Improvements in an apparatus and method of use of...

G - Physics – 11 – C

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G11C 17/16 (2006.01) G06K 19/07 (2006.01) G11C 17/18 (2006.01)

Patent

CA 2185901

A radiofrequency identification tag integrated circuit is provided with an antifuse circuit (10) for field programmability at high speed and low power using transient radiofrequency pulses, a self-calibration circuit (38, 40, 44, 46, 48, 50) for calibrating a receiver oscillator (34) with an external calibration reference signal, a communications bit and frame synchronization circuit (72, 74) for recognizing a received unique pattern violating an error detection code check, a carrier signal modulation (80, 82, 84) scheme for remotely supplying data and power to the tag, and a power supply rectifier including Schottky diodes (96, 98, 100, 102) fabricated on sapphire (106) or a passivated surface (122) for inter-diode isolation and isolation from other circuits.

Un circuit intégré à étiquettes d'identification de radiofréquence est doté d'un circuit anti-fusible (10) permettant une programmation par l'utilisateur à vitesse élevée et à faible consommation d'énergie à l'aide d'impulsions de radiofréquence transitoires, un circuit d'auto-étalonnage (38, 40, 44, 46, 48, 50) destiné à l'étalonnage de l'oscillateur (34) d'un récepteur avec un signal de référence d'étalonnage extérieur, un circuit (72, 74) de synchronisation de bits et de blocs de transmission destiné à reconnaître un modèle unique reçu violant un contrôle de code de détection d'erreur, un système de modulation (80, 82, 84) de signal de porteuse destiné à alimenter à distance l'étiquette en donnée et en énergie, ainsi qu'un redresseur d'alimentation doté de diodes Schottky (96, 98, 100, 102) fabriqué sur du saphir (106) ou une surface passivée (122) pour l'isolation inter-diode et l'isolation vis-à-vis d'autres circuits.

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