Combination radio frequency identification transponder (RFID tag) and magnetic electronic article surveillance (EAS) tag

• US 20050001725A1
• Filed: 02/04/2004
• Published: 01/06/2005
• Est. Priority Date: 12/31/1997
• Status: Active Grant

• Current Assignee: Alejandro Gabriel Schrott, Dah-Weih Duan, Michael John Brady, Paul Andrew Moskowitz, Richard Joseph Gambino, Robert Jacob Von Gutfeld, Thomas Anthony Cofino
• Original Assignee: Alejandro Gabriel Schrott, Dah-Weih Duan, Michael John Brady, Paul Andrew Moskowitz, Richard Joseph Gambino, Robert Jacob Von Gutfeld, Thomas Anthony Cofino
• Inventors: Schrott, Alejandro Gabriel, Duan, Dah-Weih, Brady, Michael John, Moskowitz, Paul Andrew, Cofino, Thomas Anthony, Von Gutfeld, Robert Jacob, Gambino, Richard Joseph
• Granted Patent: US 7,002,475 B2
• Time in Patent Office: Days
• US Class Current: 340/572.700
• CPC Class Codes: G06K 19/041 Constructional details G06K19/06 takes precedence
• CPC Class Codes: G06K 19/07749 the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card
• CPC Class Codes: G06K 19/07786 the antenna being of the HF type, such as a dipole
• CPC Class Codes: G08B 13/2408 using ferromagnetic tags
• CPC Class Codes: G08B 13/2414 using inductive tags
• 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: G08B 13/2437 Tag layered structure, processes for making layered tags
• CPC Class Codes: G08B 13/244 Tag manufacturing, e.g. continuous manufacturing processes
• CPC Class Codes: G08B 13/2442 Tag materials and material properties thereof, e.g. magnetic material details
• CPC Class Codes: G08B 13/2448 Tag with at least dual detection means, e.g. combined inductive and ferromagnetic tags, dual frequencies within a single technology, tampering detection or signalling means on the tag
• CPC Class Codes: H01L 2224/48091 Arched
• CPC Class Codes: H01L 2924/00 Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
• CPC Class Codes: H01L 2924/00014 the subject-matter covered by the group, the symbol of which is combined with the symbol of this group, being disclosed without further technical details
• CPC Class Codes: H01L 2924/01078 Platinum [Pt]
• CPC Class Codes: H01L 2924/01079 Gold [Au]
• CPC Class Codes: H01L 2924/10253 Silicon [Si]
• CPC Class Codes: H01L 2924/3025 Electromagnetic shielding

Abstract

A combination of a radio frequency identification transponder (RFID Tag) and to a magnetic electronic article surveillance (EAS) device is disclosed. The present invention relates generally to radio frequency identification (RFID) systems, and more specifically to RFID transponders for use in RFID systems and the method for their assembly.

Claims

1. An apparatus comprising:

(a) a radio frequency (RF) transponder comprising an integrated circuit package containing at least electronic circuitry and memory, and an antenna operatively coupled to the integrated circuit package; and

(b) a non-linear magnetic material providing a varying electronic article surveillance magnetic field in response to an interrogating magnetic field, the non-linear magnetic material providing at least a portion of the tag antenna.

2. The apparatus of claim 1, wherein the non-linear magnetic material further comprises an electrically conducting material layer affixed thereto.

3. The apparatus of claim 1, wherein said non-linear magnetic material further comprises a parasitic element of the antenna.

4. The apparatus of claim 1, wherein said non-linear magnetic material further comprises a tuning element of the antenna.

5. The apparatus of claim 1, wherein said radio frequency (RF) transponder comprises a power supply.

6. The apparatus of claim 5, wherein said power supply is contained in said integrated circuit package.

7. The apparatus of claim 1, wherein said integrated circuit package comprises a chip having the antenna operatively coupled thereto.

8. The apparatus of claim 7, wherein a power supply is contained in said chip.