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Small UWB antenna with two stop bands by a compact EBG cell loaded with new open meander slots

Published online by Cambridge University Press:  23 August 2021

Farzad Alizadeh Open the ORCID record for Farzad Alizadeh [Opens in a new window] ,
Changiz Ghobadi  and
Javad Nourinia Open the ORCID record for Javad Nourinia [Opens in a new window]
Farzad Alizadeh
Affiliation:
Department of Electrical Engineering, Urmia University, Urmia, Iran
Changiz Ghobadi
Affiliation:
Department of Electrical Engineering, Urmia University, Urmia, Iran
Javad Nourinia*
Affiliation:
Department of Electrical Engineering, Urmia University, Urmia, Iran
*
Author for correspondence: Javad Nourinia, E-mail: [email protected]
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Abstract

In this paper, a small ultra-wideband (UWB) antenna with two stop bands by a compact electromagnetic bandgap (EBG) cell loaded with two new open meander slots is presented. With the coupling of the EBG cell to the feedline, the stop bands are formed. The designed EBG cell is a mushroom type that has the advantages of being able to independently control the stop bands, high responsiveness selectivity of stop bands, easy switching, the need for fewer EBG cells, and low impact on the working characteristics of the antenna. To have a better understanding of the proposed EBG mechanism, characteristic mode analysis is used. The size reduction of the suggested antenna is obtained by halving the reference antenna relative to the axis of symmetry. The measurement results for −10 dB adaptation are from 2.73 to 13 GHz with stop bands at 3.51 GHz (12.9%) and 5.34 GHz (14.1%). The radiation behavior of the minimized antenna is similar to that of a reference antenna. Minimized UWB antenna with transmission function and group delay with small variations in the operating frequency range is suitable for small multiple-input and multiple-output (MIMO) and diversity systems.

Keywords

Ultra-wideband antennaminiaturizationelectromagnetic bandgap (EBG)dual-band removalcharacteristic mode analysis
Type
Metamaterials and Photonic Bandgap Structures
Information
International Journal of Microwave and Wireless Technologies , Volume 14 , Issue 5 , June 2022 , pp. 580 - 589
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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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