Patents by Inventor Jun W. Lu

Jun W. Lu 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).

  • Antennas for use in portable communications devices
    Patent number: 6034638
    Abstract: In one embodiment, an antenna has four equally spaced monopole elements mounted in a symmetric array on the outer surface of a solid cylinder structure. The cylinder has a high dielectric constant, and extends from a conductive ground plane. The monopole elements can be switched by switching elements so that one or more is active, with the others acting as parasitic directors/reflectors being connected commonly to ground or left in an open circuit condition to be effectively transparent.
    Type: Grant
    Filed: March 14, 1996
    Date of Patent: March 7, 2000
    Assignee: Griffith University
    Inventors: David V. Thiel, Steven G. O'Keefe, Jun W. Lu