Using reactive coupling of a printed RFID chip on a strap to allow the printed material to be over-laminated with a barrier film against oxygen and moisture ingress

摘要

An RFID device using a printed electronic circuit (PEC) is disclosed. The PEC or electronic circuit which includes printed elements is coupled to a conductor structure, such as an antenna, by reactive means, such as an electric field, a magnetic field, or a combination of both. The RFID device comprises a base layer and a conductive layer (antenna structure) disposed over the base layer. A dielectric layer is then disposed over at least a portion of the conductive layer. A barrier layer is then disposed over the dielectric layer and fully covers the PEC to protect against oxygen and moisture ingress. Further, the PEC is typically attached to a carrier or strap to facilitate coupling between the antenna structure and PEC. In another embodiment, the barrier layer can be replaced with an adhesive layer that acts as both the barrier layer and the dielectric layer.