Abstract
This paper proposes a tuneable band-rejected miniaturised monopole antenna. The band-notching was achieved by printing an inner chorded crescent shape over the surface of the substrate. By placing a small varactor between the inner and outer arches, the centre frequency of each notch can be individually shifted downwards. The design of the proposed structure has a controllable rejection in the range from 2.38 to 3.87 GHz maintaining a wideband performance from 1.5 to 5 GHz based on VSWR ≤ 2. The antenna prototype was fabricated and tested. Simulated and measured results are performed and analysed. With a compact size, the proposed monopole antenna may well work as an internal antenna in a portable device.
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Acknowledgments
This work is carried out under the BENEFIC project (CA505), a project labelled within the framework of CATRENE, the EUREKA cluster for Application and Technology Research in Europe on NanoElectronics, co-financed by the European Funds for Regional Development (FEDER) by COMPETE – Programa Operacional do Centro (PO Centro) of QREN [Project number 38887 – BENEFIC. Also, this work is supported by the VALUE project (PEst-OE/EEI/LA0008/2013 and, through its first author, by the grant of the Fundacão para a Ciência e a Tecnologia (FCT - Portugal), with the reference number: SFRH/BPD/95110/2013.
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Elfergani, I.T.E., Hussaini, A.S., See, C.H., Rodriguez, J., Abd-Alhameed, R., Marques, P. (2015). A Miniaturised Monopole Wideband Antenna with Reconfigurable Band Rejection for WLAN/WiMAX. In: Mumtaz, S., Rodriguez, J., Katz, M., Wang, C., Nascimento, A. (eds) Wireless Internet. WICON 2014. Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering, vol 146. Springer, Cham. https://doi.org/10.1007/978-3-319-18802-7_40
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DOI: https://doi.org/10.1007/978-3-319-18802-7_40
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