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US 2003/0197647 A1Published application
Horizontally polarized endfire array
AssigneeNorthrop Grumman Corporation
InventorTimothy G. Waterman
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AssigneeNorthrop Grumman Corporation
InventorTimothy G. Waterman
Estimating the term…
A horizontally polarized end fire antenna array providing 360° scanning over a ground plane including a plurality of radiating cavity backed slots formed by a plurality of mutually separated flat, segments of metallization arranged in a grid and supported by a layer of dielectric material in a coplanar arrangement above and shorted to the ground plane. The side edges of the metallic segments define a plurality of substantially linear crossed slots running in at least two, e.g. orthogonal, directions. Each element of the array consists of four or more adjacent metallized segments having mutually opposing inner corners surrounding a common feed point. RF launch points for the array are formed across the slots of pairs of neighboring segments by conductor elements connected to respective common feed points. Two floating parasitic conducting elements are located in and around the area where the slots cross so as to make the array operate more effectively and comprise a crossed segment of metallization fabricated on the surface of the dielectric layer and a loop of metallization embedded in the center of the dielectric layer beneath the crossed segment.
An endfire antenna for providing a horizontally polarized radiation pattern, comprising:
A method of providing a horizontally polarized endfire radiation pattern, comprising the steps of:
Dependencies are inferred from the claim text.