Patents by Inventor Dongsheng Ma

Dongsheng Ma 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).

  • Publication number: 20240291382
    Abstract: An inductor, a power factor correction circuit, and a power supply system. The inductor includes a coil winding and a magnetic core. The magnetic core includes a first outer magnetic core, a second outer magnetic core, and a winding unit. The first outer magnetic core and the second outer magnetic core are disposed opposite to each other in a first direction, the winding unit is disposed between the first outer magnetic core and the second outer magnetic core, and the coil winding is disposed around the winding unit. The winding unit includes a magnetic core middle column and at least two air-gaps distributed in the first direction. The inductor can improve the operating efficiency of the power factor correction circuit and can optimize efficiency of the power supply system in the light load phase.
    Type: Application
    Filed: May 6, 2024
    Publication date: August 29, 2024
    Applicant: Huawei Digital Power Technologies Co., Ltd.
    Inventors: Jun WANG, Shaolei CHEN, Chuangpeng LI, Dongsheng ZHAO, Chenglong MA
  • Patent number: 12057630
    Abstract: Provided are antenna arrays based on three-dimensional special-shaped wave-absorbing structures by the disclosure, and includes an antenna array fixing plate and a plurality of antenna array units, where the antenna array units are sequentially fixed on the antenna array fixing plate; each of the plurality of antenna array units includes an antenna transmitting channel, two antenna receiving channels and a pair of three-dimensional special-shaped wave-absorbing structures; the antenna transmitting channel is used for transmitting antenna signals; the antenna receiving channels are used for receiving the antenna signals; and the three-dimensional special-shaped wave-absorbing structures are used for isolating antenna signals of antenna transmitting channels of other antenna array units.
    Type: Grant
    Filed: January 8, 2024
    Date of Patent: August 6, 2024
    Assignees: HOHAI UNIVERSITY, CHANGSHA UNIVERSITY OF SCIENCE & TECHNOLOGY
    Inventors: Haoran Zhu, Xin Yu, Jianlong Zheng, Zhi Xu, Guofang Wei, Dongsheng Ma
  • Publication number: 20240162604
    Abstract: Provided are antenna arrays based on three-dimensional special-shaped wave-absorbing structures by the disclosure, and includes an antenna array fixing plate and a plurality of antenna array units, where the antenna array units are sequentially fixed on the antenna array fixing plate; each of the plurality of antenna array units includes an antenna transmitting channel, two antenna receiving channels and a pair of three-dimensional special-shaped wave-absorbing structures; the antenna transmitting channel is used for transmitting antenna signals; the antenna receiving channels are used for receiving the antenna signals; and the three-dimensional special-shaped wave-absorbing structures are used for isolating antenna signals of antenna transmitting channels of other antenna array units.
    Type: Application
    Filed: January 8, 2024
    Publication date: May 16, 2024
    Inventors: Haoran ZHU, Xin YU, Jianlong ZHENG, Zhi XU, Guofang WEI, Dongsheng MA
  • Publication number: 20110101938
    Abstract: A switched-capacitor DC-DC converter has a reconfigurable power stage with variable gain ratio and/or interleaving regulation for low ripple voltage, fast load transient operation, variable output voltage and high efficiency. Since the power stage has multiple switches per capacitor, the converter exploits reconfigurable characteristics of the power stage for fast dynamic control and adaptive pulse control for tight and efficient voltage regulation.
    Type: Application
    Filed: November 20, 2008
    Publication date: May 5, 2011
    Applicant: The Arizona Board of Regents on Behalf of The University of Arizona
    Inventors: Dongsheng Ma, Inshad Chowdhury
  • Patent number: 7432614
    Abstract: A method and apparatus are disclosed for single-inductor multiple-output switching converter design. With the proposed freewheel switching control, this converter operates in a pseudo-continuous conduction mode (PCCM) and is capable of handling large load currents with a much smaller current ripple and peak inductor current, while retaining low cross regulation. It can also work in discontinuous conduction mode (DCM) for high efficiency at light loads. This design can be applied to have single or multiple outputs and for different types of DC-DC conversions.
    Type: Grant
    Filed: December 29, 2003
    Date of Patent: October 7, 2008
    Assignee: Hong Kong University of Science and Technology
    Inventors: Dongsheng Ma, Wing-Hung Ki, Chi-Ying Tsui
  • Patent number: 7345460
    Abstract: A device and method of providing thermal compensation for integrated circuits, e.g., complementary metal-oxide semiconductor integrated circuits (“IC”) is described. The device is an IC (e.g., digital, analog, and mixed-signal circuits) with a digital voltage control system (“VCS”) having a temperature-adaptive digital DC-to-DC power converter. In one embodiment, the DC-to-DC converter includes a power stage, which converts a voltage of an input power source to a variable supply voltage, a delay-line-based temperature sensing circuit that continuously monitors temperature changes, and adjusts the frequency and process speed of the IC to compensate for any performance degradation caused by thermal effects by adjusting the voltage supplied to the IC to increase or decrease the frequency and process speed of the IC in proportion to any abnormal temperature changes in the IC.
    Type: Grant
    Filed: February 24, 2006
    Date of Patent: March 18, 2008
    Assignee: Board of Supervisors of Louisiana State University and Agricultural and Mechanical College
    Inventors: Dongsheng Ma, Chuang Zhang
  • Publication number: 20060193157
    Abstract: A device and method of enhancing the reliability and performance of integrated circuits, e.g., complementary metal-oxide semiconductor integrated circuits (“IC”) is described. The device is an IC (e.g., digital, analog, and mixed-signal circuits) comprising a digital voltage control system (“VCS”) having a temperature-adaptive digital DC-to-DC voltage converter. In one embodiment, the DC-to-DC converter comprises a delay-line-based temperature sensing circuit that continuously monitors temperature changes, and adjusts the frequency and process speed of the IC to compensate for any performance degradation caused by thermal effects by adjusting the voltage supplied to the IC (i.e., Vout) to increase or decrease the frequency and process speed of the IC in proportion to any abnormal temperature changes in the IC.
    Type: Application
    Filed: February 24, 2006
    Publication date: August 31, 2006
    Inventors: Dongsheng Ma, Chuang Zhang
  • Publication number: 20040201281
    Abstract: A method and apparatus are disclosed for single-inductor multiple-output switching converter design. With the proposed freewheel switching control, this converter operates in a pseudo-continuous conduction mode (PCCM) and is capable of handling large load currents with a much smaller current ripple and peak inductor current, while retaining low cross regulation. It can also work in discontinuous conduction mode (DCM) for high efficiency at light loads. This design can be applied to have single or multiple outputs and for different types of DC-DC conversions.
    Type: Application
    Filed: December 29, 2003
    Publication date: October 14, 2004
    Applicant: The Hong Kong University of Science and Technology
    Inventors: Dongsheng Ma, Wing-Hung Ki, Chi-Ying Tsui
  • Patent number: D965465
    Type: Grant
    Filed: June 28, 2021
    Date of Patent: October 4, 2022
    Inventor: Dongsheng Ma