Method for Providing Inductively Coupled Radio Frequency Identification (RFID) Transponder, and RFID Transponder

• US 20120061475A1
• Filed: 08/24/2011
• Published: 03/15/2012
• Est. Priority Date: 08/24/2010
• Status: Abandoned Application

• Current Assignee: Siemens AG
• Original Assignee: Siemens AG
• Inventors: KUBE, Roland, Bernd, Stadelmann
• Application Number:
  US13/217,044
• Publication Number:
  US 20120061475A1
• Time in Patent Office: Days
• US Class Current: 235/492
• 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 19/07771 the record carrier comprising means for minimising adverse effects on the data communication capability of the record carrier, e.g. minimising Eddy currents induced in a proximate metal or otherwise electromagnetically interfering object
• CPC Class Codes: H05K 1/0373 containing additives, e.g. fillers H05K1/036 takes precedence
• CPC Class Codes: H05K 2201/0129 Thermoplastic polymer, e.g. auto-adhesive layer; Shaping of thermoplastic polymer
• CPC Class Codes: H05K 2201/083 Magnetic materials
• CPC Class Codes: H05K 2201/09118 Moulded substrate
• CPC Class Codes: H05K 2203/107 Using laser light shaping a substrate by laser ablation H05K3/0026
• CPC Class Codes: H05K 3/0014 Shaping of the substrate, e.g. by moulding
• CPC Class Codes: H05K 3/105 by conversion of non-conductive material on or in the support into conductive material, e.g. by using an energy beam
• CPC Class Codes: Y10T 29/49016 Antenna or wave energy "plumbing" making

Abstract

A radio frequency identification (RFID) transponder for use in an RFID arrangement with inductive coupling, where interaction of a transmitting and receiving coil with a ferrite component is provided for guiding the magnetic flux. Here, the ferrite component for guiding the magnetic flux includes a composite material comprising a plastic and ferrite powder, where the plastic is furnished in a laser-patternable manner, such that the transmitting and receiving coil is formed by at least one conductor track and then precontoured by laser processing metalized in or on a surface of the component. Such an RFID transponder is robust, easy and simple to produce.

Claims

1. A radio frequency identification (RFID) transponder for an RFID arrangement having inductive coupling, comprising:

a transmitting and receiving coil; and

a ferrite component for guiding a magnetic flux, the ferrite component for guiding the magnetic flux interacting with the transmitting and receiving coil and comprising a composite material comprised of a plastic and ferrite powder, and the plastic being furnished in a laser-patternable manner;

wherein the transmitting and receiving coil is formed by at least one conductor track metalized and precontoured by laser processing in or on a surface of the component.

2. The RFID transponder as claimed in patent claim 1, wherein the plastic is a liquid crystal polymer.

3. The RFID transponder as claimed in patent claim 1, wherein the ferrite component comprises conductor tracks of operating electronics that have been metalized and precontoured by laser processing;

and wherein electronic components of the operating electronics are fitted on the ferrite component.

4. The RFID transponder as claimed in patent claim 2, wherein the ferrite component comprises conductor tracks of operating electronics that have been metalized and precontoured by laser processing;

and wherein electronic components of the operating electronics are fitted on the ferrite component.

6. The method as claimed in patent claim 4, wherein the plastic comprises a liquid crystal polymer.

8. The method as claimed in patent claim 6, further comprising

provided the ferrite component by laser processing with pre-contoured and metalized conductor tracks of the operating electronics;

and

fitting the electronic components of the operating electronics on the ferrite component after providing the pre-contoured and metalized conductor tracks of the operating electronics.

5. A method for producing an inductively coupleable radio frequency identifier (RFID) transponder, comprising:

connecting operating electronics to a transmitting and receiving coil;

providing a ferrite component for guiding a magnetic flux through the transmitting and receiving coil;

shaping the ferrite component from a composite material comprising a plastic and ferrite powder, the plastic being furnished in a laser-activateable manner;

applying or introducing, with a laser beam, a contour of a conductor track to configure the transmitting and receiving coil in or on a surface of the ferrite component; and

metalizing and contact-connecting the contour of the conductor track to the operating electronics.

7. The method as claimed in patent claim 5, further comprising

providing the ferrite component by laser processing with pre-contoured and metalized conductor tracks of the operating electronics;

and

fitting the electronic components of the operating electronics on the ferrite component after providing the pre-contoured and metalized conductor tracks of the operating electronics.