Patents by Inventor Mark A. Aitken

Mark A. Aitken 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).

  • Electromagnetic wave combining device and television broadcast transmission system using same
    Patent number: 5959508
    Abstract: Apparatus is provided for allowing two high frequency signals from two separate sources to be combined for simultaneous propagation through a common propagation medium such as an antenna or transmission line, while maintaining isolation between the signals at the inputs of the sources and preventing unwanted interference and resulting distortion. The apparatus includes an orthogonal mode converger which receives two combined electromagnetic energy waves having orthogonally disposed electric field vectors and incrementally converges them to the same direction through a varying cross-section waveguide structure.
    Type: Grant
    Filed: August 1, 1997
    Date of Patent: September 28, 1999
    Assignee: Thomcast Communications, Inc.
    Inventor: Mark Aitken