Edge on foam tags
View Patent ↗An RFID antenna structure is disclosed that is designed to operate in proximity to metal surfaces. The RFID antenna structure is placed at 90 degrees to the surface of the metallic object, allowing it to operate with minimal separation from the edge of the RFID antenna structure to the metallic object. In another embodiment, the RFID antenna structure comprises an anti-tamper embodiment wherein a RFID tag device is applied to twist and flip-top cap containers, such that tearing along the perforations on the cap disables the RFID tag device.
1. A RFID antenna structure designed to operate in proximity to conductive surfaces, comprising:
an RFID inlay made by flat roll to roll lamination having at least one mounting surface;
a pair of plastic layers; and
a metal layer; and wherein the RFID inlay is sandwiched between the pair of plastic layers by lamination; and wherein the RFID inlay is positioned 90 degrees to the metal layer on an edge of the RFID inlay such that the edge is in proximity to the metal layer allowing the RFID antenna structure to operate with a distance from the edge of the RFID inlay to the metal layer and the RFID inlay is either wrapped in a number of shapes, wrapped around a form and placed in a cavity, or incorporated into a structure by injection molding and the RFID inlay is capable of functioning on a metal surface.
2. The RFID antenna structure of claim 1 , wherein the antenna is a dipole antenna.
3. The RFID antenna structure of claim 1 , wherein the RFID antenna structure comprises a biaxially-oriented polypropylene face.
4. The RFID antenna structure of claim 1 , wherein the antenna structure is constructed out of aluminum.
5. The RFID antenna structure of claim 1 , wherein the antenna structure is constructed out of copper.
6. The RFID antenna structure of claim 1 , wherein the antenna structure is constructed out of silver.
7. The RFID antenna structure of claim 1 , wherein the RFID antenna structure is a hexagonal cross-sectional structure.
8. A RFID antenna structure designed to operate in proximity to conductive surfaces, comprising:
RFID inlay having at least one mounting surface, formed into a circle and positioned within an interior of a lid of a container and the RFID inlay is positioned against threads of the lid;
a plastic layer; and
a metal layer; and
wherein the RFID inlay is extruded into the plastic layer and is centrally disposed of the extruded plastic layer; and wherein the RFID inlay is positioned 90 degrees to the metal layer on an edge of the RFID inlay such that the edge is in proximity to the metal layer allowing the RFID antenna structure to operate with a distance from the edge of the RFID inlay to the metal layer.
9. The RFID antenna structure of claim 8 , wherein the antenna structure comprises a permanent adhesive to secure the RFID antenna structure to the lid.
10. The RFID antenna structure of claim 8 , wherein the RFID inlay is positioned down a center of an extrusion.
11. The RFID antenna structure of claim 8 , wherein the antenna is a dipole antenna.
12. A RFID antenna structure designed to operate in proximity to conductive surfaces, comprising:
an RFID inlay;
a plastic component; and
a metal layer; and
wherein the RFID inlay is wrapped in spiral form around a round object having a hole so that the RFID inlay is wrapped around an internal surface of the round object; and wherein the RFID inlay is positioned 90 degrees to the metal layer on an edge of the RFID inlay such that the edge is in proximity to the metal layer allowing the RFID antenna structure to operate with a distance from the edge of the RFID inlay to the metal layer.
13. The RFID antenna structure of claim 12 , wherein the object is fixed by a bolt or a screw to a surface.
14. The RFID antenna structure of claim 12 , wherein the RFID inlay is wrapped into a flat edge spiral.