Frequency selective surface aids to the operation of rfid...

Details Frequency selective surface aids to the operation of rfid... Frequency selective surface aids to the operation of rfid...

G - Physics

06

K

G06K 7/00 (2006.01) G06K 7/10 (2006.01) H01Q 1/22 (2006.01) H01Q 15/00 (2006.01)

Patent

CA 2672901

The present invention is directed to systems that use frequency selective surfaces (FSS) to aid in the operation of radio frequency identification (RFID) devices and products. In one embodiment, a system for interrogating radio frequency identification (RFID) tags includes a conveyor belt and an RFID reader. The conveyor belt has a first surface and a second surface. The first surface is configured to receive an item to which an RFID tag is affixed and the second surface is configured to slide on a metal slide plate. The RFID reader is configured to transmit instructions embodied in a radio frequency (RF) signal to the RFID tag, wherein the metal slide plate is positioned between the RFID reader and the RFID tag and comprises a frequency selective surface that is substantially transparent to the RF signal.

La présente invention concerne des systèmes utilisant des surfaces à sélectivité de fréquences ou "FSS" (Frequency Selective Surfaces) pour faciliter la mise en AEuvre de dispositifs et produits d'identification par radiofréquences ou "RFID" (Radio Frequency Identification). Dans un mode de réalisation, un système d'interrogation des étiquettes RFID comporte une bande transporteuse et un lecteur RFID. La bande transporteuse comporte deux surfaces. La première surface est configurée pour recevoir un article équipé d'une étiquette RFID, la deuxième surface étant configurée pour glisser sur un patin de métal. Le lecteur RFID est configuré pour émettre à l'étiquette RFID des instructions matérialisées par un signal radiofréquence (RF), le patin de métal, disposé entre le lecteur RFID et l'étiquette RFID, comprenant une surface à sélectivité de fréquence sensiblement transparente au signal radiofréquence.

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