Patents by Inventor John Catranis

John Catranis 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).

  • Wideband stripline to microstrip transition
    Patent number: 4862120
    Abstract: The invention relates to a transition between a "stripline" and a "microstrip" transmission line which uses printed circuit board materials and processes. The transition, which includes a stripline region and a microstrip region, also includes a transitional region in which a quasi coaxial line section is provided in the stripline region near the termination of the upper ground plane. A double tapered double slot line is used to avoid discontinuity. The two slots taper to minimum width at the termination of the upper ground plane, and widen in the transition to the microstrip region. The transition is of wideband operation (e.g. from near DC to 20 gHz) and of high performance.
    Type: Grant
    Filed: February 29, 1988
    Date of Patent: August 29, 1989
    Assignee: Canadian Patents and Development Limited/Societe Canadienne des Brevets et d'Exploitation Limitee
    Inventors: James Ruxton, John Catranis