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. 18, 2009
Filed:
Jun. 17, 2005
Kenan O. Ezal, Santa Barbara, CA (US);
Thomas L. Larry, Purcellville, VA (US);
Andrew S. Richen, Santa Barbara, CA (US);
Michael R. Wiatt, Ventura, CA (US);
Craig S. Agate, Moorpark, CA (US);
Benjamin D. Werner, Santa Barbara, CA (US);
Michael L. Vanblaricum, Santa Barbara, CA (US);
Kenan O. Ezal, Santa Barbara, CA (US);
Thomas L. Larry, Purcellville, VA (US);
Andrew S. Richen, Santa Barbara, CA (US);
Michael R. Wiatt, Ventura, CA (US);
Craig S. Agate, Moorpark, CA (US);
Benjamin D. Werner, Santa Barbara, CA (US);
Michael L. Vanblaricum, Santa Barbara, CA (US);
Toyon Research Corporation, Goleta, CA (US);
Abstract
A compact, non-phased-array, electronically reconfigurable antenna (ERA) system with at least two operational modes has a first operational objective that is polarization-sensitive null steering (PSNS) and a second operational objective that is direction-finding (DF). The system can rapidly switch between two operational states. In the first state, the system behaves like a polarization filter (PF) and operates as a controlled reception pattern antenna (CRPA), while in the second state the system behaves as an angle-of-arrival (AOA) sensor and operates as a fixed reception pattern antenna (FRPA). The system may include a spiral-mode antenna with both feed and load ports; a mode-forming network; an electronics package; and feedback control electronics. Radio frequency (RF) interference rejection and RF direction-finding may be performed as well as reduction and/or elimination of multiple jamming signals that are intentionally or unintentionally directed at a Global Positioning System (GPS). The determination of direction and location of the source of jamming signals may also be achieved.