The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 14, 2002
Filed:
Jun. 19, 2000
Daniel Davis, Baltimore, MD (US);
Northrop Grumman Corporation, Los Angeles, CA (US);
Abstract
A plurality of paraboloidal reflector cells are mounted side by side in a concave spherical array in the interior of a toroidal support structure. Groups of adjoining reflector cells are selected for activation to point the antenna in a given direction. The activated elements of the group operate to roughly steer a beam in the desired direction, by switching feeds. Inter-element time delay steering is then used to precisely steer the beam to the desired direction. The groups of reflector cells are selected to provide a required number of pointing angles within a small cone, determined by the center of the group. Each reflector cell, moreover, includes a planar array of feed elements located at or forward of the focal point of its respective reflector element. A predetermined number of feed elements in each feed array of a beam group are selected for operation at any one time and comprises feed elements pointing closest to the desired beam position. A composite beam is then formed from all of the feed elements in the beam group.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile