Patents by Inventor Qingming Zhao

Qingming Zhao has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 10879610
    Abstract: This application discloses an antenna apparatus, including an antenna array and an adjustable phase shifter. In each row of antenna elements in the antenna array, antenna elements on a same radio frequency RF channel are spaced by M antenna elements, where M is used to determine a quantity of beams in a first beam group and a quantity of beams in a second beam group, and M is an integer greater than 1. When the adjustable phase shifter is at a first angle, the first beam group is obtained; or when the adjustable phase shifter is at a second angle, the second beam group is obtained. This application discloses a beam adjustment method. In this application, a plurality of beams can be formed in a horizontal direction, and the beams are grouped by using an adjustable phase shifter, thereby effectively improving beam adjustment flexibility.
    Type: Grant
    Filed: December 5, 2019
    Date of Patent: December 29, 2020
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Yannian Lou, Ni Ma, Wangjun Wu, Peng Chen, Jianping Zhao, Qingming Xie
  • Publication number: 20200136226
    Abstract: A feeding device is disclosed. The feeding device includes a body and at least one first port, the body includes at least one first contour port, and each of the at least one first contour port corresponds to one of the at least one first port; and the first contour port includes at least two sub-ports, and the at least two sub-ports of the first contour port are connected, by using at least one power splitter, to the first port corresponding to the first contour port. In the foregoing implementation solution, the first contour port is divided into several sub-ports, and the first port and the several sub-ports are connected by using the at least one power splitter.
    Type: Application
    Filed: December 24, 2019
    Publication date: April 30, 2020
    Inventors: Qingming Xie, Gaonan Zhou, Qiuyan Liang, Jianping Zhao
  • Publication number: 20200112099
    Abstract: This application discloses an antenna apparatus, including an antenna array and an adjustable phase shifter. In each row of antenna elements in the antenna array, antenna elements on a same radio frequency RF channel are spaced by M antenna elements, where M is used to determine a quantity of beams in a first beam group and a quantity of beams in a second beam group, and M is an integer greater than 1. When the adjustable phase shifter is at a first angle, the first beam group is obtained; or when the adjustable phase shifter is at a second angle, the second beam group is obtained. This application discloses a beam adjustment method. In this application, a plurality of beams can be formed in a horizontal direction, and the beams are grouped by using an adjustable phase shifter, thereby effectively improving beam adjustment flexibility.
    Type: Application
    Filed: December 5, 2019
    Publication date: April 9, 2020
    Inventors: Yannian LOU, Ni MA, Wangjun WU, Peng CHEN, Jianping ZHAO, Qingming XIE
  • Publication number: 20200041548
    Abstract: Non-fault disturbance-based method and system for measuring short-circuit capacity of a power grid on site including: connecting or disconnecting a reactive compensation device to or from a power grid point of common coupling, to generate a disturbance on a power grid; obtaining total active power and total reactive power of a load of the point of common coupling before the disturbance; determining a vector difference between a voltage of the power grid point of common coupling before the disturbance and a voltage of the power grid point of common coupling after the disturbance; obtaining a voltage effective value of the power grid point of common coupling before the disturbance; obtaining a capacity of the reactive compensation device; and determining a short-circuit capacity of the point of common coupling according to total active power, total reactive power, vector difference between voltages, voltage effective value, and capacity of the reactive compensation device.
    Type: Application
    Filed: October 3, 2018
    Publication date: February 6, 2020
    Applicant: Power Grid Planning Research Institute of Guizhou Power Grid Co., Ltd.
    Inventors: Pu DENG, Zhenghang HAO, Zhenming LIU, Yi XUE, Guangmei ZHANG, Zhuo CHEN, Qingming ZHAO, Xueyong TANG, Qingsheng LI, Yu ZHANG, Sha ZHANG, Xianggang HE, Jian WANG, Sibin LU, Ke YANG
  • Publication number: 20200021346
    Abstract: An antenna system is disclosed. The system includes: N radio frequency channels, configured to send a radio frequency signal to drive one or two columns of M columns of antennas, and N<M?2N; the M columns of antennas, configured to receive radio frequency signals, where only one column of two columns of antennas driven on a same radio frequency channel are connected to one of the M?N phase shifters, and is also connected to one of the M?N power splitters; the M?N power splitters, where any of the M?N power splitters is configured to split power for the two columns of antennas connected to the radio frequency channel; and the M?N phase shifters, where any of the M?N phase shifters is configured to adjust a phase of a radio frequency signal received by an antenna connected to the phase shifter.
    Type: Application
    Filed: September 26, 2019
    Publication date: January 16, 2020
    Inventors: Qingming XIE, Jianping ZHAO, Yang GENG
  • Patent number: 10333220
    Abstract: Embodiments of the present invention disclose an interleaved polarized multi-beam antenna, including: at least one dual-polarized antenna element, where the dual-polarized antenna element includes a +45-degree-polarized first antenna element and a ?45-degree-polarized second antenna element; and a first Butler matrix and a second Butler matrix, where the first Butler matrix is connected to the first antenna element so that the first antenna element transmits a first target beam, and the second Butler matrix is connected to the second antenna element so that the second antenna element transmits a second target beam. The first target beam and the second target beam in the embodiments are alternately arranged, and any two adjacent first target beam and second target beam have different polarization characteristics; therefore, complexity, a loss, and costs of implementation of a Butler matrix can be effectively reduced, and interference between adjacent multiplexed beams can be effectively decreased.
    Type: Grant
    Filed: June 28, 2017
    Date of Patent: June 25, 2019
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Jianping Zhao, Yang Geng, Qingming Xie
  • Patent number: 8127170
    Abstract: An audio receiver's output clock is synchronized based on a number of input and output audio samples measured over a predetermined sample period. In one embodiment, a sample difference may be determined by subtracting the measured number of input audio samples from the measured number of output audio samples. This sample difference may then be compared to a predetermined threshold. In one embodiment, if the absolute value of the sample difference is less than the predetermined threshold, no adjustment to the output clock may be needed. When the absolute value of the sample difference is greater than the predetermined threshold, the output clock rate may be adjusted either upwards or downwards.
    Type: Grant
    Filed: June 13, 2008
    Date of Patent: February 28, 2012
    Assignee: CSR Technology Inc.
    Inventors: Qingming Zhao, Songcun Chen, Hui Zhang
  • Publication number: 20110078482
    Abstract: An audio receiver's output clock is synchronized based on a number of input and output audio samples measured over a predetermined sample period. In one embodiment, a sample difference may be determined by subtracting the measured number of input audio samples from the measured number of output audio samples. This sample difference may then be compared to a predetermined threshold. In one embodiment, if the absolute value of the sample difference is less than the predetermined threshold, no adjustment to the output clock may be needed. When the absolute value of the sample difference is greater than the predetermined threshold, the output clock rate may be adjusted either upwards or downwards.
    Type: Application
    Filed: June 13, 2008
    Publication date: March 31, 2011
    Applicant: Zoran Corporation
    Inventors: Qingming Zhao, Songcun Chen, Hui Zhang