Around-a-mast quadrifilar microstrip antenna
First Claim
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1. An Around-A-Mast quadrifilar microstrip antenna for the periscope of a submarine which comprises:
- a cylinder of a non-conductive material having metal plated at the top, bottom and inner surfaces thereof and forming a common ground plane from the top, bottom and inner surfaces;
a plurality of generally parallel conductive bands electrically isolated from said common ground plane on the outer surface of said cylinder;
connecting means for each member of said plurality of conductive bands on the outer surface of said cylinder; and
matching networks for delaying appropriately the outputs from each member of said plurality of conductive bands on the outer surface of said cylinder.
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Abstract
A down link UHF antenna is designed which includes four equispaced arms ml plated at an angle on a fiberglass cylinder. A coaxial connector is connected to each of the four arms with the metal plated inner surface as the common ground.
35 Citations
11 Claims
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1. An Around-A-Mast quadrifilar microstrip antenna for the periscope of a submarine which comprises:
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a cylinder of a non-conductive material having metal plated at the top, bottom and inner surfaces thereof and forming a common ground plane from the top, bottom and inner surfaces; a plurality of generally parallel conductive bands electrically isolated from said common ground plane on the outer surface of said cylinder; connecting means for each member of said plurality of conductive bands on the outer surface of said cylinder; and matching networks for delaying appropriately the outputs from each member of said plurality of conductive bands on the outer surface of said cylinder. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification