Patents by Inventor Pushpa M. Choriyammakal

Pushpa M. Choriyammakal 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).

  • Patent number: 4878062
    Abstract: A low profile, low drag, broad-banded antenna system includes four substantially identical antenna elements in intimate contact with a hemisphere of high dielectric constant material. The antenna elements are equally spaced from each other around the hemisphere and are connected to a power divider circuit for reception of incoming signals from a global position satellite having circular polarization. A dielectric phase equalizing member of variable thickness surrounds the antennas in intimate contact therewith for improving the axial ratio particularly at low angles of radiation. The dielectric phase equalizing member is also formed from a high dielectric constant material. A radome of a radio transparent material covers the assembly to provide an aerodynamic configuration and to protect the antenna from the weather. The antenna has a gain from approximately -2.5 dBic at 10.degree. above the horizon to approximately +3 dBic at 30.degree. above the horizon.
    Type: Grant
    Filed: July 28, 1988
    Date of Patent: October 31, 1989
    Assignee: Dayton-Granger, Inc.
    Inventors: Tyson S. Craven, Pushpa M. Choriyammakal