A Single-Layer Reflectarray Unit Cell with Enhanced Performance Using Dual Concentric Split-Circle Rings.
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| Title: | A Single-Layer Reflectarray Unit Cell with Enhanced Performance Using Dual Concentric Split-Circle Rings. |
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| Authors: | Yahya, Likaa S.1 likaasalim@ntu.edu.iq, Sayidmarie, Khalil H.2 kh.sayidmarie@uoninevah.edu.iq |
| Source: | Applied Computational Electromagnetics Society Journal. Feb2026, Vol. 41 Issue 2, p144-154. 11p. |
| Subjects: | Reflectarray antennas, Resonators, Computational electromagnetics, Eigenfrequencies, Frequency response, Antenna design |
| Abstract: | This paper proposes a dual-ring unit cell design for a single-layer reflectarray antenna. The element is attained using two concentric split-ring resonators, where each ring is divided into four equal sections. By adjusting the width, scaling, and radius of the concentric split-rings, two distinct resonance frequencies are realized in each ring, attributable to the electric length inside the rings. This approach yields a wider phase range for the reflection coefficient, with a nearly linear phase response. Three different configurations are investigated to identify the best performance parameters. The electromagnetic behavior of the proposed unit element is simulated using CST Microwave Studio Suite. The reflection characteristics are analyzed using the infinite-array model with Floquet port excitation. Hexahedral meshing is employed for the antenna configuration, with the mesh density adjusted according to the wavelength to validate sufficient resolution of the structural features. The unit cell was also investigated using the HFSS frequency-domain solver based on the finite integration technique. An equivalent circuit was found using the Advanced Design System (ADS). The simulation results indicate that all three configurations offer a broad phase variation, with the minimum phase of approximately 885° at 10 GHz in case 2, and a maximum phase slope of 68°/mm at 12 GHz in case 1, over the 8-12 GHz frequency range. The configuration in case 3 achieves the widest operational bandwidth of 26.8% centered at 10 GHz. [ABSTRACT FROM AUTHOR] |
| Copyright of Applied Computational Electromagnetics Society Journal is the property of River Publishers and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Links: – Type: pdflink Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 193821571 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: A Single-Layer Reflectarray Unit Cell with Enhanced Performance Using Dual Concentric Split-Circle Rings. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Yahya%2C+Likaa+S%2E%22">Yahya, Likaa S.</searchLink><relatesTo>1</relatesTo><i> likaasalim@ntu.edu.iq</i><br /><searchLink fieldCode="AR" term="%22Sayidmarie%2C+Khalil+H%2E%22">Sayidmarie, Khalil H.</searchLink><relatesTo>2</relatesTo><i> kh.sayidmarie@uoninevah.edu.iq</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Applied+Computational+Electromagnetics+Society+Journal%22">Applied Computational Electromagnetics Society Journal</searchLink>. Feb2026, Vol. 41 Issue 2, p144-154. 11p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Reflectarray+antennas%22">Reflectarray antennas</searchLink><br /><searchLink fieldCode="DE" term="%22Resonators%22">Resonators</searchLink><br /><searchLink fieldCode="DE" term="%22Computational+electromagnetics%22">Computational electromagnetics</searchLink><br /><searchLink fieldCode="DE" term="%22Eigenfrequencies%22">Eigenfrequencies</searchLink><br /><searchLink fieldCode="DE" term="%22Frequency+response%22">Frequency response</searchLink><br /><searchLink fieldCode="DE" term="%22Antenna+design%22">Antenna design</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: This paper proposes a dual-ring unit cell design for a single-layer reflectarray antenna. The element is attained using two concentric split-ring resonators, where each ring is divided into four equal sections. By adjusting the width, scaling, and radius of the concentric split-rings, two distinct resonance frequencies are realized in each ring, attributable to the electric length inside the rings. This approach yields a wider phase range for the reflection coefficient, with a nearly linear phase response. Three different configurations are investigated to identify the best performance parameters. The electromagnetic behavior of the proposed unit element is simulated using CST Microwave Studio Suite. The reflection characteristics are analyzed using the infinite-array model with Floquet port excitation. Hexahedral meshing is employed for the antenna configuration, with the mesh density adjusted according to the wavelength to validate sufficient resolution of the structural features. The unit cell was also investigated using the HFSS frequency-domain solver based on the finite integration technique. An equivalent circuit was found using the Advanced Design System (ADS). The simulation results indicate that all three configurations offer a broad phase variation, with the minimum phase of approximately 885° at 10 GHz in case 2, and a maximum phase slope of 68°/mm at 12 GHz in case 1, over the 8-12 GHz frequency range. The configuration in case 3 achieves the widest operational bandwidth of 26.8% centered at 10 GHz. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Applied Computational Electromagnetics Society Journal is the property of River Publishers and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.13052/2026.ACES.J.410205 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 11 StartPage: 144 Subjects: – SubjectFull: Reflectarray antennas Type: general – SubjectFull: Resonators Type: general – SubjectFull: Computational electromagnetics Type: general – SubjectFull: Eigenfrequencies Type: general – SubjectFull: Frequency response Type: general – SubjectFull: Antenna design Type: general Titles: – TitleFull: A Single-Layer Reflectarray Unit Cell with Enhanced Performance Using Dual Concentric Split-Circle Rings. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Yahya, Likaa S. – PersonEntity: Name: NameFull: Sayidmarie, Khalil H. IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 02 Text: Feb2026 Type: published Y: 2026 Identifiers: – Type: issn-print Value: 10544887 Numbering: – Type: volume Value: 41 – Type: issue Value: 2 Titles: – TitleFull: Applied Computational Electromagnetics Society Journal Type: main |
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