Communications: radio wave antennas – Antennas – With lumped reactance for loading antenna
Reexamination Certificate
2007-09-04
2007-09-04
Nguyen, Hoang V. (Department: 2821)
Communications: radio wave antennas
Antennas
With lumped reactance for loading antenna
C343S749000, C343S846000
Reexamination Certificate
active
11144145
ABSTRACT:
In an exemplary aspect of the invention, an antenna is disclosed that includes a ground plane and a disk disposed adjacent to the ground plane. The disk has a perimeter. The antenna further includes a loading reflector having an underside. At least a portion of the underside is electrically connected to a portion of the perimeter of the disk. The loading reflector has a width at a widest point, and the width at the widest point of the loading reflector is larger than a thickness of the disk. The disk may be circular or elliptical. The ground plane may include a cavity, where the disk is disposed within an outer border of the cavity. When an elliptical disk is used, the cavity may also be elliptical. An elliptical cavity may have a parabolic surface.
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Alkov Leonard A.
Raytheon Company
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