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Modified EAS Tag Used as a Resistive Sensor Platform
Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Technology and Media.
Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Technology and Media.ORCID iD: 0000-0003-1967-4016
Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Technology and Media.
Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Technology and Media.
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2012 (English)In: MDPI Electronics, ISSN 2079-9292, Vol. 1, no 2, p. 32-46Article in journal (Refereed) Published
Abstract [en]

In this article, a modified design of an RF Radio Frequency Electronic ArticleSurveillance (EAS) tag, used as a sensor platform, is manufactured and characterized. EAStags are passive devices consisting of a capacitor and coil, tuned to a resonance frequencyreadable by the detector equipment, in this case 8.2 MHz. They were originally used todetect whether merchandise was being moved through the detection gates at shop exits, inwhich case an alarm was triggered. If the capacitance is divided in two and a resistivesensor device inserted in between, the resonant Inductor-Capacitor (LC) circuit becomes anInductor-Capacitor-Capacitor-Resistor LCCR circuit and can be used as a sensor tag. Ahigh sensor resistance means that one capacitor is decoupled, leading to one resonancefrequency, while a low resistance will couple both capacitances into the circuit, resulting ina lower resonance frequency. Different types of resistive sensors exist that are able todetect properties such as pressure, moisture, light and temperature. The tag is manufacturedin Aluminum foil on a polyetylentereftalat (PET) substrate, resulting in a cost effectiveRF-platform for various resistive sensors. Two types of tags are designed andmanufactured, one with parallel plate capacitors and the other with interdigital capacitors.To test the tags, a resistive tilt sensor is mounted and the tags are characterized using anetwork analyzer. It is shown that for high resistance, the tags have a resonance frequencyof more than 10 MHz while for low values the frequency approaches 8.2 MHz.

Place, publisher, year, edition, pages
2012. Vol. 1, no 2, p. 32-46
Keyword [en]
EAS tag, sensor
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:miun:diva-17444DOI: 10.3390/electronics1020032Scopus ID: 2-s2.0-84930001475Local ID: STCOAI: oai:DiVA.org:miun-17444DiVA, id: diva2:572234
Available from: 2012-11-27 Created: 2012-11-27 Last updated: 2016-10-20Bibliographically approved

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Andersson, HenrikHammarling, KristerSidén, JohanManuilskiy, AnatoliyÖhlund, ThomasNilsson, Hans-Erik
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Department of Information Technology and MediaDepartment of applied science and design
Electrical Engineering, Electronic Engineering, Information Engineering

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