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https://doi.org/10.21256/zhaw-3333| Publikationstyp: | Konferenz: Paper |
| Art der Begutachtung: | Peer review (Abstract) |
| Titel: | Adaptive carrier supression for UHF RFID using digitally tunable capacitors |
| Autor/-in: | Küng, Roland Koller, Marcel |
| DOI: | 10.21256/zhaw-3333 |
| Tagungsband: | Proceedings of the 43rd European Microwave Conference |
| Angaben zur Konferenz: | 2013 European Microwave Conference, Nuremberg, Germany, 6-10 October 2013 |
| Erscheinungsdatum: | 2013 |
| Verlag / Hrsg. Institution: | IEEE |
| ISBN: | 978-2-87487-031-6 |
| Sprache: | Englisch |
| Schlagwörter: | RFID; Reader; UHF; Suppression |
| Fachgebiet (DDC): | 004: Informatik 621.3: Elektro-, Kommunikations-, Steuerungs- und Regelungstechnik |
| Zusammenfassung: | In UHF (Ultra High Frequency) RFID (Radio Frequency Identification) systems Rx (Receiver) is usually isolated from Tx (Transmitter) by a circulator or a directional coupler. Since tags become more sensitive in order to improve reading distance, the relatively poor isolation of 20dB – 30dB limits the tag to reader link. A way to improve a directional coupler’s isolation is to mismatch the unused port to generate a carrier cancelling signal. In this paper an impedance network using digitally tunable capacitors is proposed. The advantage of this solution is that changes in the system – like antenna characteristics or cable length - can be recalibrated at any time by a controller. Finally an isolation of minimum 47dB for any antenna characteristic (minimum return loss of 18dB) and any cable length was reached. Also an algorithm was implemented on a simple MSP430 controller to find the optimum impedance to minimize carrier leakage. |
| URI: | https://ieeexplore.ieee.org/document/6686814 https://digitalcollection.zhaw.ch/handle/11475/16473 |
| Volltext Version: | Akzeptierte Version |
| Lizenz (gemäss Verlagsvertrag): | Lizenz gemäss Verlagsvertrag |
| Departement: | School of Engineering |
| Organisationseinheit: | Institute of Signal Processing and Wireless Communications (ISC) |
| Enthalten in den Sammlungen: | Publikationen School of Engineering |
Dateien zu dieser Ressource:
| Datei | Beschreibung | Größe | Format | |
|---|---|---|---|---|
| adaptive_carrier_suppression_koller_kueng.pdf | 1.03 MB | Adobe PDF |  Öffnen/Anzeigen |
Zur Langanzeige
Küng, R., & Koller, M. (2013). Adaptive carrier supression for UHF RFID using digitally tunable capacitors. Proceedings of the 43rd European Microwave Conference. https://doi.org/10.21256/zhaw-3333
Küng, R. and Koller, M. (2013) ‘Adaptive carrier supression for UHF RFID using digitally tunable capacitors’, in Proceedings of the 43rd European Microwave Conference. IEEE. Available at: https://doi.org/10.21256/zhaw-3333.
R. Küng and M. Koller, “Adaptive carrier supression for UHF RFID using digitally tunable capacitors,” in Proceedings of the 43rd European Microwave Conference, 2013. doi: 10.21256/zhaw-3333.
KÜNG, Roland und Marcel KOLLER, 2013. Adaptive carrier supression for UHF RFID using digitally tunable capacitors. In: Proceedings of the 43rd European Microwave Conference [online]. Conference paper. IEEE. 2013. ISBN 978-2-87487-031-6. Verfügbar unter: https://ieeexplore.ieee.org/document/6686814
Küng, Roland, and Marcel Koller. 2013. “Adaptive Carrier Supression for UHF RFID Using Digitally Tunable Capacitors.” Conference paper. In Proceedings of the 43rd European Microwave Conference. IEEE. https://doi.org/10.21256/zhaw-3333.
Küng, Roland, and Marcel Koller. “Adaptive Carrier Supression for UHF RFID Using Digitally Tunable Capacitors.” Proceedings of the 43rd European Microwave Conference, IEEE, 2013, https://doi.org/10.21256/zhaw-3333.
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