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A wideband and directive metasurface FPC antenna with toroidal metal structure loading

Published online by Cambridge University Press:  06 October 2021

Parul Dawar  and
Mahmoud A. Abdalla Open the ORCID record for Mahmoud A. Abdalla [Opens in a new window]
Parul Dawar
Affiliation:
Electronics and Communication Engineering Department, Guru Tegh Bahadur Institute of Technology, Delhi, India
Mahmoud A. Abdalla*
Affiliation:
Electromagnetic Waves Group, Department of Electronic Engineering, Military Technical College, Cairo, Egypt
*
Author for correspondence: Mahmoud A. Abdalla, E-mail: maaabdalla@ieee.org
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Abstract

In this paper, a novel metasurface-based Fabry−Perot cavity antenna loaded with toroidal metal structures is presented. The antenna is compact, wideband, and has high directivity and a high front-to-back ratio. The idea of the antenna is based on loading a microstrip narrow band patch antenna resonating at 4.5 GHz by a single layer metasurface superstrate and with a toroidal metal structure. The metasurface superstrate comprises a periodic array of square patch cells. Compared to conventional microstrip antenna, the front to back lobe ratio is increased from 7 to 20 dB and the directivity is increased by 7 dB. Also, the antenna impedance bandwidth is 34% which is increased four times. This is the first-ever antenna with enhanced bandwidth and directivity using a single layer of metasurface and that too made up of periodic cell array and has application as an energy harvester.

Keywords

Front to back ratiohigh directivitymetasurfacewideband
Type
Metamaterials and Photonic Bandgap Structures
Information
International Journal of Microwave and Wireless Technologies , Volume 14 , Issue 8 , October 2022 , pp. 1069 - 1080
Copyright
Copyright © The Author(s), 2021. Published by Cambridge University Press in association with the European Microwave Association

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