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Tunable Tapped Combline Bandpass Filters for RFID Systems
Purdue University, Department of Electronics & Computer Engineering, USA.
Purdue University, Department of Electronics & Computer Engineering, USA.
Purdue University, Department of Electronics & Computer Engineering, USA.
University of Gävle, Faculty of Engineering and Sustainable Development, Department of Electronics, Mathematics and Natural Sciences, Electronics. Purdue University, Department of Electronics & Computer Engineering, USA.
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2017 (English)In: 2017 IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications (APWC), IEEE , 2017, p. 240-243Conference paper, Published paper (Refereed)
Abstract [en]

Design, simulation and measurement results of a tunable planar bandpass filter with a tapped combline topology using diodes as active devices for varactor effect is given. Tunable planar bandpass filter that can operate from 900MHz to 1.6GHz with an enhanced attenuation characteristics are obtained. Diodes are used with an applied bias voltage to have capacitance variation from 0.84 [pF] to 5.08 [pF]. The proposed method eliminates the need for using different active devices and bias voltages and simplifies the geometry that eases implementation. The simulation and measurement results are compared and found in agreement. The method presented in this paper can be integrated in RFID systems to improve the common leakage problem in TX-RX due to poor isolation in circulators.

Place, publisher, year, edition, pages
IEEE , 2017. p. 240-243
Keywords [en]
Tapped combline; bandpass; filter; RFID; varactor
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:hig:diva-26398DOI: 10.1109/APWC.2017.8062291ISI: 000426876900070Scopus ID: 2-s2.0-85046956317ISBN: 978-1-5090-4455-9 (print)ISBN: 978-1-5090-4454-2 (electronic)ISBN: 978-1-5090-4453-5 OAI: oai:DiVA.org:hig-26398DiVA, id: diva2:1194754
Conference
The 2017 IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications (APWC), 11-15 September 2017, Verona, Italy
Available from: 2018-04-03 Created: 2018-04-03 Last updated: 2018-06-05Bibliographically approved

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Rönnow, Daniel

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CiteExportLink to record
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Citation style
  • apa
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  • ieee
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  • Other style
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