Patents by Inventor Andrew J. Stambaugh

Andrew J. Stambaugh 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).

  • Shaped dual reflector antenna system for generating a plurality of beam coverages
    Patent number: 5546097
    Abstract: A dual-reflector antenna system (40) is provided for generating a shaped main beam radiation pattern (20) and at least one additional secondary spot beam radiation pattern (30,32). The antenna system (40) includes a main shaped reflector (10) having a shaped reflective surface (11) operatively coupled to a subreflector (12) for communicating therewith. A main feed horn (14) communicates directly with the subreflector (12) so as to reflect first energy to and from the main reflector (10) within a shaped beam radiation pattern (20). In a preferred embodiment, the subreflector (12) has an ellipsoidal reflective surface (13) which communicates directly with the main reflector (10) via an inverted reflective path (17) which has a converging focal point (18). One or more auxiliary feed horns (24,26) are operatively coupled directly to the main reflector so as to directly communicate therewith and reflect second energy within one or more additional radiation patterns (30,32).
    Type: Grant
    Filed: December 22, 1992
    Date of Patent: August 13, 1996
    Assignee: Hughes Aircraft Company
    Inventors: Parthasarathy Ramanujam, Charlie C. Shin, Louis R. Fermelia, Jr., Andrew J. Stambaugh