Techniques for detecting rfid tags in electronic article...

G - Physics – 08 – B

Patent

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G08B 13/24 (2006.01)

Patent

CA 2610432

Disclosed are a system and method to detect RFID tags in electronic article surveillance systems using frequency mixing. The system includes an RFID module that includes an energy coupler to receive transmitted energy that includes a first signal at a first frequency and a second signal at a second frequency, and a mixing element to mix the first and second signals, to generate a third signal at a third frequency, and the energ coupler to transmit the third signal to an EAS detection system. Other embodiments are described and claimed.

L'invention concerne un système et un procédé de détection d'étiquettes d'identification par radiofréquence dans des systèmes de surveillance d'articles électroniques utilisant le mélange de fréquences. Le système comprend un module d'identification par radiofréquence pourvu d'un coupleur destiné à recevoir l'énergie transmise qui comprend un premier signal à une première fréquence et un second signal à une seconde fréquence, et un élément de mélange pour mélanger les premier et second signaux pour générer un troisième signal à une troisième fréquence, le coupleur d'énergie envoyant le troisième signal à un système de détection et de surveillance d'articles électroniques. D'autres modes de réalisation sont également décrits et revendiqués.

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