RFID Device with Elongated Structure

• US 20140209694A1
• Filed: 09/07/2012
• Published: 07/31/2014
• Est. Priority Date: 09/08/2011
• Status: Active Grant

• Current Assignee: Avery Dennison Retail Information Services LLC (Avery Dennison Corporation)
• Original Assignee: Avery Dennison Corporation
• Inventors: Forster, Ian James
• Granted Patent: US 9,767,405 B2
• Time in Patent Office: Days
• US Class Current: 235/492
• CPC Class Codes: G06K 19/07758 arrangements for adhering the record carrier to further objects or living beings, functioning as an identification tag
• CPC Class Codes: G06K 19/07771 the record carrier comprising means for minimising adverse effects on the data communication capability of the record carrier, e.g. minimising Eddy currents induced in a proximate metal or otherwise electromagnetically interfering object
• CPC Class Codes: G06K 19/07773 Antenna details antennas for wireless devices, e.g. RFID tags, in general H01Q1/22
• CPC Class Codes: G06K 19/07786 the antenna being of the HF type, such as a dipole
• CPC Class Codes: G06K 19/0779 the antenna being foldable or folded
• CPC Class Codes: G06K 19/07798 part of the antenna or the integrated circuit being adapted for rupturing or breaking, e.g. record carriers functioning as sealing devices for detecting not-authenticated opening of containers electronic seals G09F3/03
• CPC Class Codes: G08B 13/2417 having a radio frequency identification chip
• CPC Class Codes: G08B 13/2434 Tag housing and attachment details
• CPC Class Codes: H01Q 1/2225 used in active tags, i.e. provided with its own power source or in passive tags, i.e. deriving power from RF signal
• CPC Class Codes: H01Q 9/26 with folded element or elements, the folded parts being spaced apart a small fraction of operating wavelength resonant loop antennas H01Q7/00

Abstract

A radio frequency identification (“RFID”) antenna structure such as may be found on a tag, label or inlay for use with consumer products that has a conductive surface. The RFID structure of the present invention can be attached to the conductive surface without significantly modifying the performance of the RFID device. The RFID device has first and second portions, with the first portion having a first antenna pattern and the second portion including an elongate section for attachment to the consumer item.

Claims

1. A RFID antenna structure for use with a RFID device, comprising;

a conductive material having first and second portions;

the first portion having a first antenna pattern and the second portion having a second antenna pattern distinct from the first antenna pattern;

the second antenna portion cooperates with a conductive surface; and

wherein the second portion is folded on itself and attached to a part of the conductive surface such that the second portion does not significantly modify performance of the first portion.

2. The RFID antenna structure of claim 1, wherein the second portion is an elongated shape.

4. The RFID antenna structure of claim 1, wherein the first portion is a dipole antenna.

5. The RFID antenna structure of claim 1, wherein the first portion includes a pattern that is formed from conductive material.

6. A RFID inlay comprising the antenna structure of claim 1 and a chip.

7. The RFID antenna structure of claim 1, wherein the antenna structure is a patterned aluminum foil.

8. The RFID antenna structure of claim 1, wherein the antenna structure is selected from the group consisting of a dipole antenna, a slot antenna, and a loop antenna.

14. An RFID device including the antenna structure of claim 1, a chip and a substrate, wherein the antenna structure is applied to a surface of the substrate.

15. The RFID device of claim 14, wherein the substrate is a label structure and the label structure has a fold line which runs about half way through the length of the structure and allows the label structure to be folded on itself to cover the first portion of the antenna.

16. The RFID device of claim 14, wherein the substrate includes at least one extended portion.

17. The RFID device of claim 14, wherein the second portion of the antenna structure is placed on the extended portion.

18. The RFID device of claim 14, wherein the substrate serves as the conductive portion that formed the antenna structure.

19. The RFID device of claim 14, wherein the substrate is approximately two times the size of the antenna structure.

20. The RFID device of claim 14, wherein the first portion of the antenna and the second portion of the antenna are concealed by the substrate when the substrate is folded over on itself.

21. The RFID device of claim 14, wherein the substrate has a plurality of extended portions.

22. The RFID device of claim 14, wherein more than one antenna structure of claim 1 is applied at least one chip and the substrate.

23. The RFID device of claim 14, wherein the device has an EAS function.

24. The RFID device of claim 14, where the device functions at one of an ultra high, high or low frequency range.

25. The RFID device of claim 16, wherein the at least one extended portion extends from at least one longitudinal edge of the label substrate.

26. The RFID device of claim 16, wherein the at least one extended portion extends from at least one transverse edge of the label substrate.

3. A RFID device for use with jewelry, comprising

a RFID device, the RFID device having first and second antenna sections which are distinct from one another;

a label substrate sized and configured to accommodate the RFID device;

at least one piece of jewelry;

the RFID device is provide on a surface of the label substrate and the label substrate is folded over the RFID device; and

the label with the RFID device is attached to the at least one piece of jewelry without loss of performance of the device when the RFID device couples to the at least one piece of jewelry.

9. The RFID device of claim 3, wherein the label structure contains at least one extended portion.

10. The RFID device of claim 3, wherein the label structure has a plurality of extended portions.

11. The RFID device of claim 9, wherein the label structure is attached to the at least one piece of jewelry by the extended portion.

12. The RFID device of claim 9, wherein the extended portion is attached by wrapping it onto itself and through an opening in the jewelry.

13. The RFID device of claim 12, wherein the wrapping of the antenna effectively retunes the antenna.