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Optical and Quantum Electronics

Erschienen in:

01.04.2023

Designing of a circularly polarized reconfigurable graphene-based THz patch antenna with cross-shaped slot

verfasst von: Narges Kiani, Farzad Tavakkol Hamedani, Pejman Rezaei

Erschienen in: Optical and Quantum Electronics | Ausgabe 4/2023

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Abstract

In this paper, a circular patch antenna with cross-shaped slot is designed. Graphene has been used in the design of the said antenna. The proposed antenna structure has frequency reconfigurable capability. The central frequency of the antenna is considered to be 1.6 THz as required by the design. The cross-shaped slot reconfigurable graphene-based microstrip patch antenna is realized on a SiO₂ substrate. In the center of the designed circular patch antenna, a slot is placed in the form of two orthogonal physical arms, or in other words, a cross shape. And as a result, the distribution of the final current of the antenna will have an orthogonal domain in the farfield. Which will have a phase difference of 90 degrees. And this is the realization of circular polarization. In the range of 0.5 THz to 2 THz, cross-shaped slot reconfigurable graphene-based microstrip patch antenna has favorable conditions in terms of matching and polarization. Also, S₁₁ is less than − 15 dB for the target range. The axial ratio is obtained less than 2 dB. Obtaining an axial ratio below 3 dB is ideal for providing circular polarization. Radiation efficiency is about 59%. Finally, the results of radiation efficiency, 2D and 3D radiation patterns, E-field distribution, H-field distribution and surface current distribution have been considered.

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Titel: Designing of a circularly polarized reconfigurable graphene-based THz patch antenna with cross-shaped slot
verfasst von: Narges Kiani
Farzad Tavakkol Hamedani
Pejman Rezaei
Publikationsdatum: 01.04.2023
Verlag: Springer US
Erschienen in: Optical and Quantum Electronics / Ausgabe 4/2023
Print ISSN: 0306-8919
Elektronische ISSN: 1572-817X
DOI: https://doi.org/10.1007/s11082-023-04617-y

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