Hexagonal higher-symmetric dielectric periodic structures for planar graded-index lenses

Shiyi Yang; Oskar Zetterstrom; Zhenghui Xue; Francisco Mesa; Oscar Quevedo-Teruel

doi:10.1063/5.0150007

Hexagonal higher-symmetric dielectric periodic structures for planar graded-index lenses

Shiyi Yang, Oskar Zetterstrom, Zhenghui Xue^*, Francisco Mesa, Oscar Quevedo-Teruel

^*Corresponding author for this work

School of Information and Electronics

Research output: Contribution to journal › Article › peer-review

8 Citations (Scopus)

Abstract

We investigate dispersion properties of a hexagonal dielectric periodic structure that can be used to engineer dielectric graded-index lenses. The connection between the geometry of the hexagonal periodic structure and its symmetries is explained. Furthermore, we demonstrate that a hexagonal structure with increased symmetry is more isotropic than its conventional counterpart. To validate our analysis, we designed, manufactured, and measured a planar Luneburg lens antenna. The antenna has a neat fan-shaped beam from 23 to 31 GHz. The results validate the broadband operation of the periodic structure and could be of interest for the design of cost-effective antennas.

Original language	English
Article number	011707
Journal	Applied Physics Letters
Volume	123
Issue number	1
DOIs	https://doi.org/10.1063/5.0150007
Publication status	Published - 3 Jul 2023

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AU - Quevedo-Teruel, Oscar

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Hexagonal higher-symmetric dielectric periodic structures for planar graded-index lenses

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