Identification-data media

• US 7,453,360 B2
• Filed: 07/15/2005
• Issued: 11/18/2008
• Est. Priority Date: 07/19/2004
• Status: Active Grant

• Current Assignee: Infineon Technologies AG
• Original Assignee: Infineon Technologies AG
• Inventors: Glaser, Rupert
• Primary Examiner(s): PHAM, TOAN NGOC
• Application Number:
  US11/182,657
• Publication Number:
  US 20060027666A1
• Time in Patent Office: 1,222 Days
• Field of Search: 3405721-5728, 343/850, 343/857, 235/492, 235/451, 235/435, 235/439, 361/734, 361/738, 361/760, 361/763
• US Class Current: 340/572.1
• 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: G08B 13/2417 having a radio frequency identification chip

Abstract

An identification carrier is disclosed. In one embodiment, the identification data carrier, includes a carrier substrate, having an electronic chip fitted on and/or in the carrier substrate, and having a transmitting/receiving antenna formed on and/or in the carrier substrate and serving for transmitting and for receiving electromagnetic radiation, and having a first capacitance, the chip being capacitively coupled to the transmitting/receiving antenna by means of the first capacitance.

Claims

1. An identification data carrier comprising:

a carrier substrate;

at least one capacitor at the carrier substrate;

an antenna positioned at the carrier substrate; and

a chip capacitively coupled to the antenna with the at least one capacitor for transmitting and receiving identification signals between the chip and the antenna,

wherein the carrier substrate has a major or surface, and the antenna the at least one capacitor, and the chip are formed at the major surface.

2. The identification data carrier of claim 1, comprising:

wherein the signals are electromagnetic radiation signals.

3. The identification data carrier of claim 1, comprising wherein the carrier substrate is made of plastic.

4. The identification data carrier of claim 1, comprising wherein the carrier substrate is made of polyethylene terephthalate.

5. The identification data carrier of claim 1, comprising wherein the identification data carrier is configured as a radio frequency identification tag.

6. An identification data carrier, comprising:

a carrier substrate having a main surface;

an electronic chip fitted on the carrier substrate;

a transmitting/receiving antenna formed on the carrier substrate and configured for transmitting and receiving electromagnetic radiation; and

a first capacitance, the chip being capacitively coupled to the transmitting/receiving antenna via the first capacitance,

wherein the electronic chip, the transmitting/receiving antenna, and the first capacitance are formed on the mark surface of the carrier substrate.

7. The identification data carrier of claim 6, comprising:

wherein the first capacitance has a first electrically conductive structure and a second electrically conductive structure arranged at a distance from the first electrically conductive structure, the first electrically conductive structure being coupled to a first chip connection of the chip, the second electrically conductive structure being coupled to a first antenna connection of the transmitting/receiving antenna, and a second chip connection of the chip being coupled to a second antenna connection of the transmitting/receiving antenna.

8. The identification data carrier of claim 7, comprising wherein the at least one of the electrically conductive structures is formed as an interrupted ring structure.

9. The identification data carrier of claim 8, comprising wherein the ring structure has a rectangular shape.

10. The identification data carrier of claim 6, comprising wherein the transmitting/receiving antenna is formed as a planar spiral structure.

11. The identification data carrier of claim 6, comprising wherein the carrier substrate is a plastic film.

12. The identification data carrier of claim 6, comprising wherein the carrier substrate is free of a passage hole.

13. The identification data carrier of claim 6, wherein the electronic chip is a silicon chip.

14. The identification data carrier of claim 6, configured as an RFID tag.

15. The identification data carrier of claim 6, comprising wherein different components of the first capacitance are spaced apart on the main surface of the carrier substrate, and wherein the carrier substrate has a smaller thickness in a region in which the components are formed than in other regions of the carrier substrate.

16. An identification data carrier comprising:

a carrier substrate;

a capacitive coupling including at least two capacitors;

an antenna positioned at the carrier substrate;

a chip coupled with the capacitive coupling to the antenna for transmitting and receiving identification signals between the chip and the antenna;

wherein the electronic chip, the transmitting/receiving antenna and the capacitive coupling are formed on a first main surface of the carrier substrate.

17. The identification data carrier of claim 16, comprising wherein the first capacitance has a first electrically conductive structure formed on the main surface and a second electrically conductive structure arranged on the main surface at a distance from the first electrically conductive structure, the second capacitance has a third electrically conductive structure formed on the main surface and a fourth electrically conductive structure arranged on the main surface at a distance from the third electrically conductive structure, the first electrically conductive structure being coupled to a first chip connection of the chip, the third electrically conductive structure being coupled to a second chip connection of the chip, the second electrically conductive structure being coupled to a first antenna connection of the transmitting/receiving antenna, and the fourth electrically conductive structure being coupled to a second antenna connection of the transmitting/receiving antenna.

18. An identification data carrier comprising:

means for providing a carrier substrate;

means for providing an antenna, positioned at the means for providing a carrier substrate;

a chip; and

means for capacitively transmitting identification signals between the chip and the antenna,

wherein the chip, the means for capacitively transmitting, and the means for providing an antenna are formed on a main surface of the carrier substrate.

19. A radio frequency identification tag comprising:

a carrier substrate made of plastic;

an electronic identification chip; and

an antenna positioned at the carrier substrate, capacitively coupled to the electronic identification chip and configured to transmit identification signals between the electronic identification chip and a reader,

wherein the electronic identification chip and the antenna are formed on the main surface of the carrier substrate, and the electronic identification chip is capacitively coupled to the antenna on the main surface of the carrier substrate.