Patents by Inventor Saxon Sean Ian Liw

Saxon Sean Ian Liw 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).

  • High efficiency transmit antenna
    Patent number: 6744409
    Abstract: A planar inverted-F antenna (PIFA) to facilitate communications within a plurality of frequency bands is disclosed. The top plate of the PIFA is placed at a predetermined height above a ground plane and shorting pins are placed in contact between the top plate and the ground plane. The feed pin is placed a predetermined distance away from each of the shorting pins within the interior area of the top plate. The shorting pins provide the ability to tune the PIFA to achieve either class-F or inverse class-F impedances over a wide range of frequencies. Also disclosed is an offset top loaded monopole (TLM) in which the feed pin connected to the top plate is offset from the centre of the top plate to provide a desired impedance.
    Type: Grant
    Filed: December 28, 2001
    Date of Patent: June 1, 2004
    Assignee: National University of Singapore
    Inventors: Grant Andrew Ellis, Saxon Sean Ian Liw
  • High efficiency transmit antenna
    Publication number: 20030122716
    Abstract: A planar inverted-F antenna (PIFA) to facilitate communications within a plurality of frequency bands is disclosed. The top plate of the PIFA is placed at a predetermined height above a ground plane and shorting pins are placed in contact between the top plate and the ground plane. The feed pin is placed a predetermined distance away from each of the shorting pins within the interior area of the top plate. The shorting pins provide the ability to tune the PIFA to achieve either class-F or inverse class-F impedances over a wide range of frequencies. Also disclosed is an offset top loaded monopole (TLM) in which the feed pin connected to the top plate is offset from the centre of the top plate to provide a desired impedance.
    Type: Application
    Filed: December 28, 2001
    Publication date: July 3, 2003
    Inventors: Grant Andrew Ellis, Saxon Sean Ian Liw