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Content Provider | IEEE Xplore Digital Library |
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Author | Wielandt, S. Mercy, D. Stevens, N. De Strycker, L. Goemaere, J.-P. |
Copyright Year | 2012 |
Description | Author affiliation: KAHO Sint-Lieven, Engineering Technology, Electronics, Association KU Leuven, Gebroeders De Smetstraat 1, 9000 Ghent, Belgium (Wielandt, S.; Mercy, D.; Stevens, N.; De Strycker, L.; Goemaere, J.-P.) |
Abstract | When RFID reader antennas are placed in a parallel line configuration, proper shielding is indispensable to prevent the readout of tags in a different line. However, placing electrically conductive or magnetically permeable shielding materials in the vicinity of a loop antenna influences the magnetic field strength and self inductance of the antenna, thus affecting the readout range. This paper evaluates the effects of different shieldings on the magnetic field strength, the readout range of an RFID tag and the self inductance of the antenna. The considered shieldings consist of copper or a combination of copper with a layer of highly or lowly permeable ferrite on top. First, the influences of these materials are compared to a free space setup in FEM simulations. These results are subsequently verified in an experimental setup. The configuration with a copper plate covered with a highly permeable ferrite layer increases the magnetic field strength, readout range and self inductance of the antenna, in contrast to the other configurations. Due to the efficient shielding, erroneous readout events of tags in a parallel line are suppressed. |
Starting Page | 1 |
Ending Page | 5 |
File Size | 831153 |
Page Count | 5 |
File Format | |
ISBN | 9781467307185 |
ISSN | 23250364 |
e-ISBN | 9781467307178 |
DOI | 10.1109/EMCEurope.2012.6396817 |
Language | English |
Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
Publisher Date | 2012-09-17 |
Publisher Place | Italy |
Access Restriction | Subscribed |
Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
Subject Keyword | Ferrites Inductance Electromagnetic induction Directional antennas Magnetic noise Copper Antennas Magnetic shielding Radiofrequency identification Radio frequency identification |
Content Type | Text |
Resource Type | Article |
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