H - Electricity – 01 – Q
Patent
H - Electricity
01
Q
H01Q 7/00 (2006.01) G08B 13/14 (2006.01) H01Q 19/02 (2006.01)
Patent
CA 2556932
A radio frequency identification (RFID) system is described that utilizes a substantially-contiguous conductive shield to shape an electromagnetic field formed by an antenna for communication with RFID tags. The antenna and the conductive shield have substantially planar forms, and may be mounted to a surface of a check-in / check-out area. The conductive shield is positioned around the antenna and within a plane parallel to the antenna, e.g., within the same plane. The conductive shield shapes the electromagnetic field to extend substantially in a direction perpendicular to the antenna, and prevents the electromagnetic field from forming substantially over the conductive shield.
L'invention porte sur un système d'identification de fréquences radio (RFID) utilisant un blindage conducteur sensiblement continu pour modeler le champ électromagnétique formé par une antenne communiquant avec des marqueurs RFID. L'antenne et le blindage sont sensiblement plans et peuvent se monter sur une surface de vérification entrée/sortie. Le blindage, placé autour de l'antenne et dans un plan parallèle à l'antenne, par exemple le même, prolonge notablement le champ dans une direction parallèle à l'antenne. tout en l'empêchant de se former sensiblement au-dessus du blindage.
Goff Edward D.
Lieffort Seth A.
3m Innovative Properties Company
Smart & Biggar
LandOfFree
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