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. 04, 1999
Filed:
Mar. 18, 1997
Applicant:
Inventor:
J J Lee, Irvine, CA (US);
Assignee:
Raytheon Company, Lexington, MA (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01Q / ;
U.S. Cl.
CPC ...
343767 ; 343771 ; 333237 ;
Abstract
A compact high gain VHF antenna for airborne synthetic aperture radar to detect targets concealed behind trees and forests. The antenna is formed by cutting a slotline in the middle of the top wall of a very thin waveguide along its axis. The waveguide can be folded and mounted on the underside of the wings of an aircraft with minimum protrusion and wing drag. The antenna produces a downward and side-looking beam with horizontal polarization for maximum foliage penetration and target detection. The antenna design can be scaled to any frequency for ground based and shipboard applications.