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Single-beam graphene reflectarray for terahertz band communication

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Abstract

A graphene-based reflectarray antenna operating at 1.6 THz is introduced in this paper. This reflectarray has dimensions of \(20 \lambda \times 20 \lambda\) (3.75 mm× 3.75 mm) containing 40 × 40 (1600) cells. The dimensions of each cell are \(\lambda /2 \times \lambda /2\). Three different hexagonal-shaped unit cells are analyzed for the appropriate design. Reflection coefficient phase ranges for the three unit cells are 0°–190°, 0°–225° and 0°–525°, respectively. The unit cell (uc3), which gives the reflection phase of 525°, is chosen to construct the reflectarray antenna. The array cells are placed upon a silicon dioxide (SiO2) substrate. The feed is a horn antenna positioned at the focal point. The focal-length-to-diameter (F/D) ratio is one. The proposed reflectarray antenna is analyzed using the finite integration technique. Different unit cell sizes are used to compensate for the phase of the different path lengths. Maximum gains of 18.7, 19, and 17.7 dB are obtained at 1.5, 1.6, and 1.7 THz, respectively. In terms of the number of elements, the proposed structure has a very good gain.

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Data Availability Statement

The authors confirm that the data supporting the findings of this study are available within the article, and the manuscript has no associated data.

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Authors and Affiliations

  1. Department of Electronics and Electrical Communications Engineering, Faculty of Electronic Engineering, Menoufia University, Menouf, 32952, Egypt

    Ahmed A. Hassan, El-Sayed M. El-Rabie & Ahmed S. Elkorany

  2. Electronics Research Institute, Cairo, 12622, Egypt

    Rania R. Elsharkawy

  3. Faculty of Engineering, Kafrelsheikh University, Kafrelsheikh, 33516, Egypt

    Demyana A. Saleeb

Authors
  1. Ahmed A. Hassan
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  2. Rania R. Elsharkawy
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  3. Demyana A. Saleeb
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  4. El-Sayed M. El-Rabie
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  5. Ahmed S. Elkorany
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Correspondence to Ahmed S. Elkorany.

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Hassan, A.A., Elsharkawy, R.R., Saleeb, D.A. et al. Single-beam graphene reflectarray for terahertz band communication. Analog Integr Circ Sig Process 112, 517–525 (2022). https://doi.org/10.1007/s10470-022-02033-y

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  • DOI: https://doi.org/10.1007/s10470-022-02033-y

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