Patents by Inventor James C. Chu

James C. Chu 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).

  • Fin line circuit for detecting R.F. wave signals
    Patent number: 4425549
    Abstract: A fin line apparatus, within a rectangular waveguide, for detecting R.F. signals utilizes metallic film conductors, disposed on both surfaces of a planar dielectric centered in the waveguide parallel to its sidewalls, for forming aligned channels, a first of which couples R.F. signals to a diode which provides rectified signals to a metallic film filter disposed in a gap in a conductor which opens into the first channel.
    Type: Grant
    Filed: July 27, 1981
    Date of Patent: January 10, 1984
    Assignee: Sperry Corporation
    Inventors: Paul M. Schwartz, James C. Chu
  • Antenna
    Patent number: 4370659
    Abstract: A broad band millimeter wave finline antenna includes a finline transmission means having a flared end portion formed by tapering the adjacent edges of the finline elements and affixing planar sectoral conducting members to the tapered edges. The finline transmission means may be mounted in a housing that provides a transition for coupling the antenna to exterior waveguides or other transmission means.
    Type: Grant
    Filed: July 20, 1981
    Date of Patent: January 25, 1983
    Assignee: Sperry Corporation
    Inventors: James C. Chu, Patrick E. Crane, Jack V. D'Agostino, Paul M. Schwartz