High-frequency identification means with passive electronic...

Details High-frequency identification means with passive electronic... High-frequency identification means with passive electronic...

G - Physics

06

K

G06K 19/07 (2006.01) G06K 7/00 (2006.01) G06K 19/08 (2006.01)

Patent

CA 2252411

The invention relates to a high-frequency identification means (IM) with a passive electronic data storage medium, comprising a processor, an electronic control unit and a memory, as well as a receiving aerial (15) for receiving operating energy and for the non-contact transmission of HF signals (20) to an assigned write/read station (WR) having a transmission aerial (24). The carrier frequency (fr) designated by the transmission aerial is above 1 MHz so as to allow for high communication output. An external capacitor (Ce) is connected in parallel to the receiving aerial (15), whereby the capacity of the external capacitor (Ce) is greater, preferably several times greater, than the capacity of the internal capacitor (Ci) of the data support medium (MI). This allows for significantly improved communication output, especially with small identification means.

L'invention concerne un moyen d'identification à haute fréquence (IM) avec support de données électronique passif (MI), contenant un processeur, une unité électronique de commande et une mémoire ainsi qu'une antenne de réception (15) servant à recevoir une énergie de fonctionnement et à transmettre sans contact des signaux HF (20) à un poste d'écriture et de lecture associé (WR) comportant une antenne d'émission (24). La fréquence porteuse fr déterminée par l'antenne d'émission est supérieure à 1 MHz afin de pouvoir atteindre des puissances de communication élevées. Un condensateur externe (Ce) est monté en parallèle avec l'antenne de réception (15), la capacité du condensateur externe (Ce) étant supérieure à la capacité du condensateur interne (Ci) du support de données (MI), et correspondant de préférence à un multiple de cette dernière. Il est ainsi possible d'obtenir des puissances de communication nettement plus élevées, principalement pour des moyens d'identification de faibles dimensions.

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