Patents by Inventor Yuda FENG

Yuda FENG 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).

  • Orthogonal frequency-division multiple access-based backscatter system
    Patent number: 11843494
    Abstract: An orthogonal frequency-division multiple access (OFDMA)-based backscatter system is provided, including an analog portion and a digital logic portion. The analog portion includes an antenna, radio frequency switches, an envelope detection circuit, and a transmission line. The digital logic portion includes an inverse discrete Fourier transform (IDFT)-based digital frequency synthesis module. Two outputs of the digital logic portion control all of the radio frequency switches, and the envelope detection circuit provides an input of the digital logic portion. OFDMA backscatter tags designed can operate on any given subchannel without hardware being re-powered and modified, and can operate at a specified symbol rate. The system provides a networking physical layer foundation for a large amount of OFDMA backscatter tags, and satisfies the growing Internet of Things capacity requirements.
    Type: Grant
    Filed: June 23, 2021
    Date of Patent: December 12, 2023
    Assignee: SHANGHAI JIAO TONG UNIVERSITY
    Inventors: Fengyuan Zhu, Yuda Feng, Qianru Li, Xiaohua Tian, Xinbing Wang
  • ORTHOGONAL FREQUENCY-DIVISION MULTIPLE ACCESS-BASED BACKSCATTER SYSTEM
    Publication number: 20230103804
    Abstract: An orthogonal frequency-division multiple access (OFDMA)-based backscatter system is provided, including an analog portion and a digital logic portion. The analog portion includes an antenna, radio frequency switches, an envelope detection circuit, and a transmission line. The digital logic portion includes an inverse discrete Fourier transform (IDFT)-based digital frequency synthesis module. Two outputs of the digital logic portion control all of the radio frequency switches, and the envelope detection circuit provides an input of the digital logic portion. OFDMA backscatter tags designed can operate on any given subchannel without hardware being re-powered and modified, and can operate at a specified symbol rate. The system provides a networking physical layer foundation for a large amount of OFDMA backscatter tags, and satisfies the growing Internet of Things capacity requirements.
    Type: Application
    Filed: June 23, 2021
    Publication date: April 6, 2023
    Applicant: SHANGHAI JIAO TONG UNIVERSITY
    Inventors: Fengyuan ZHU, Yuda FENG, Qianru LI, Xiaohua TIAN, Xinbing WANG