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公开(公告)号：US11791864B2
公开(公告)日：2023-10-17
申请号：US17199165
申请日：2021-03-11
Applicant: Huawei Technologies Co., Ltd.
Abstract: A PLC control method includes: transmit a first signal through a neutral wire and a path between the neutral wire and a differential signal processing circuit; transmit a second signal through a live wire and a path between the live wire and the differential signal processing circuit; and disconnecting the path between the differential signal processing circuit and the neutral wire or the live wire, conducting the differential signal processing circuit to a ground wire, and when a transmission rate of the ground wire is greater than or equal to a preset transmission rate threshold, transmitting the first signal or the second signal through the ground wire and a path between the ground wire and the differential signal processing circuit.
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公开(公告)号：US20210203381A1
公开(公告)日：2021-07-01
申请号：US17199165
申请日：2021-03-11
Applicant: Huawei Technologies Co., Ltd.
Abstract: A PLC control method includes: transmit a first signal through a neutral wire and a path between the neutral wire and a differential signal processing circuit; transmit a second signal through a live wire and a path between the live wire and the differential signal processing circuit; and disconnecting the path between the differential signal processing circuit and the neutral wire or the live wire, conducting the differential signal processing circuit to a ground wire, and when a transmission rate of the ground wire is greater than or equal to a preset transmission rate threshold, transmitting the first signal or the second signal through the ground wire and a path between the ground wire and the differential signal processing circuit.
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公开(公告)号：US20190319354A1
公开(公告)日：2019-10-17
申请号：US16310607
申请日：2016-06-17
Applicant: Huawei Technologies Co., Ltd.
Inventor： Yuzhen Zhang , Kemeng Wang , Yiwen Gong , Chaoxu Li , Fang Xia
Abstract: An antenna includes a director-reflector unit, which includes two radiation elements, and a switch, and a main element configured to transmit and receive a signal. Total electrical length of the two radiation elements is greater than one half of a wavelength corresponding to an operating frequency band of the antenna, and electrical length of either of the two radiation elements is less than one half of the wavelength corresponding to the operating frequency band of the antenna. The two radiation elements are coupled using the switch and the director-reflector unit is used as a reflector and configured to reflect the signal transmitted and received by the main element when the switch is switched on, and the two radiation elements are decoupled and the director-reflector unit is used as a director and configured to direct the signal transmitted and received by the main element when the switch is switched off.
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