Patents by Inventor Xiongying LIU

Xiongying LIU 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: 11855329
    Abstract: The invention discloses a filtering antenna for wearable devices, which includes a top dielectric substrate, a bottom dielectric substrate, an antenna radiation unit, a top metal ground, a bottom metal ground, and an artificial magnetic conductor structure. The antenna radiation unit is printed on an upper surface of the top dielectric substrate, the top metal ground is printed on a lower surface of the top dielectric substrate, the artificial magnetic conductor structure is etched on an upper surface of the bottom dielectric substrate, and the bottom metal ground is printed on a lower surface of the bottom dielectric substrate. The antenna radiation unit is formed by a circular patch and a microstrip coupling feed stub structure. The invention has the advantages of miniaturization, easy integration, low profile, high gain, anti-interference, may work in the 5.8-GHz ISM frequency band, may be used in wearable devices, has filtering effect etc.
    Type: Grant
    Filed: October 18, 2018
    Date of Patent: December 26, 2023
    Assignee: South China University of Technology
    Inventors: Xiongying Liu, Haixiang Zhu, Zhongxin Li, Hongcai Yang
  • Patent number: 11295096
    Abstract: The proposed invention discloses an automatic search method for a structural mode signal of a chipless RFID tag. A reference plane, a target to be tested, a reader antenna and a reader are set in space. The target to be tested is located within the reading range of the reader antenna. The distance difference between the tag and the reference plane, to the antenna, is measured by using the phenomenon of the backscattered signals of the tag and the reference plane interfering in space, to obtain the distance between the tag and the antenna. The time period for extracting the antenna mode of the tag may maximize the use of the antenna mode signal, thereby enhancing the accuracy of reading the tag.
    Type: Grant
    Filed: November 5, 2018
    Date of Patent: April 5, 2022
    Assignee: SOUTH CHINA UNIVERSITY OF TECHNOLOGY
    Inventors: Xiongying Liu, Nuanfeng Zhang, Tianhai Chang, Yi Fan, Yunjiong Qin
  • Publication number: 20210273319
    Abstract: The invention discloses a filtering antenna for wearable devices, which includes a top dielectric substrate, a bottom dielectric substrate, an antenna radiation unit, a top metal ground, a bottom metal ground, and an artificial magnetic conductor structure. The antenna radiation unit is printed on an upper surface of the top dielectric substrate, the top metal ground is printed on a lower surface of the top dielectric substrate, the artificial magnetic conductor structure is etched on an upper surface of the bottom dielectric substrate, and the bottom metal ground is printed on a lower surface of the bottom dielectric substrate. The antenna radiation unit is formed by a circular patch and a microstrip coupling feed stub structure. The invention has the advantages of miniaturization, easy integration, low profile, high gain, anti-interference, may work in the 5.8-GHz ISM frequency band, may be used in wearable devices, has filtering effect etc.
    Type: Application
    Filed: October 18, 2018
    Publication date: September 2, 2021
    Applicant: South China University of Technology
    Inventors: Xiongying LIU, Haixiang ZHU, Zhongxin LI, Hongcai YANG
  • Publication number: 20210248329
    Abstract: The proposed invention discloses an automatic search method for a structural mode signal of a chipless RFID tag. A reference plane, a target to be tested, a reader antenna and a reader are set in space. The target to be tested is located within the reading range of the reader antenna. The distance difference between the tag and the reference plane, to the antenna, is measured by using the phenomenon of the backscattered signals of the tag and the reference plane interfering in space, to obtain the distance between the tag and the antenna. The time period for extracting the antenna mode of the tag may maximize the use of the antenna mode signal, thereby enhancing the accuracy of reading the tag.
    Type: Application
    Filed: November 5, 2018
    Publication date: August 12, 2021
    Applicant: South China University of Technology
    Inventors: Xiongying LIU, Nuanfeng ZHANG, Tianhai CHANG, Yi FAN, Yunjiong QIN