JOURNAL ARTICLE

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

  • Published In: Applied Physics Letters, 2023, v. 123, n. 1. P. 1 1 of 3

  • Database: Academic Search Ultimate 2 of 3

  • Authored By: Yang, Shiyi; Zetterstrom, Oskar; Xue, Zhenghui; Mesa, Francisco; Quevedo-Teruel, Oscar 3 of 3

Abstract

This article investigates the dispersion properties of hexagonal dielectric periodic structures for engineering graded-index (GRIN) lenses, focusing on a novel configuration with mirrored half-turn symmetry that enhances isotropy and lowers the effective refractive index compared to conventional hexagonal lattices. The study includes theoretical analysis, numerical simulations, and experimental validation through the design, 3D printing, and measurement of a planar GRIN Luneburg lens antenna operating from 23 to 31 GHz, demonstrating wide-angle beam scanning, broadband performance, and robustness suitable for millimeter-wave communication systems. The findings highlight that higher symmetry in the hexagonal lattice enables a larger dynamic range of refractive indices within manufacturing constraints, potentially improving lens performance and reducing aberrations in microwave and optical applications.

Additional Information

  • Source:Applied Physics Letters. 2023/07, Vol. 123, Issue 1, p1
  • Document Type:Article
  • Subject Area:Science
  • Publication Date:2023
  • ISSN:0003-6951
  • DOI:10.1063/5.0150007
  • Accession Number:164785176
  • Copyright Statement:Copyright of Applied Physics Letters is the property of American Institute of Physics 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.)

Looking to go deeper into this topic? Look for more articles on EBSCOhost.