Layered structure for a transponder tag

• US 5,654,693 A
• Filed: 04/10/1996
• Issued: 08/05/1997
• Est. Priority Date: 04/10/1996
• Status: Expired due to Fees

• Current Assignee: X-Cyte Inc.
• Original Assignee: X-Cyte Inc.
• Inventors: Cocita, Keith
• Primary Examiner(s): Hofsass, Jeffery
• Assistant Examiner(s): Lee, Benjamin C.
• Application Number:
  US08/636,903
• Time in Patent Office: 482 Days
• Field of Search: 340/572, 340/581, 343/794, 343/795, 343/802, 343/818, 343/820, 235/380, 342/51, 342/44, 342/42, 310/313 R, 310/313 B
• US Class Current: 340/572.1
• CPC Class Codes: G06K 19/067 Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
• 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

Abstract

A transponder antenna is carried by a substrate and is sandwiched between the substrate and a cover sheet. A rectangular opening extends through the cover sheet and receives a signal processing chip adhesively carried in a recess below a cap which covers the opening. The chip is spaced with respect to the antenna so as to facilitate inductive coupling between the chip and antenna.

Claims

1. A transponder tag, comprising in combination:

(a) substrate means for carrying transponder components and being formed to a predetermined size and configuration and with at least a first surface;

(b) transponder antenna means, having an antenna opening thereon, for receiving and transmitting signals and disposed on said first surface of said substrate means;

(c) cover means arranged over said first surface and covering said antenna means and having at least one opening extending therethrough in substantially axial alignment with said antenna opening;

(d) cap means having a ridge thereon for covering said cover opening; and

(e) signal processing chip means carried under said cap means and arranged in said cover opening so as to be inductively coupled to said antenna means through said antenna opening.

2. The transponder tag of claim 1, wherein said opening through said cover means is substantially rectangular shaped.

3. The transponder tag of claim 1, wherein said opening through said cover means is substantially centrally disposed in said cover means.

4. The transponder tag of claim 1, wherein said opening through said cover means is disposed proximate an edge of said cover means.

5. The transponder tag of claim 1, wherein said chip means is carried by said cap means so as to be spaced from said antenna means but still inductively coupled to said antenna means.

6. The transponder tag of claim 5, wherein said cap means is formed with a recess and said chip means is lodged in said recess.

7. The transponder tag of claim 6, wherein said chip means is of greater thickness said cover means.

8. A transponder tag, comprising:

(a) a substrate formed to a predetermined size and configuration and with at least a first surface;

(b) a transponder antenna carried by said first surface of said substrate and having an antenna opening thereon;

(c) a cover of a size and configuration corresponding to said substrate and including at least an opening extending through said cover in substantially axial alignment with said antenna opening;

(d) a cap having a ridge thereon for covering said cover opening;

(e) a signal processing chip carried under said cap and arranged in said cover opening, so that said chip is being inductively coupled to said antenna through said antenna opening.

9. The transponder tag of claim 8, wherein said chip is of greater thickness than said cap.

10. The transponder tag of claim 8, wherein said opening through said cover is substantially rectangular shaped.

11. The transponder tag of claim 8, wherein said opening through said cover is substantially centrally disposed in said cover.

12. The transponder tag of claim 8, wherein said opening through said cover is disposed proximate an edge of said cover.

13. The transponder tag of claim 8, wherein said chip is carried by said cap so as to be spaced from said antenna but still inductively coupled to said antenna.

14. The transponder tag of claim 13, wherein said cap is formed with a recess and said chip is lodged in said recess.