公开(公告)号：US20210376481A1

公开(公告)日：2021-12-02

申请号：US17405868

申请日：2021-08-18

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xun ZHANG ,  Jianping LI ,  Xiaodeng DUAN ,  Wenao LI

IPC: H01Q21/00 ,  H01Q1/36 ,  H01Q1/12

Abstract: Embodiments of this application provide a radiation apparatus and a multi-band array antenna, and relate to the field of antenna technologies. The radiation apparatus includes a radiation module, a first conductor balun, and a second conductor balun. The first conductor balun is mechanically connected to the second conductor balun under the radiation module. The radiation module includes a first radiation unit and a second radiation unit in a +45° polarization direction, and a third radiation unit and a fourth radiation unit in a −45° polarization direction. The first conductor balun is configured to feed a first differential signal to the first radiation unit and the second radiation unit. The second conductor balun is configured to feed a second differential signal to the third radiation unit and the fourth radiation unit. The first conductor balun and the second conductor balun are disposed in the same plane.

公开(公告)号：US20180032401A1

公开(公告)日：2018-02-01

申请号：US15727431

申请日：2017-10-06

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xun ZHANG ,  Laifa ZHANG ,  Yakun WANG

IPC: G06F11/14

Abstract: A system running method applied to an intelligent terminal is provided. The intelligent terminal includes a first system and a second system. The second system can implement a call function and/or a short message service function, and a function that can be implemented by the first system includes a function that can be implemented by the second system. The method includes: starting the first system and the second system, where an operation screen of the first system is visible to a user; detecting a running status of the first system; and when it is detected that the first system is faulty, terminating running of the first system, and switching to an operation screen of the second system disclosure.

公开(公告)号：US20200076371A1

公开(公告)日：2020-03-05

申请号：US16462698

申请日：2017-03-09

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xun ZHANG

IPC: H03F1/02 ,  H03F3/20 ,  H04R3/00

Abstract: A power supply circuit comprises a power conversion circuit, a voltage selection circuit, and a voltage regulator. The voltage regulator coupled to the voltage selection circuit and a digital-to-analog converter (DAC), and the voltage regulator is configured to provide supply power to the DAC; the power conversion circuit is coupled to a first power supply and a power amplifier (PA), and the power conversion circuit is configured to convert, based on output power of the PA, a voltage of the first power supply into an output voltage that supply power to the PA; and the voltage selection circuit is coupled to a second power supply, the power conversion circuit and the voltage regulator, and the voltage selection circuit is configured to select the second power supply or the power conversion circuit to supply power to the voltage regulator based on an output voltage of the power conversion circuit.