RFID tag assembly and system

• US 7,075,435 B2
• Filed: 08/08/2001
• Issued: 07/11/2006
• Est. Priority Date: 08/11/2000
• Status: Expired due to Fees

• Current Assignee: Escort Memory Systems (Datalogic S.p.A.)
• Original Assignee: Escort Memory Systems (Datalogic S.p.A.)
• Inventors: Jesser, Edward A.
• Primary Examiner(s): PHAM, TOAN NGOC
• Application Number:
  US09/925,228
• Publication Number:
  US 20040046663A1
• Time in Patent Office: 1,798 Days
• Field of Search: 340/572.1, 340/572.4, 340/572.5, 340/572.7, 340/572.8, 340/5.92, 340/10.1, 340/10.51, 340/572.6
• US Class Current: 340/572.1
• CPC Class Codes: B65D 2203/10 Transponders
• CPC Class Codes: B65D 5/4233 Cards, coupons, labels or the like formed separately from the container or lid
• CPC Class Codes: G01N 2035/00782 reprogrammmable code
• CPC Class Codes: G06K 17/0022 arrangements or provisious for transferring data to distant stations, e.g. from a sensing device "transfer between computer elements G06F13/00 "; data-transmission H04L
• CPC Class Codes: G06K 19/0723 the record carrier comprising an arrangement for non-contact communication, e.g. wireless communication circuits on transponder cards, non-contact smart cards or RFIDs
• 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 19/07756 the connection being non-galvanic, e.g. capacitive
• CPC Class Codes: G06K 19/0776 the adhering arrangement being a layer of adhesive, so that the record carrier can function as a sticker
• CPC Class Codes: G06K 19/07767 the first and second communication means being two different antennas types, e.g. dipole and coil type, or two antennas of the same kind but operating at different frequencies
• CPC Class Codes: G06K 19/07792 the antenna adapted for extending in three dimensions
• 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: 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 13/2462 Asset location systems combined with EAS inventory, tracking, logistic G06Q10/00; entrance control systems G07C9/00
• CPC Class Codes: H01Q 1/20 Resilient mountings
• 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 19/00 Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic combination of horns with slotted waveguide array H01Q13/0233
• CPC Class Codes: H01Q 7/00 Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop

Abstract

An RFID tag assembly and system including a first substrate, at least one passive loop disposed on the substrate, the passive loop being adapted to receive and transmit at least one RFID signal, and at least one RFID tag member, the tag member including a second substrate having first and second surfaces and at least one RFID tag disposed on the second substrate first surface, the second substrate second surface being removably secured to one of the first substrate surfaces proximate the passive loop, the RFID tag being coupled to the passive loop.

Claims

1. A RFID tag assembly, comprising;

a first substrate having first and second surfaces;

at least one passive loop disposed on at least one of said first substrate surfaces, said passive loop being adapted to receive and transmit at least one RFID signal; and

at least one RFID tag member, said tag member including a second substrate having first and second surfaces and at least one RFID tag disposed on said second substrate first surface, said second substrate second surface being removably secured to one of said first substrate surfaces proximate said passive loop, said RFID tag having a first operating frequency, said RFID tag being magnetically coupled to said passive loop.

2. The RFID tag assembly of claim 1, wherein said passive loop is embedded in said first substrate.

3. The RFID tag assembly of claim 1, wherein said second substrate second surface includes first adhesive means for attaching said tag member to an article.

4. The RFID tag assembly of claim 1, wherein said passive loop has an inductance and a fixed capacitance that is substantially equal to said first operating frequency.

5. The RFID tag assembly of claim 1, wherein at least one of said first substrate surfaces includes second adhesive means for attaching said first substrate to an article.

6. A RFID tag assembly for a shipping container having a plurality of surfaces and at least one passive loop disposed on at least one of the container surfaces, said passive loop being adapted to receive and transmit at least one RFID signal, comprising;

a first substrate having first and second surfaces; and

at least one RFID tag member, said tag member including a second substrate having first and second surfaces and at least one RFID tag disposed on said second substrate first surface, said second substrate second surface being removably secured to one of said first substrate surfaces, said RFID tag having a first operating frequency,

said first substrate and said RFID tag member being disposed on at least one of said container surfaces proximate said passive loop, said RFID tag being magnetically coupled to said passive loop.

7. The RFID tag assembly of claim 6, wherein said second substrate second surface includes adhesive means for attaching said tag member to an article.

8. A RFID tag assembly for a shipping container having a plurality of surfaces and at least one RFID tag disposed on or embedded in one the container surfaces, comprising;

a first substrate having first and second surfaces; and

at least a first passive loop disposed on at least one of said substrate surfaces, said passive loop being adapted to receive and transmit at least one RFID signal,

said substrate and said passive loop being disposed on at least one of said container surfaces proximate said RFID tag, said passive loop being magnetically coupled to said RFID tag.

9. The RFID tag assembly of claim 8, wherein said tag assembly includes at least a second passive loop disposed on at least one of said container surfaces, said second passive loop being in communication with said first passive loop.