Electromagnetic pathways to eliminate RFID limitations

• US 20060103532A1
• Filed: 11/12/2004
• Published: 05/18/2006
• Est. Priority Date: 11/12/2004
• Status: Abandoned Application

• Current Assignee: International Paper Company
• Original Assignee: International Paper Company
• Inventors: Van Fleet, Steven Robert
• Application Number:
  US10/987,652
• Publication Number:
  US 20060103532A1
• Time in Patent Office: Days
• US Class Current: 340/572.100
• CPC Class Codes: G06K 19/07796 arrangements on the record carrier to allow stacking of a plurality of similar record carriers, e.g. to avoid interference between the non-contact communication of the plurality of record carriers
• CPC Class Codes: G06K 7/10178 including auxiliary means for focusing, repeating or boosting the electromagnetic interrogation field comparable booster antennas integrated on the record carrier itself G06K19/07794
• CPC Class Codes: G06K 7/10336 the antenna being of the near field type, inductive coil

Abstract

A system for enhanced substantially simultaneously monitoring multiple aggregated RFID-tagged products comprising an RFID reader disposed remote from said aggregated RFID-tagged products and a supplemental antenna disposed intermediate the RFID reader and the RFID-tagged products. The supplemental antenna includes at least a portion thereof in substantially non-interrupted communication with multiple ones of the RFID tags associated with the RFID-tagged products and at least a portion thereof being in substantially non-interrupted communication with said antenna associated with said RFID reader, whereby said supplemental antenna enhances the transmission of coded information between the reader and the RFID tags associated with the RFID tagged products. A slip sheet having a supplemental antennas associated therewith is disclosed.

Claims

1. A system for enhanced substantially simultaneously monitoring multiple aggregated RFID-tagged products comprising an RFID reader disposed remote from said aggregated RFID-tagged products, said reader including an antenna for the transmission and reception of RF signals in the direction of said RFID-tagged products, a supplemental antenna disposed intermediate said antenna associated with said RFID reader and said RFID-tagged products, said supplemental antenna including at least a portion thereof in substantially non-interrupted RF communication with multiple ones of said RFID tags associated with said RFID-tagged products and at least a portion thereof being in substantially non-interrupted RF communication with said antenna associated with said RFID reader, whereby said supplemental antenna enhances the transmission of coded information between said reader and said RFID tags associated with said RFID tagged products.

2. The system of claim 1 wherein said RFID-tagged products are disposed in rows or layers on a pallet.

3. The system of claim 1 and including a carrier to which said supplemental antenna is mounted.

4. The system of claim 3 wherein said carrier is substantially transparent to RF signals.

5. The system of claim 3 wherein said RFID-tagged products are disposed in layers or multiple adjacent containers and said carrier comprises a slip sheet having at least one supplemental antenna associated therewith and disposed in RF frequency transmission relationship to said RFID-tagged products.

6. The system of claim 1 and including RF signal interrupters interposed between said at least one antenna associated with said reader and said RFID-tagged products.

7. The system of claim 1 and including a multiplicity of supplemental antennas disposed between said antenna associated with said RFID reader and said RFID-tagged products.

8. The system of claim 2 wherein said supplemental antennas are associated with a slip sheet disposed between rows layers or groupings of said RFID-tagged products.

9. The system of claim 8 wherein said slip sheet comprises a paper material.

10. The system of claim 8 wherein said slip sheet is dimensionally greater in at least one side-to-side direction than said aggregated RFID-tagged products on said pallet and at least one side edge of said slip sheet is provided with means for enhancing the folding of said at least one side edge in a direction toward or away from said pallet.

11. A slip sheet for enhancing the transmission of RF signals between a first antenna associated with a remote RFID reader and multiple RFID tags associated with RFID-tagged products disposed in an aggregated relationship to one another comprising a planar member having affixed thereon at least one antenna suitable for the receipt and transmission of RF signals and disposed between said first antenna and said RFID-tagged products.

12. The slip sheet of claim 11 wherein said planar member comprises a paper material.

13. The slip sheet of claim 11 wherein said planar member comprises a first surface and a plurality of said at least one antenna affixed in spaced apart locations on said first surface.

14. The slip sheet of claim 13 wherein said plurality of at least one antenna comprises an elongated loop having first and second legs, said first leg being disposed in RF-transmission relationship to said at least one of said RFID-tagged products and in RF-transmission relationship to an antenna associated with said RFID reader.

15. The slip sheet of claim 11 and including a further planar member overlaid over said planar member with said at least one antenna being interposed in layered relationship with and between said planar member and said further planar member.

16. The slip sheet of claim 11 wherein said at least one antenna is associated with said slip sheet by either gluing, embossing, embedding, plasticizing, or printing.