A novel method for determining the resonance frequency of PICCs

Author

Lin, Wei ; Geck, Bernd ; Eul, Hermann ; Lanschuetzer, Christian ; Raggam, Peter

Author_Institution

Inst. of Radiofreq. & Microwave Eng. (HFT), Leibniz Univ. of Hanover, Hanover

fYear

2008

fDate

25-25 July 2008

Firstpage

311

Lastpage

315

Abstract

The resonance frequency is a very important parameter for the characterization of PICCs. In this paper a new method for measuring the resonance frequency is presented. In spite of the widely used Real{Z} method the new transfer function method assures a well defined constant working state of the PICC during the measurement. Additionally only scalar measurements have to be performed. First the problems of the Real{Z} method are analyzed and then theory and advantages of the new method are presented by analytical calculations and simulations. Then a practical realization of the transfer function method is presented and the quality of the method is proved by measuring the resonance frequencies of passive reference devices and standard PICCs.

Keywords

analogue integrated circuits; circuit resonance; frequency measurement; passive networks; radiofrequency identification; smart cards; transfer function matrices; PICC; passive reference devices; proximity integrated circuit card; real{Z} method; resonance frequency; scalar measurements; transfer function method; Coils; Frequency measurement; Impedance measurement; Magnetic field measurement; Magnetic resonance; Power measurement; Radiofrequency identification; Resonant frequency; Size measurement; Transfer functions;

fLanguage

English

Publisher

ieee

Conference_Titel

Communication Systems, Networks and Digital Signal Processing, 2008. CNSDSP 2008. 6th International Symposium on

Conference_Location

Graz

Print_ISBN

978-1-4244-1875-6

Electronic_ISBN

978-1-4244-1876-3

Type

conf

DOI

10.1109/CSNDSP.2008.4610795

Filename

4610795