Computational Design and Analysis of Beam-generating Shells with Elliptical Cavities Made of Near-Zero-Index Materials

Eriş Ö., ERGÜL Ö. S.

2023 Photonics and Electromagnetics Research Symposium, PIERS 2023, Prague, Czech Republic, 3 - 06 July 2023, pp.2068-2072 identifier

  • Publication Type: Conference Paper / Full Text
  • Doi Number: 10.1109/piers59004.2023.10221500
  • City: Prague
  • Country: Czech Republic
  • Page Numbers: pp.2068-2072
  • Middle East Technical University Affiliated: Yes

Abstract

We present computational design and analysis of near-zero-index (NZI) shell structures with elliptical cavities, which can provide directional radiation characteristics when excited by isotropic sources. Alternative strategies, such as geometric shaping of internal cavities, using pyramidal textures, and selecting suitable material properties, are employed to create symmetric and asymmetric beams.