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:
Jun. 15, 2010
Filed:
Jun. 11, 2008
Sudhakar K. Rao, Churchville, PA (US);
Chris G. Baran, Hamilton, NJ (US);
Chih-chien Hsu, Cherry Hill, NJ (US);
Surjit S. Dhillon, Robbinsville, NJ (US);
Sudhakar K. Rao, Churchville, PA (US);
Chris G. Baran, Hamilton, NJ (US);
Chih-Chien Hsu, Cherry Hill, NJ (US);
Surjit S. Dhillon, Robbinsville, NJ (US);
Lockheed Martin Corporation, Bethesda, MD (US);
Abstract
An antenna system for transmitting and/or receiving radio frequency (RF) signals in multiple frequency bands includes a horn antenna and a feed network. The horn antenna may transmit and/or receive RF signals in multiple frequency bands that are spread over more than an octave bandwidth with at least a 2.44-to-1 bandwidth ratio. The horn antenna includes a throat, an aperture, and an interior surface. The feed network includes a first waveguide section, a first junction, one or more first filters, and a first step-down waveguide section. The first waveguide section can provide a matching network and transmit and/or receive the RF signals in the multiple frequency bands. The first junction can transmit and/or receive the RF signals in first selected band(s) of the multiple frequency bands. The first step-down waveguide section may transmit and/or receive the RF signals in second selected band(s) of the multiple frequency bands.