Patents by Inventor Barry Ephgrave

Barry Ephgrave 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).

  • Transceivers
    Patent number: 5926129
    Abstract: A combined duplexer/mixer (2) for use with FMCW radar systems has a waveguide section (12,13) containing a fin-line structure (17,18) for responding to the linearly polarized radar return signal while permitting passage of the orthogonally polarized transmitted signal (T). A portion of the transmitted signal is extracted by a patch antenna (22), this extracted signal forming a local oscillator signal for mixing with the return.
    Type: Grant
    Filed: November 21, 1997
    Date of Patent: July 20, 1999
    Assignee: Matra BAe Dynamics (UK) Limited
    Inventors: Barry Ephgrave, David Skidmore, John Anderson, Stanley W Waterman