System and method for interrogating and locating a...

Communications: electrical – Selective – Interrogation response

Reexamination Certificate

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C340S010100, C340S539100, C340S539150, C340S539320, C340S572900, C342S165000, C342S011000, C342S013000, C342S042000, C342S045000, C343S786000, C343S841000, C343S907000, C343S910000, C343S91100R

Reexamination Certificate

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07573369

ABSTRACT:
A directional warning system and a method of warning of friendly forces. In one embodiment, the system includes: (1) a conductive shield having an opening at an end thereof and a radio frequency absorptive material located on an inner surface thereof, (2) a Luneberg lens located within the conductive shield and (3) a plurality of feed horns located proximate a portion of the Luneberg lens that is distal from the opening and arranged relative thereto based on a zone-of-interest with which the directional warning system may be associated.

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patent: 2005/0212676 (2005-09-01), Steinberg
Hayles, et al., “System and Method for Highly Directional Electronic Identification and Communication and Combat Identification System Employing the Same” U.S. Appl. No. 10/972,958, filed Oct. 25, 2004.

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