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64937

Beam-Switching High Gain CP Graphene ME-Dipole Antenna for 5G MIMO Communications

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Last updated: 25 Dec 2024

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Abstract

A wideband circularly polarized (CP) graphene-based magneto-electric (ME) antenna with reconfigurable radiation characteristics for 5G MIMO communications is presented in this paper. It consists of graphene patches deposited on silicon oxide substrate arranged horizontally and vertically to act as a ME-antenna. The reconfigurable conductivity of graphene is used to control the operating bandwidth of the antenna. The single element has an impedance matching bandwidth of 78.3 % with the circular polarized band of 61.2% for applying chemical potential, µc=2 eV. The effect of changing the graphene reconfigurable conductivity on the radiation characteristics of the ME-antenna is investigated. The operating bandwidth is controlled by proper biasing the graphene sheet. The peak gain and the antenna efficiency are increased with increasing the chemical potential value due to the increase in graphene conductivity. The mutual coupling between ME-antenna elements is investigated for linear and circular arrangement. Octagonal array consists of 8-similar elements are constructed to produce electronic beam switching in different directions. Single beam, dual-beams, and omni-directional beam is achieved by controlling the graphene conductivity of single, two, and all the ME-elements in the array. Three ring array are designed to switch the beam in different angles for highest coverage area.

DOI

10.21608/mjeer.2019.64937

Keywords

Graphene, Beam switching, Magnetio-Electric antenna

Authors

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A.

Last Name

Ghazi

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Affiliation

Faculty of Engineering, Pharos University Alexandria, Egypt

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First Name

Saber

Last Name

Zainud-Deen

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Affiliation

Faculty of Electronic Eng., Menoufia University, Menouf, Egypt,

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First Name

Hend

Last Name

Malhat

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Faculty of Electronic Eng., Menoufia University, Menouf, Egypt,

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Volume

28

Article Issue

ICEEM2019-Special Issue

Related Issue

9704

Issue Date

2019-12-01

Receive Date

2019-12-12

Publish Date

2019-12-01

Page Start

8

Page End

13

Print ISSN

1687-1189

Online ISSN

2682-3535

Link

https://mjeer.journals.ekb.eg/article_64937.html

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https://mjeer.journals.ekb.eg/service?article_code=64937

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Original Article

Type Code

1,088

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Journal

Publication Title

Menoufia Journal of Electronic Engineering Research

Publication Link

https://mjeer.journals.ekb.eg/

MainTitle

Beam-Switching High Gain CP Graphene ME-Dipole Antenna for 5G MIMO Communications

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Article

Created At

22 Jan 2023