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Hybrid antenna design for an optically powered SHF RFID transponder applicable in metals

Published online by Cambridge University Press:  04 June 2013

Johannes Meyer ,
Stefan Franke ,
Bernd Geck  and
Ludger Overmeyer
Johannes Meyer*
Affiliation:
Institut für Hochfrequenztechnik und Funksysteme, Leibniz Universität Hannover, Appelstraße 9a, 30167 Hannover, Germany. Phone: +49-511-762-5264
Stefan Franke
Affiliation:
Institut für Transport- und Automatisierungstechnik, Leibniz Universität Hannover, An der Universität 2, 30823 Garbsen, Germany
Bernd Geck
Affiliation:
Institut für Hochfrequenztechnik und Funksysteme, Leibniz Universität Hannover, Appelstraße 9a, 30167 Hannover, Germany. Phone: +49-511-762-5264
Ludger Overmeyer
Affiliation:
Institut für Transport- und Automatisierungstechnik, Leibniz Universität Hannover, An der Universität 2, 30823 Garbsen, Germany
*
Corresponding author: Johannes Meyer Email: meyer@hft.uni-hannover.de
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Abstract

This paper presents a hybrid antenna design for an optically powered super high frequency (SHF) radio frequency identification transponder applicable for the integration into metal. The key feature of the antenna is its ability to receive microwave signals at SHF for data communication and optical signals for the power supply of the transponder. The antenna design is based on a circular waveguide which is filled with a bundle of polymer optical fibers to guide light to the photodiodes. In addition, a transition is placed within the circular waveguide to transfer the waveguide mode of the SHF signal into a microstrip mode which is a more suitable structure for the integration of electronic transponder components. This paper discusses the constraints and solutions for the aforementioned combination of SHF microwave and light. The figures of merit of the optical power supply are presented, including considerations of the light distribution and the obtained power as a function of the incident angle and the used polymer optical fiber diameter. Furthermore, the measured gain and return loss of the SHF antenna structure is compared to the simulated results.

Keywords

Antenna DesignModeling and measurementsRFID and sensors
Type
Research Papers
Information
International Journal of Microwave and Wireless Technologies , Volume 5 , Special Issue 3: European Microwave Week 2012 , June 2013 , pp. 241 - 247
Copyright
Copyright © Cambridge University Press and the European Microwave Association 2013 

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References

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