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:
Aug. 17, 2004
Filed:
Jul. 03, 2002
Applicant:
Inventors:
Brent T. Toland, Manhattan Beach, CA (US);
Kwok-Kee Chan, Brampton, CA;
Assignee:
Northrop Grumman Corporation, Los Angeles, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01Q 1/300 ;
U.S. Cl.
CPC ...
H01Q 1/300 ;
Abstract
An antenna array ( ) comprises a plurality of antenna elements ( ) creating a plurality of radio frequency waves. The central portion ( ) of opposed edges of the waves are guided with conductive material. The waves are isolated from each other by non-conductive (cir or dielectric) spaces ( ). The waves are guided by tapered surfaces ( ) having a predetermined thickness and emitted through a mouth having a mouth length (M). The ratio of the predetermined thickness to the mouth length is increased until there is no substantial increase in the high frequency limit of the array.