Planar wideband antennas
AssigneeVirginia Tech Inellectual Properties Inc.
InventorsSeong-Youp Suh, Warren L. Stutzman
Life of this patent
Estimating the term…
Abstract
Wideband antennas with omnidirectional coverage have both military and commercial applications. In one embodiment, the Planar Inverted Cone Antenna (PICA) is composed of a single flat element vertically mounted above a ground plane. A geometry of Planar Inverted Cone Antenna (PICA) is based on the conventional circular-disc antenna with trimmed top part having the shape of a planar-inverted cone. in a second embodiment, the Fourpoint antenna also provides balanced impedance over the operating band and has useful radiation patterns and dual polarization over its operating frequency.
Claims13
An antenna element, comprising:
- a ground plane;
- and
- a flat radiating element perpendicular to the ground plane, said flat radiating element having a shape of an inverted cone intersecting an elliptical curve.
An antenna element, comprising:
- a dielectric substrate;
- a ground plane displaced from and parallel to said dielectric substrate;
- four quadrilateral radiating elements, positioned on a top side of said dielectric substrate away from said ground plane, wherein each of said radiating elements comprises a four sided polygon with two adjacent shorter sides forming a right angle there between and two longer adjacent sides having an acute angle there between, said radiating elements positioned diagonally to each other;
- and
- at least two feed lines connecting to feed points located near an inner corner on diametrically opposed ones of said four quadrilateral radiating elements.
Dependencies are inferred from the claim text.