Graphene-based frequency-reconfigurable slot antenna with gain enhancement using integrated metasurface for terahertz applications

Al Gburi, Ahmed Jamal Abdullah and Megahed, Amany A. and Mousa, Marwa E. and Elabd, Rania H. (2025) Graphene-based frequency-reconfigurable slot antenna with gain enhancement using integrated metasurface for terahertz applications. Optical and Quantum Electronics, 57 (555). pp. 1-27. ISSN 0306-8919

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Official URL: https://link.springer.com/article/10.1007/s11082-0...

Abstract

This paper presents a novel Frequency-Reconfigurable Slot Antenna (FRSA) designed for terahertz (THz) applications, enhanced through the integration of a metasurface reflector (MSR). The antenna structure is fabricated on a flexible polyimide substrate and achieves reconfigurability via eight graphene-based switches that dynamically control the surface impedance. A 5×5-unit cell metasurface, placed 205 μm beneath the antenna, is employed to improve the radiation characteristics. Parametric simulations reveal that the antenna can operate across ten distinct switching states, enabling resonant frequencies ranging from 0.885 THz to 1.53 THz. The integration of the MSR results in noticeable improvements in radiation efficiency (up to 98%) and gain (up to 9.9 dB), whereas maintaining effective impedance matching in all states. The proposed design demonstrates excellent potential for use in flexible, miniaturized, and high-performance THz communication systems, offering dynamic spectral adaptability and improved radiation performance through metasurface-assisted tuning.

Item Type:	Article
Uncontrolled Keywords:	Frequency reconfigurable slot antenna (FRA), Terahertz (THz), Metasurface reflector (MSR), Graphene switches
Divisions:	Faculty Of Electronics And Computer Technology And Engineering
Depositing User:	Sabariah Ismail
Date Deposited:	23 Feb 2026 01:29
Last Modified:	23 Feb 2026 01:29
URI:	http://eprints.utem.edu.my/id/eprint/29509
Statistic Details:	View Download Statistic

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