Patents by Inventor Arthur C. Ludwig

Arthur C. Ludwig 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).

  • Radio frequency antenna with combined lens and polarizer
    Patent number: 4127857
    Abstract: A multibeam antenna having a radio frequency lens fed by a plurality of feedports is disclosed. The radio frequency lens includes a printed circuit parallel plate region and a polarizer section. The polarizer section includes a plurality of polarizer sheets separated by a plurality of layers of dielectric material, the dielectric constant of the printed circuit parallel plate region and the dielectric constant of the layers of dielectric material being selected to form substantially collimated beams, each one of such beams being associated with a corresponding one of the feedports. With this arrangement, the polarizer section is an integral part of the radio frequency lens, thereby reducing the size of the antenna.
    Type: Grant
    Filed: May 31, 1977
    Date of Patent: November 28, 1978
    Assignee: Raytheon Company
    Inventors: Charles P. Capps, George S. Hardie, Arthur C. Ludwig, Michael J. Maybell, Gary A. Wideman