Patents by Inventor Mark Andrew Sprey

Mark Andrew Sprey 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).

  • Shaped-reflector multibeam antennas
    Patent number: 6977622
    Abstract: A method, an apparatus, and a computer program product for electromagnetically designing a shaped-reflector multibeam antenna (100) are disclosed. An initial configuration of the multibeam antenna (100) for given beam directions is provided of reflectors (110,120) shaped with an initial reflector shaping process (612) and feeds of an initial specification (614). The initial reflector shaping process (612) is an iterative optimization process for increasing the focusing of optical rays incident on the multibeam antenna from the given beam directions (100). A second iterative optimizing process consisting of optimizing (620) radiation patterns of feeds (140A-140D) and optimizing (622) surface shapes and sizes of reflectors (110,120) is used to reduce beam spillover, improve beam shapes and obtain beams with gain radiation patterns within required upper and lower bounds.
    Type: Grant
    Filed: September 18, 2003
    Date of Patent: December 20, 2005
    Assignee: Commonwealth Scientific and Industrial Research Organisation
    Inventors: Stuart Gifford Hay, Christophe Jean-Marc Granet, Trevor Stanley Bird, Mark Andrew Sprey, Stephen John Barker, Anthony Ross Forsyth
  • Shaped-reflector multibeam antennas
    Publication number: 20040108961
    Abstract: A method, an apparatus, and a computer program product for electromagnetically designing a shaped-reflector multibeam antenna (100) are disclosed. An initial configuration of the multibeam antenna (100) for given beam directions is provided of reflectors (110,120) shaped with an initial reflector shaping process (612) and feeds of an initial specification (614). The initial reflector shaping process (612) is an iterative optimization process for increasing the focusing of optical rays incident on the multibeam antenna from the given beam directions (100). A second iterative optimizing process consisting of optimizing (620) radiation patterns of feeds (140A-140D) and optimizing (622) surface shapes and sizes of reflectors (110,120) is used to reduce beam spillover, improve beam shapes and obtain beams with gain radiation patterns within required upper and lower bounds.
    Type: Application
    Filed: September 18, 2003
    Publication date: June 10, 2004
    Inventors: Stuart Gifford Hay, Christophe Jean-Marc Granet, Trevor Stanley Bird, Mark Andrew Sprey, Stephen John Barker, Anthony Ross Forsyth
  • Multibeam antenna
    Patent number: D471538
    Type: Grant
    Filed: September 19, 2001
    Date of Patent: March 11, 2003
    Assignee: Commonwealth Scientific and Industrial Research Organisation
    Inventors: Anthony Ross Forsyth, Stuart Gifford Hay, Stephen John Barker, Trevor Stanley Bird, Mark Andrew Sprey, Peter John Goss, Kenneth Charles Skinner