Riemann-Hilbert technique scattering analysis of metamaterial-based asymmetric 2D open resonators

Piotr M. Kamiński, Richard W. Ziolkowski, Samel Arslanagić

Research output: Contribution to journalArticlepeer-review

Abstract

The scattering properties of metamaterial-based asymmetric two-dimensional open resonators excited by an electric line source are investigated analytically. The resonators are, in general, composed of two infinite and concentric cylindrical layers covered with an infinitely thin, perfect conducting shell that has an infinite axial aperture. The line source is oriented parallel to the cylinder axis. An exact analytical solution of this problem is derived. It is based on the dual-series approach and its transformation to the equivalent Riemann-Hilbert problem. Asymmetric metamaterial-based configurations are found to lead simultaneously to large enhancements of the radiated power and to highly steerable Huygens-like directivity patterns; properties not attainable with the corresponding structurally symmetric resonators. The presented open resonator designs are thus interesting candidates for many scientific and engineering applications where enhanced directional near- and far-field responses, tailored with beam shaping and steering capabilities, are highly desired.

Original languageEnglish (US)
Article number10
JournalEPJ Applied Metamaterials
Volume4
DOIs
StatePublished - 2017

Keywords

  • Asymmetric resonators
  • Line source
  • Metamaterials
  • Riemann-Hilbert techniques
  • Scattering

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials

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