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Compact ultra-wideband monopole antenna loaded with metamaterial

Al-Bawri, Samir Salem and Goh, Hui Hwang and Islam, Md Shabiul and Wong, Hin Yong and Jamlos, M. F. and Narbudowicz, Adam and Muzammil, Jusoh and Thennarasan, Sabapathy and Rizwan, Khan and Islam, Mohammad Tariqul (2020) Compact ultra-wideband monopole antenna loaded with metamaterial. Sensors, 20 (3). pp. 1-15. ISSN 1424-8220

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A printed compact monopole antenna based on a single negative (SNG) metamaterial is proposed for ultra-wideband (UWB) applications. A low-profile, key-shaped structure forms the radiating monopole and is loaded with metamaterial unit cells with negative permittivity and more than 1.5 GHz bandwidth of near-zero refractive index (NZRI) property. The antenna offers a wide bandwidth from 3.08 to 14.1 GHz and an average gain of 4.54 dBi, with a peak gain of 6.12 dBi; this is in contrast to the poor performance when metamaterial is not used. Moreover, the maximum obtained radiation efficiency is 97%. A reasonable agreement between simulation and experiments is realized, demonstrating that the proposed antenna can operate over a wide bandwidth with symmetric split-ring resonator (SSRR) metamaterial structures and compact size of 14.5 × 22 mm2 (0.148 λ0 × 0.226 λ0) with respect to the lowest operating frequency.

Item Type: Article
Additional Information: Indexed by Scopus
Uncontrolled Keywords: Monopole antenna; Ultra-wideband (UWB); Wideband; ENG metamaterial; Near-zero refractive index (NZRI)
Subjects: T Technology > TJ Mechanical engineering and machinery
T Technology > TK Electrical engineering. Electronics Nuclear engineering
Faculty/Division: Faculty of Mechanical Engineering
Depositing User: Mrs Norsaini Abdul Samat
Date Deposited: 30 Jun 2021 14:26
Last Modified: 30 Jun 2021 14:26
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