Patents by Inventor Jia Jun Zheng

Jia Jun Zheng 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).

  • Architecture for RFID tag reader/writer
    Patent number: 7979034
    Abstract: An RFID transceiver (200) includes a common frequency source (250), a receiving channel (230) and a transmitting channel (240). The common frequency source (250) is configured to provide a predefined intermediate frequency signal fIF, and a predefined carrier frequency signal fc. The RFID receiving channel (230) includes an upconverting mixer (232) having a first input coupled to receive the predefined intermediate frequency signal fIF, a second input coupled to receive the predefined carrier frequency signal fc, and an output, the upconverting mixer (232) operable to produce an upconverted signal at a frequency defined by fc±fIF.
    Type: Grant
    Filed: February 18, 2005
    Date of Patent: July 12, 2011
    Assignees: Agency for Science, Technology and Research, Cyrips Pte Ltd.
    Inventors: Pradeep B. Khannur, Sheng Jau Wong, Aruna B. Ajjikuttira, Jia Jun Zheng
  • Architecture For Rfid Tag Reader/Writer
    Publication number: 20080252421
    Abstract: An RFID transceiver (200) includes a common frequency source (50), a receiving channel (230) and a transmitting channel (240). The common frequency source (250) is configured to provide a predefined intermediate frequency signal fIF, and a predefined carrier frequency signal fc. The RFID receiving channel (230) includes an upconverting mixer (232) having a first input coupled to receive the predefined intermediate frequency signal fIF, a second input coupled to receive the predefined carrier frequency signal fc, and an output, the upconverting mixer (232) operable to produce an upconverted signal at a frequency defined by fc±fIF.
    Type: Application
    Filed: February 18, 2005
    Publication date: October 16, 2008
    Applicants: AGENCY FOR SCIENCE, TECHNOLOGY AND RESEARCH
    Inventors: Pradeep B. Khannur, Sheng Jau Wong, Aruna B. Ajjikuttira, Jia Jun Zheng