Effective Parameters for Ferrite-Core RID Tag Antennas

In this paper we obtain the effective geometrical parameters of a ferrite-core based antenna to model its equivalent electrical circuit for computing the self-inductance, power losses, including the hysteresis effects. The ferrite coil is the receiver antenna of a low frequency RID tag (134.2 kHz)....

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Bibliographic Details
Published in2018 IEEE 61st International Midwest Symposium on Circuits and Systems (MWSCAS) pp. 1020 - 1023
Main Authors Santana-Abril, J., Elejalde, Y., Monzon-Verona, J. M., Sosa, J., Montiel-Nelson, Juan A.
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.08.2018
Subjects
Antena Tag
Antenna measurements
Antennas
Computational modeling
Current measurement
Effective parameters
FEM analysis
ferrite core-based coil
Ferrites
finite-element methods
Hysteresys Losses
Inductance
LF RFID
Magnetic hysteresis
S11 parameter
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Summary:In this paper we obtain the effective geometrical parameters of a ferrite-core based antenna to model its equivalent electrical circuit for computing the self-inductance, power losses, including the hysteresis effects. The ferrite coil is the receiver antenna of a low frequency RID tag (134.2 kHz). Non-linear effects are modeled by adjusting the hysteresis angle and effective radius of the ferrite core-based coil. In addition, we modeled the coupled equivalent circuit of the RFID system and computed the mutual inductance at different Z-axis values. Numerical analysis using FEM in 2D is used. These models have been validated with experimental measurements ofS11 scattering parameter and induced current, respectively.
ISSN:1558-3899
DOI:10.1109/MWSCAS.2018.8623854