University of Oulu

Gatte, MT, Soh, PJ, Kadhim, RA, Abd, HJ, Ahmad, RB. Modeling and performance evaluation of antennas coated using monolayer graphene in the millimeter and sub-millimeter wave bands. Int J Numer Model. 2021; 34:e2929. https://doi.org/10.1002/jnm.2929

Modeling and performance evaluation of antennas coated using monolayer graphene in the millimeter and sub-millimeter wave bands

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Author: Gatte, Mohammed Taih1; Soh, Ping Jack2,3; Kadhim, Rasim Azeez4;
Organizations: 1Depatment of Electrical Engineering, Collage of Engineering, University of Babylon, Hillah, Iraq
2Centre for Wireless Communications (CWC), University of Oulu, P.O. Box 4500, FI-90014 University of Oulu, Finland
3Faculty of Electronic Engineering Technology, Universiti Malaysia Perlis, 02600 Perlis, Malaysia
4Information Security Department, College of Information Technology, University of Babylon, Hillah, Iraq
Format: article
Version: accepted version
Access: embargoed
Persistent link: http://urn.fi/urn:nbn:fi-fe2021081843549
Language: English
Published: John Wiley & Sons, 2021
Publish Date: 2022-06-30
Description:

Abstract

In the applications of millimeter and sub-millimeter wave, the conductivity of metal parts in electronic devices can easily degrade when conventional metals like copper are employed. Furthermore, oxidation may arise when such devices are utilized in severe environmental conditions. To avoid this, conventional conductors such as copper can be coated with other non-active materials to inhibit this problem. Monolayer graphene is used in this study as a coating layers for copper in millimeter-wave antennas. Two types of graphene coatings are investigated: non-doped and doped monolayer graphene. These coatings can either be used as the patch, ground or both conducting layers of a microstrip patch antenna. Results showed that coating using doped graphene improves the performance of antenna in terms of gain, radiated power and radiation efficiency by 11.81%, 8.48%, and 11.48%, respectively, compared to antennas made using copper and coated using gold and non-doped graphene at millimeter-wave frequencies. Meanwhile, at sub-millimeter wave frequencies, the metal (copper and gold)-based antenna showed worse performance compared to millimeter waves. Furthermore, coating of the conducting elements for the sub-millimeter wave antenna using doped and non-doped graphene improved gain, radiated power and radiation efficiency by 33.94%, 32.73%, and 32.01%, respectively, for the coating with doped graphene, and about 14.87%, 16.56%, and 15.72% for the coating with non-doped graphene. This indicates the suitability of graphene-based antennas in both frequency bands and the expected levels of improvements for different parameters when these antenna elements are coated with doped and non-doped graphene.

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Series: International journal of numerical modelling
ISSN: 0894-3370
ISSN-E: 1099-1204
ISSN-L: 0894-3370
Volume: 34
Issue: 5; SI
Article number: e2929
DOI: 10.1002/jnm.2929
OADOI: https://oadoi.org/10.1002/jnm.2929
Type of Publication: A1 Journal article – refereed
Field of Science: 213 Electronic, automation and communications engineering, electronics
Subjects:
Copyright information: © 2021 John Wiley & Sons Ltd. This is the peer reviewed version of the following article: Gatte, MT, Soh, PJ, Kadhim, RA, Abd, HJ, Ahmad, RB. Modeling and performance evaluation of antennas coated using monolayer graphene in the millimeter and sub-millimeter wave bands. Int J Numer Model. 2021; 34:e2929. https://doi.org/10.1002/jnm.2929, which has been published in final form at https://doi.org/10.1002/jnm.2929. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving.