Patents by Inventor Stephen N. Andre

Stephen N. Andre 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).

  • VCO-Controlled phase lock system
    Patent number: 4159475
    Abstract: A phase coherent canceller for jamming suppression is provided with a variable controlled oscillator which is locked in frequency and phase to a reference local oscillator in a closed loop configuration.
    Type: Grant
    Filed: June 5, 1978
    Date of Patent: June 26, 1979
    Assignee: Calspan Corporation
    Inventors: Stephen N. Andre, Hendrik W. Prinsen
  • Circular retrodirective array
    Patent number: 3958246
    Abstract: The retrodirective array antenna of the present invention employs a circular, focusing parallel plate lens to interconnect array elements, thus producing a body with an inherently large radar cross section. By modulating the radiated signal from such an array, it is possible to meet the requirements for passive beacon and data transmission applications. Information transmittal is accomplished via the selection of the modulation function.
    Type: Grant
    Filed: July 5, 1974
    Date of Patent: May 18, 1976
    Assignee: Calspan Corporation
    Inventors: Robert J. Wohlers, Stephen N. Andre