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:
Jul. 30, 2013
Filed:
Dec. 19, 2011
Brian J. Herting, Marion, IA (US);
James B. West, Cedar Rapids, IA (US);
Wajih A. Elsallal, Cedar Rapids, IA (US);
John C. Mather, Cedar Rapids, IA (US);
Bret W. Spars, Marion, IA (US);
Daniel L. Woodell, Cedar Rapids, IA (US);
Brian J. Herting, Marion, IA (US);
James B. West, Cedar Rapids, IA (US);
Wajih A. ElSallal, Cedar Rapids, IA (US);
John C. Mather, Cedar Rapids, IA (US);
Bret W. Spars, Marion, IA (US);
Daniel L. Woodell, Cedar Rapids, IA (US);
Rockwell Collins, Inc., Cedar Rapids, IA (US);
Abstract
An aperture of an antenna for a radar system comprises a first waveguide comprising a first protrusion and a second protrusion, each protrusion extending longitudinally along one side of the first waveguide. The aperture further comprises a second waveguide comprising a third protrusion and a fourth protrusion, each protrusion extending longitudinally along one side of the second waveguide. The first and third protrusions and second and fourth protrusions adjoin to form a radio frequency choke at least partially suppressing cross polarization of radio frequencies between the first and second waveguides.