Patents by Inventor Christian I. Igwe

Christian I. Igwe 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).

  • Helix-spiral combination antenna
    Patent number: 8552922
    Abstract: Compound antennas are disclosed, as are aircraft comprising compound antennas and methods to use compound antennas. In one embodiment, a compound antenna comprises a ground plane, a helix antenna element comprising a first dielectric core having a first end and a second end and coupled to the ground plane at the first end, the helix antenna element exhibiting a normal mode polarization pattern, and a conical spiral antenna element disposed proximate the helix antenna element, the conical spiral antenna element exhibiting an axial mode polarization pattern, wherein both the normal-mode and the axial mode patterns are circular polarization patterns and have the same sense. Other embodiments may be described.
    Type: Grant
    Filed: November 2, 2011
    Date of Patent: October 8, 2013
    Assignee: The Boeing Company
    Inventor: Christian I. Igwe
  • HELIX-SPIRAL COMBINATION ANTENNA
    Publication number: 20130106664
    Abstract: Compound antennas are disclosed, as are aircraft comprising compound antennas and methods to use compound antennas. In one embodiment, a compound antenna comprises a ground plane, a helix antenna element comprising a first dielectric core having a first end and a second end and coupled to the ground plane at the first end, the helix antenna element exhibiting a normal mode polarization pattern, and a conical spiral antenna element disposed proximate the helix antenna element, the conical spiral antenna element exhibiting an axial mode polarization pattern, wherein both the normal-mode and the axial mode patterns are circular polarization patterns and have the same sense. Other embodiments may be described.
    Type: Application
    Filed: November 2, 2011
    Publication date: May 2, 2013
    Inventor: Christian I. Igwe