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:
Nov. 04, 2003
Filed:
May. 03, 2002
Applicant:
Inventor:
Daniel T. McGrath, McKinney, TX (US);
Assignee:
Raytheon Company, Lexington, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01Q 1/38 ;
U.S. Cl.
CPC ...
H01Q 1/38 ;
Abstract
A reflect array antenna comprises a non-electrically conductive substrate with an array of antenna elements supported on the substrate. Each antenna element comprises a plurality of patch radiating elements arranged in rows and columns. Each patch radiating element comprises a plurality of notches formed in the element, the notches being angularly displaced around the circumference of the element. A plurality of stub short transmission lines are individually positioned in each of the plurality of notches and a plurality of switches individually couple one end of a notch to one of the plurality of stub short transmission lines.