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Article: Frequency-Tunable Monopole Antenna for Wimax Applications

TitleFrequency-Tunable Monopole Antenna for Wimax Applications
Authors
Issue Date2013
PublisherJohn Wiley & Sons, Inc. The Journal's web site is located at http://www3.interscience.wiley.com/cgi-bin/jhome/37176
Citation
Microwave & Optical Technology Letters, 2013, v. 55 n. 8, p. 1902-1907 How to Cite?
AbstractThis article presents a planar dual-band monopole antenna with a frequency-tunable band for use in wireless devices of the 2.4 and 3.4 GHz worldwide interoperability for microwave access (WiMAX) system. The antenna has two radiating branches acting as monopoles and resonating at around 2.4 GHz (lower band) and 3.4 GHz (higher band). A varactor is placed on the radiating branch responsible for the lower band. A very simple DC biasing circuit is designed for reverse-biasing the varactor. By varying the DC-bias voltages from 0 to 12 V for the varactor, the lower band of the antenna can be continuously tuned from 2.3 to 2.83 GHz, covering the frequency bands from 2.3 to 2.4 GHz and 2.5 to 2.7 GHz for the WiMAX system. The antenna has a small overall size of 40 × 35 × 0.8 mm3 with a compact radiator of only 14.5 × 8.2 mm2. The antenna performance in terms of reflection coefficient, radiation pattern, peak gain, and efficiency is studied using computer simulation. For verification of simulation results, the antenna is fabricated and measured. The feeding cable used in measurement causes substantial discrepancies between the simulated and measured simulation results. To study the cable effects, a computer simulation model is included for studies. With the cable model, the simulated and measured results agree very well. Copyright © 2013 Wiley Periodicals, Inc.
Persistent Identifierhttp://hdl.handle.net/10722/191339
ISSN
2015 Impact Factor: 0.545
2015 SCImago Journal Rankings: 0.372
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorSun, Xen_US
dc.contributor.authorCheung, SWen_US
dc.contributor.authorYuk, TTIen_US
dc.date.accessioned2013-10-15T06:55:18Z-
dc.date.available2013-10-15T06:55:18Z-
dc.date.issued2013-
dc.identifier.citationMicrowave & Optical Technology Letters, 2013, v. 55 n. 8, p. 1902-1907en_US
dc.identifier.issn0895-2477-
dc.identifier.urihttp://hdl.handle.net/10722/191339-
dc.description.abstractThis article presents a planar dual-band monopole antenna with a frequency-tunable band for use in wireless devices of the 2.4 and 3.4 GHz worldwide interoperability for microwave access (WiMAX) system. The antenna has two radiating branches acting as monopoles and resonating at around 2.4 GHz (lower band) and 3.4 GHz (higher band). A varactor is placed on the radiating branch responsible for the lower band. A very simple DC biasing circuit is designed for reverse-biasing the varactor. By varying the DC-bias voltages from 0 to 12 V for the varactor, the lower band of the antenna can be continuously tuned from 2.3 to 2.83 GHz, covering the frequency bands from 2.3 to 2.4 GHz and 2.5 to 2.7 GHz for the WiMAX system. The antenna has a small overall size of 40 × 35 × 0.8 mm<sup>3</sup> with a compact radiator of only 14.5 × 8.2 mm<sup>2</sup>. The antenna performance in terms of reflection coefficient, radiation pattern, peak gain, and efficiency is studied using computer simulation. For verification of simulation results, the antenna is fabricated and measured. The feeding cable used in measurement causes substantial discrepancies between the simulated and measured simulation results. To study the cable effects, a computer simulation model is included for studies. With the cable model, the simulated and measured results agree very well. Copyright © 2013 Wiley Periodicals, Inc.-
dc.languageengen_US
dc.publisherJohn Wiley & Sons, Inc. The Journal's web site is located at http://www3.interscience.wiley.com/cgi-bin/jhome/37176-
dc.relation.ispartofMicrowave & Optical Technology Lettersen_US
dc.rightsMicrowave & Optical Technology Letters. Copyright © John Wiley & Sons, Inc.-
dc.titleFrequency-Tunable Monopole Antenna for Wimax Applicationsen_US
dc.typeArticleen_US
dc.identifier.emailCheung, SW: swcheung@eee.hku.hken_US
dc.identifier.emailYuk, TTI: tiyuk@eee.hku.hken_US
dc.identifier.authorityCheung, SW=rp00102en_US
dc.identifier.authorityYuk, TTI=rp00210en_US
dc.identifier.doi10.1002/mop.27685-
dc.identifier.scopuseid_2-s2.0-84878309799-
dc.identifier.hkuros225364en_US
dc.identifier.volume55en_US
dc.identifier.issue8-
dc.identifier.spage1902en_US
dc.identifier.epage1907en_US
dc.identifier.isiWOS:000319522800051-
dc.publisher.placeUnited States-

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