LOW-PROFILE ANTENNA-LESS RFID TAGS AND INTEGRATED CIRCUIT WIRELESSTRANSMISSION APPARATUS

摘要

Disclosed embodiments include a low-profile, high-permeability antenna-less radio frequency identification (RFID) tag (100; 300) for use on large metal objects and other types of objects for which traditional RFID technologies will not work or do not work well. High- permeability materials (115) are in contact with a metal surface (105; 305), such as a metal container or metallic tape, diverting current into the tag integrated circuit (IC) (125). This type of tag is essentially 'antenna-less' as it uses the ground plane or metallic object to excite currents through the IC. Tags using high-permeability materials in this manner are significantly thinner than those developed using other methods.