Patents by Inventor Dave Roscoe

Dave Roscoe 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).

  • Broadband nonhomogeneous multi-segmented dielectric resonator antenna system
    Patent number: 5952972
    Abstract: A dielectric resonator antenna system is disclosed wherein a dielectric material having a high dielectric constant is placed between a dielectric resonator antenna (DRA) and the antenna feed. Preferably the dielectric material having a high dielectric constant is either in the form of an insert within a cavity of the DRA or alternatively is in the form of a thin layer between the feed and the DRA for enhancing coupling therebetween. It is preferred that the high dielectric constant material be at least twice the value of the dielectric resonator antenna.
    Type: Grant
    Filed: March 26, 1997
    Date of Patent: September 14, 1999
    Assignee: Her Majesty the Queen In right of Canada as represented by the Minister of Industry through the Communications Research Centre
    Inventors: Apisak Ittipiboon, Dave Roscoe, Aldo Petosa, Rajesh Mongia, Michel Cuhaci, Richard LaRose