Rfid antenna for use adjacent to conductive elements

Details Rfid antenna for use adjacent to conductive elements Rfid antenna for use adjacent to conductive elements

H - Electricity

01

Q

H01Q 1/22 (2006.01) H01Q 9/06 (2006.01) H01Q 9/28 (2006.01)

Patent

CA 2696704

A radio frequency identification ("RFID") system and RFID tag (500) that include a substrate body (504) having a surface where the substrate body defines a plane of the tag, an RFID integrated circuit (510) disposed on the surface of the substrate body, and an antenna (502) that has an antenna pattern, which is disposed on the substrate body and in electrical communication with the RFID integrated circuit, the antenna generating a radiation pattern with maximum gain along an axis that is substantially coplanar with the tag. The antenna can include a first antenna portion (506) and a second antenna portion (508), the first antenna portion forming an antenna pattern in a counterclockwise direction and the second antenna portion forming an antenna pattern in a clockwise direction.

L'invention concerne un système d'identification radiofréquence (= RFID =) et une étiquette RFID (500) qui comprennent un corps de substrat (504) ayant une surface où le corps de substrat définit un plan de l'étiquette, un circuit intégré RFID (510) disposé sur la surface du corps de substrat, et une antenne (502) qui a un motif d'antenne, qui est disposé sur le corps de substrat et en communication électrique avec le circuit intégré RFID, l'antenne générant un motif de rayonnement avec un gain maximum le long d'un axe qui est essentiellement coplanaire à l'étiquette. L'antenne peut comprendre une première partie d'antenne (506) et une seconde partie d'antenne (508), la première partie d'antenne formant un motif d'antenne dans le sens contraire des aiguilles d'une montre, et la seconde partie d'antenne formant un motif d'antenne dans le sens des aiguilles d'une montre.

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