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:
Dec. 31, 2002
Filed:
May. 07, 2001
Timothy G. Waterman, Eldersburg, MD (US);
Northrop Grumman Corporation, Los Angeles, CA (US);
Abstract
An array of dual trough radiator elements including orthogonally crossed trough waveguide cavities and RF feed members of predetermined adjustable length extending across the cavities from one radiator element to its neighbor, where the feed members are suspended in a slot formed in the body radiator elements and where the inner or proximal ends are connectable to an RF energy source while the outer or distal end is unconnected in an open circuit arrangement. The array also includes intermediate support members of electrical insulation located on an outer surface of the radiator element and a switchable parasitic ground plane consisting of a set of parasitic conductor elements is located on a top surface of the intermediate support member.