A breakthrough RFID tag compatible with metal objects

Leti—working on a project for Montpellier-based start-up Oridao—has developed a miniature RFID tag for all kinds of metal objects, from those no bigger than a centimeter to those the size of a filing cabinet. Metal objects drastically diminish the effectiveness and bandwidth of the tiny antennas in RFID tags. Leti engineers came up with a unique antenna topology in two versions: one for American frequencies and one for European frequencies. They have a range of about one meter, making them entirely suitable for Oridao’s target applications.
Oridao makes secure RFID systems for part traceability and surveillance for industrial and military applications. The company has been working with Leti since 2011 and is planning two new R&D projects: one to develop RFID tags with pressure sensors, and one to develop flexible RFID tags for metal parts with non-planar surfaces.

Contact: laurent.dussopt@cea.fr

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