: Lipeng Zhang , Zhonghua Cai , Ting Li , Kaizhan Wang
Abstract: A power amplifier, a radio remote unit (RRU), and a base station, where the power amplifier includes an envelope controller, a main power amplifier, and an auxiliary power amplifier. The main power amplifier and the auxiliary power amplifier both set an envelope voltage output by the envelope modulator as operating voltages, and because the operating voltages of the main power amplifier and the auxiliary power amplifier may be adjusted simultaneously, symmetry of the power amplifier is improved, and an efficiency loss occurring probability is low, thereby enhancing efficiency of the power amplifier.
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公开(公告)号:US09929695B2
公开(公告)日:2018-03-27
申请号:US15429660
申请日:2017-02-10
Applicant: Huawei Technologies Co., Ltd.
Inventor: Lipeng Zhang , Zhonghua Cai , Ting Li , Kaizhan Wang
CPC classification number: H03F1/0222 , H03F1/02 , H03F1/0227 , H03F1/0288 , H03F1/56 , H03F3/195 , H03F3/211 , H03F3/245 , H03F2200/451 , H03F2203/21106 , H03F2203/21139 , H04B1/16
Abstract: A power amplifier, a radio remote unit (RRU), and a base station, where the power amplifier includes an envelope controller, a main power amplifier, and an auxiliary power amplifier. The main power amplifier and the auxiliary power amplifier both set an envelope voltage output by the envelope modulator as operating voltages, and because the operating voltages of the main power amplifier and the auxiliary power amplifier may be adjusted simultaneously, symmetry of the power amplifier is improved, and an efficiency loss occurring probability is low, thereby enhancing efficiency of the power amplifier.
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公开(公告)号:US20240159879A1
公开(公告)日:2024-05-16
申请号:US18405817
申请日:2024-01-05
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor: Shuai Wang , Anliang Yu , Wei Wang , Zhonghua Cai
IPC: G01S7/4863 , G01S7/484
CPC classification number: G01S7/4863 , G01S7/484
Abstract: A detection control method and an apparatus are described that are used for target detection, and may be applied to the fields such as intelligent driving, intelligent transportation, surveying and mapping, and intelligent manufacturing. A control apparatus controls a laser emitting unit and a laser receiving unit to perform two phases of laser detection. A first phase of laser detection is used to determine a time location, and a second phase of laser detection is used for target detection in a time window including a first time location. In one aspect, in the second phase of detection process, the control apparatus controls a laser detection unit to receive an echo signal in a first time window. A time for receiving the echo signal is shortened, thus permitting an amount of data in the detection process to be reduced.
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公开(公告)号:US20190190458A1
公开(公告)日:2019-06-20
申请号:US16284489
申请日:2019-02-25
Applicant: Huawei Technologies Co., Ltd.
Inventor: Lipeng Zhang , Zhonghua Cai , Ting Li , Kaizhan Wang
Abstract: A power amplifier, a radio remote unit (RRU), and a base station, where the power amplifier includes an envelope controller, a main power amplifier, and an auxiliary power amplifier. The main power amplifier and the auxiliary power amplifier both set an envelope voltage output by the envelope modulator as operating voltages, and because the operating voltages of the main power amplifier and the auxiliary power amplifier may be adjusted simultaneously, symmetry of the power amplifier is improved, and an efficiency loss occurring probability is low, thereby enhancing efficiency of the power amplifier.
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