Phase Reversal Technique Applied to Fishnet Metalenses
In this work, the fishnet metamaterial is applied to several converging metalenses by combining the zoning, reference phase, and phase reversal techniques. First, the zoning and reference phase techniques are implemented in several metalenses at 55 GHz (λ0=5.45 mm) with a short focal length of 1.5 λ...
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| Language: | English |
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Wiley
2018-01-01
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| Series: | International Journal of Antennas and Propagation |
| Online Access: | http://dx.doi.org/10.1155/2018/9461858 |
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| author | Victor Pacheco-Peña Igor V. Minin Oleg V. Minin Miguel Beruete |
| author_facet | Victor Pacheco-Peña Igor V. Minin Oleg V. Minin Miguel Beruete |
| author_sort | Victor Pacheco-Peña |
| collection | DOAJ |
| description | In this work, the fishnet metamaterial is applied to several converging metalenses by combining the zoning, reference phase, and phase reversal techniques. First, the zoning and reference phase techniques are implemented in several metalenses at 55 GHz (λ0=5.45 mm) with a short focal length of 1.5 λ0. Then, the phase reversal technique is applied to these metalenses by switching from a concave to a convex profile in order to change the phase distribution inside of them. The designs are evaluated both numerically and experimentally demonstrating that chromatic dispersion (the shift of the position of the focus at different frequencies) is reduced when using the phase-reversed profiles. It is shown how the position of the focus remains at the same location within a relatively broadband frequency range of ~4% around the design frequency without affecting the overall behaviour of the metalenses. The best performance is achieved with the design that combines both reference phase and phase reversal techniques, with an experimental position of the focus of 1.75 λ0, reduced side lobes, and a power enhancement of 6.5 dB. The metalenses designed here may find applications in situations where a wideband response and low side lobes are required because of the reduced chromatic aberrations of the focus. |
| format | Article |
| id | doaj-art-814fcbf7529045548bcd7ac5fae6b30a |
| institution | Kabale University |
| issn | 1687-5869 1687-5877 |
| language | English |
| publishDate | 2018-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Antennas and Propagation |
| spelling | doaj-art-814fcbf7529045548bcd7ac5fae6b30a2025-02-03T06:01:31ZengWileyInternational Journal of Antennas and Propagation1687-58691687-58772018-01-01201810.1155/2018/94618589461858Phase Reversal Technique Applied to Fishnet MetalensesVictor Pacheco-Peña0Igor V. Minin1Oleg V. Minin2Miguel Beruete3Emerging Technology and Materials Group, School of Engineering, Newcastle University, Merz Court, Newcastle upon Tyne NE1 7RU, UKNational Research Tomsk State University, Tomsk 634050, RussiaNational Research Tomsk State University, Tomsk 634050, RussiaAntennas Group-TERALAB, Universidad Pública de Navarra, Campus Arrosadía, 31006 Pamplona, SpainIn this work, the fishnet metamaterial is applied to several converging metalenses by combining the zoning, reference phase, and phase reversal techniques. First, the zoning and reference phase techniques are implemented in several metalenses at 55 GHz (λ0=5.45 mm) with a short focal length of 1.5 λ0. Then, the phase reversal technique is applied to these metalenses by switching from a concave to a convex profile in order to change the phase distribution inside of them. The designs are evaluated both numerically and experimentally demonstrating that chromatic dispersion (the shift of the position of the focus at different frequencies) is reduced when using the phase-reversed profiles. It is shown how the position of the focus remains at the same location within a relatively broadband frequency range of ~4% around the design frequency without affecting the overall behaviour of the metalenses. The best performance is achieved with the design that combines both reference phase and phase reversal techniques, with an experimental position of the focus of 1.75 λ0, reduced side lobes, and a power enhancement of 6.5 dB. The metalenses designed here may find applications in situations where a wideband response and low side lobes are required because of the reduced chromatic aberrations of the focus.http://dx.doi.org/10.1155/2018/9461858 |
| spellingShingle | Victor Pacheco-Peña Igor V. Minin Oleg V. Minin Miguel Beruete Phase Reversal Technique Applied to Fishnet Metalenses International Journal of Antennas and Propagation |
| title | Phase Reversal Technique Applied to Fishnet Metalenses |
| title_full | Phase Reversal Technique Applied to Fishnet Metalenses |
| title_fullStr | Phase Reversal Technique Applied to Fishnet Metalenses |
| title_full_unstemmed | Phase Reversal Technique Applied to Fishnet Metalenses |
| title_short | Phase Reversal Technique Applied to Fishnet Metalenses |
| title_sort | phase reversal technique applied to fishnet metalenses |
| url | http://dx.doi.org/10.1155/2018/9461858 |
| work_keys_str_mv | AT victorpachecopena phasereversaltechniqueappliedtofishnetmetalenses AT igorvminin phasereversaltechniqueappliedtofishnetmetalenses AT olegvminin phasereversaltechniqueappliedtofishnetmetalenses AT miguelberuete phasereversaltechniqueappliedtofishnetmetalenses |