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    Slotted Printed Monopole UWB Antennas with Tuneable Rejection Bands for WLAN/WiMAX and X-Band Coexistence

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    Publication date
    2018-03-15
    Author
    Elfergani, Issa T.
    Rodriguez, Jonathan
    Otung, I.
    Mshwat, W.
    Abd-Alhameed, Raed A.
    Keyword
    Monopole printed antenna; UWB (Ultra-wideband); Notched bands; Varactor
    Rights
    © 2018 The Authors. Published by Radioengineering, licensed under a Creative Commons Attribution 4.0 License https://creativecommons.org/licenses/by/4.0
    Peer-Reviewed
    Yes
    
    Metadata
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    Abstract
    Four versions of the compact hexagonal-shaped monopole printed antennas for UWB applications are presented. The first proposed antenna has an impedance bandwidth of 127.48 % (3.1 GHz to 14 GHz), which satisfies the bandwidth for ultra-wideband communication systems. To reduce the foreseen co-channel interference with WLAN (5.2GHz) and X-Band systems (10GHz), the second and third antennas type were generated by embedding hexagonal slot on the top of the radiating patch. The integration of the half and full hexagonal slots created notched bands that potentially filtered out the sources of interference, but were static in nature. Therefore, a fourth antenna type with tuneable-notched bands was designed by adding a varactor diode at an appropriate location within the slot. The fourth antenna type is a dual-notch that was electronically and simultaneously tuned from 3.2GHz to 5.1GHz and from 7.25GHz up to 9.9GHz by varying the bias voltages across the varactor. The prototypes of the four antenna versions were successfully fabricated and tested. The measured results have good agreement with the simulated results.
    URI
    http://hdl.handle.net/10454/15345
    Version
    Accepted Manuscript
    Citation
    Elfergani IT, Rodriguez J, Otung I, Mshwat W and Abd-Alhameed RA (2018) Slotted Printed Monopole UWB Antennas with Tunable Rejection Bands for WLAN/WiMAX and X-Band Coexistence. Radioengineering. 27(3): 694-702.
    Link to publisher’s version
    https://doi.org/10.13164/re.2018.0694
    Type
    Article
    Collections
    Engineering and Informatics Publications

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