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. 20, 2013
Filed:
Feb. 25, 2010
Sudhakar K. Rao, Churchville, PA (US);
Chih-chien Hsu, Cherry Hill, NJ (US);
Gerard J. Matyas, Bala Cynwyd, PA (US);
Sudhakar K. Rao, Churchville, PA (US);
Chih-Chien Hsu, Cherry Hill, NJ (US);
Gerard J. Matyas, Bala Cynwyd, PA (US);
Lockheed Martin Corporation, Bethesda, MD (US);
Abstract
A dual-band antenna system configured to transmit and/or receive microwave beams over two or more frequency bands with substantially similar beam widths and substantially similar sidelobe levels is disclosed. The antenna system includes at least one reflector and at least one feed horn, the horn configured to provide a first efficiency over a first frequency band and lower efficiencies over one or more second frequency bands. The horn includes a substantially conical wall having an internal surface with a variable slope. The internal surface includes one or more slope discontinuities, wherein the slope discontinuities are configured to generate primarily TEmodes within the first frequency band and within the second frequency bands and generate TMmodes substantially only within the second frequency bands.