Antenna lattice for electronic article surveillance system

Details Antenna lattice for electronic article surveillance system Antenna lattice for electronic article surveillance system

G - Physics

08

B

G08B 13/24 (2006.01) H01Q 7/04 (2006.01)

Patent

CA 2120183

An antenna lattice for use in a magnetically based electronic article surveillance system. The lattice includes a field-producing coil assembly which includes a pair of trapezoidal-shaped segments, each having a diagonally extending lower portion, the segments being juxtaposed in a minor image so that the diagonal portions are opposite each other. The segments are connected so that vertical components of the currents in the diagonal sections at least partially cancel. Preferably, top horizontal sections of each segment are located at different levels, thereby extending the upper coverage, and a detector coil preferably also juxtaposed extends above the top horizontal section of the field-producing coil to further extend the range of detection.

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