Quasi-continuous metasurfaces for orbital angular momentum generation

Menglin L.N. Chen, Li Jun Jiang, Wei E.I. Sha

Research output: Journal article publicationJournal articleAcademic researchpeer-review

38 Citations (Scopus)

Abstract

A quasi-continuous composite perfect electric conductor-perfect magnetic conductor metasurface and a systematic metasurface design process are proposed for the orbital angular momentum (OAM) generation. The metasurfaces reflect the incident left circularly polarized (LCP)/right circularly polarized (RCP) plane wave to RCP/LCP vortex beams carrying OAM at normal or oblique direction. Unlike conventional metasurfaces that are composed of discrete scatterers, the scatterers on the proposed metasurface form a quasi-continuous pattern. The patterning of the metasurface is calculated through grating vectors, and no optimization of single scatterer is required. Furthermore, the distortions from local-response discontinuity of discrete scatterers are avoided. This letter provides great convenience to high-quality OAM generation.

Original languageEnglish
Article number8624314
Pages (from-to)477-481
Number of pages5
JournalIEEE Antennas and Wireless Propagation Letters
Volume18
Issue number3
DOIs
Publication statusPublished - Mar 2019
Externally publishedYes

Keywords

  • Grating vector
  • Orbital angular momentum (OAM)
  • Quasi-continuous metasurface

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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