Electronic tag and contactless object identification system, particularly for metal objects

摘要

The label comprises a flat plastic ring (5) fixed to the bottle around its tap connection, a nonmagnetic sheet (10) of low electrical resistivity, an antenna (6) for electromagnetic wave transmission and reception and a highly permeable alloy sheet (60) with low coercive force or remanence. The antenna is a coil (7) wound on a ferrite rod (8) and connected to an integrated circuit chip (9). Its axis (X) is parallel and tangential to the surface of the ring. The antenna and alloy sheet are pref. encapsulated together in insulating plastic (12).