Patents by Inventor Karl R. Guppy

Karl R. Guppy 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).

  • Through glass RF coupler system
    Patent number: 6661386
    Abstract: A radio frequency (RF) coupler for passing RF energy through a dielectric such as glass, includes first and second circuit boards, each board having disposed thereon an electrical conducting material, the first and second circuit boards being arranged opposite each other on opposing sides of the dielectric, the first circuit board having a first ground element that defines a first aperture, and a first exciter strip disposed within the first aperture, the second circuit board having a second ground element that defines a second aperture, and a second exciter strip disposed within the second aperture, wherein one of the first and second exciter strips is longer than the other.
    Type: Grant
    Filed: March 29, 2002
    Date of Patent: December 9, 2003
    Assignee: XM Satellite Radio
    Inventors: Argy Petros, Terry C. Helstrom, Karl R. Guppy
  • Multi-stage antenna
    Patent number: 5504494
    Abstract: An antenna system (202) provides communication capabilities in both extended and retracted positions. Antenna system (202) includes a base helical (214) that capacitively couples to a half wavelength radiator (222) in the extended position. Base helical (214) capacitively couples to a top helical (228) in the retracted position, thereby reducing case currents on the surface of the housing (206).
    Type: Grant
    Filed: November 25, 1994
    Date of Patent: April 2, 1996
    Assignee: Motorola, Inc.
    Inventors: Argyrios A. Chatzipetros, Karl R. Guppy, Sybren D. Smith