Ultra-Low-Cost RFID Based on Soft Magnetic Ribbons

Author

Huber, Thomas ; Bergmair, Bernhard ; Vogler, Christoph ; Bruckner, Florian ; Breth, Leoni ; Hetaba, Walid ; Hrkac, G. ; Suss, Dieter

Author_Institution

Inst. of Solid State Phys., Vienna Univ. of Technol., Vienna, Austria

Volume

50

Issue

10

fYear

2014

fDate

Oct. 2014

Firstpage

1

Lastpage

5

Abstract

An ultra-low-cost radio-frequency identification tag is presented comprising a soft magnetic ribbon that is biased by an adjacent permanent magnet. The tag is read by measuring changes in the ribbon´s magnetization while applying magnetic ac and dc fields. A harmonic analysis of the response signal allows us to determine both the ribbons´ soft magnetic properties and the strength of the permanent magnet. When manufacturing the tags each of these two parameters can be independently chosen out of a set of well distinguishable values. This constitutes a two-digit identification system. A set of eight different tags was demonstrated to be identifiable.

Keywords

magnetisation; permanent magnets; radiofrequency identification; soft magnetic materials; adjacent permanent magnet; harmonic analysis; magnetic ac field; magnetic dc field; permanent magnet strength; radiofrequency identification tag; response signal; ribbon magnetization; soft magnetic ribbons; two-digit identification system; Amorphous magnetic materials; Coils; Educational institutions; Harmonic analysis; Saturation magnetization; Soft magnetic materials; Identification; passive; radio-frequency identification (RFID); wireless;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2014.2327200

Filename

6822630