Resonant tag

G - Physics – 06 – K

Patent

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Details

G06K 19/067 (2006.01) B32B 27/32 (2006.01) C09J 151/06 (2006.01) C09J 153/02 (2006.01) G08B 13/24 (2006.01)

Patent

CA 2642282

A resonant tag (20) for use with a radio-wave detection system for the prevention of shoplifting or the like which has a coil (1) and capacitor circuit (2, 3) formed on opposite sides of an extremely thin substrate (4) of a biaxially-oriented polypropylene, with one of the capacitor plates (2) formed on one side of the substrate and the coil (1) and other capacitor plate (3) formed on the other side of the substrate (4), and whereby the circuit can provide the same performance of a conventional resonant tag (10) but using a much smaller size.

La présente invention concerne un marqueur résonant destiné à être utilisé avec un système de détection d'ondes radio pour éviter le vol à l'étalage ou analogue. L'invention comporte une bobine et un circuit à condensateurs formés sur des côtés opposés d'un substrat extrêmement mince d'un polypropylène biorienté, l'une des plaques de condensateur étant formée sur un côté du substrat et la bobine et l'autre plaque de condensateur étant formées sur l'autre côté du substrat, et moyennant quoi le circuit montre la même performance qu'un marqueur résonant classique, mais en utilisant un site beaucoup plus petit.

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