Patents by Inventor Donald R. Chambers

Donald R. Chambers 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).

  • Semi-lumped element coupler
    Patent number: 4011528
    Abstract: A coupling circuit for use at microwave frequencies comprising two conductors each having substantially the shape of a W, which conductors are deposited on a substrate in a manner so that the bases of W's oppose one another to form two semi-lumped capacitances of different susceptance, separated by phasing line lengths.
    Type: Grant
    Filed: July 14, 1975
    Date of Patent: March 8, 1977
    Assignee: Stanford Research Institute
    Inventors: Allen F. Podell, Leo Young, Arthur Karp, Donald R. Chambers
  • Proximity coupler
    Patent number: 3980972
    Abstract: A proximity coupler is provided for high frequency circuits wherein conductors are deposited on a substrate in the shape of a hollow dumbbell intersected by an X. Coupling is provided primarily across sawtoothed shaped gaps in the dumbbell center section and secondarily across a gap formed by spaced parallel connectors in said center section. The parallel conductors have phase delaying loops at opposite ends, and the resulting coupling characteristics of the proximity coupler can be modified by dimensional changes of the loops.
    Type: Grant
    Filed: July 14, 1975
    Date of Patent: September 14, 1976
    Assignee: Stanford Research Institute
    Inventors: Allen F. Podell, Leo Young, Arthur Karp, Donald R. Chambers