Patents by Inventor William V. Tilston, deceased

William V. Tilston, deceased 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).

  • Polarization selective surface for circular polarization
    Patent number: 5053785
    Abstract: A surface for an antenna for use in discriminating between horizontal and vertical polarization components of a circularly polorized electromagnetic wave comprises at least one pair of dipoles, one of the dipoles of each pair of dipoles being adapted to receive one component of circular polarization and the other dipole of each pair of dipoles being adapted to receive the other component of circular polarization, and a transmission line extending between and electrically connecting the feed points of the dipoles of each pair of dipoles, whereby an incident circularly polarized electromagnetic wave is reflected when its two polarization components are incident upon their respective dipoles in phase and is transmitted when the its two components are incident upon their respective dipoles 180 electrical degrees out-of-phase.
    Type: Grant
    Filed: April 25, 1989
    Date of Patent: October 1, 1991
    Assignee: Her Majesty the Queen in right of Canada, as represented by the Minister of National Defence
    Inventors: William V. Tilston, deceased, Stephen E. Tilston, Mark Tilston, David Tilston, Thomas Tralman