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Miniaturized triple-band monopole antenna loaded with a via-less MTM for 3G, WIMAX, and WLAN applications

Published online by Cambridge University Press:  11 May 2021

Mohammadsadegh Kasmaei ,
Ehsan Zareian-Jahromi ,
Raheleh Basiri  and
Valiollah Mashayekhi Open the ORCID record for Valiollah Mashayekhi [Opens in a new window]
Mohammadsadegh Kasmaei
Affiliation:
Department of Electrical and Electronic Engineering, Shiraz University of Technology, Shiraz, Iran
Ehsan Zareian-Jahromi
Affiliation:
Department of Electrical and Electronic Engineering, Shiraz University of Technology, Shiraz, Iran
Raheleh Basiri
Affiliation:
Department of Electrical and Electronic Engineering, Shiraz University of Technology, Shiraz, Iran
Valiollah Mashayekhi*
Affiliation:
Department of Electrical Engineering, Shahrood University of Technology, Shahrood, Iran
*
Author for correspondence: Valiollah Mashayekhi, E-mail: vmashayekhi@shahroodut.ac.ir
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Abstract

In this paper, a tri-band metamaterial (MTM) loaded compact monopole antenna is proposed. In the first step of design procedure, a rectangular monopole antenna is improved by replacing the corresponding rectangular patch with a ring resonator. As a result, the first obtained operating frequency is decreased from 2.95 to 2.46 GHz. Then, this operating frequency is reduced to 2.02 GHz utilizing an MTM geometry in the antenna structure. The geometry parameters of the proposed antenna are optimized to provide the applicability for 3G, WLAN, and WiMAX applications. The impedance bandwidths of 600, 1080, and 220 MHz are obtained at 2.02–2.62, 3.48–4.56, and 5.12–5.34 GHz, respectively. Moreover, the equivalent circuit of the proposed antenna has been extracted. The proposed equivalent circuit model is validated through a comparison with corresponding simulation results. The proposed antenna is compact, low profile, via-less, and provides easy fabrication. Considering the first resonance frequency, a compactness of 32% is achieved in comparison to the corresponding unloaded monopole antenna.

Keywords

Metamaterial (MTMs)3GWLANWiMAXantenna bandwidth.
Type
Antenna Design, Modeling and Measurements
Information
International Journal of Microwave and Wireless Technologies , Volume 14 , Issue 5 , June 2022 , pp. 601 - 608
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Copyright
Copyright © The Author(s), 2021. Published by Cambridge University Press in association with the European Microwave Association

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