Ultrathin Complementary Metasurface for Orbital Angular Momentum Generation at Microwave Frequencies

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

Research output: Journal article publicationJournal articleAcademic researchpeer-review

124 Citations (Scopus)

Abstract

Electromagnetic (EM) waves with helical wave front carry orbital angular momentum (OAM), which is associated with the azimuthal phase of the complex electric field. OAM is a new degree of freedom in EM waves and is promising for channel multiplexing in the communication system. Although the OAM-carrying EM wave attracts more and more attention, the method of OAM generation at microwave frequencies still faces challenges, such as efficiency and simulation time. In this communication, by using the circuit theory and equivalence principle, we build two simplified models, one for a single scatter and one for the whole metasurface to predict their EM responses. Both of the models significantly simplify the design procedure and reduce the simulation time. In this communication, we propose an ultrathin complementary metasurface that converts a left-handed (right-handed) circularly polarized plane wave without OAM to a right-handed (left-handed) circularly polarized wave with OAM of arbitrary orders, and a high transmission efficiency can be achieved.

Original languageEnglish
Article number7738509
Pages (from-to)396-400
Number of pages5
JournalIEEE Transactions on Antennas and Propagation
Volume65
Issue number1
DOIs
Publication statusPublished - Jan 2017
Externally publishedYes

Keywords

  • Babinet's principle
  • circuit theory
  • equivalence principle
  • orbital angular momentum (OAM)
  • ultrathin complementary metasurface

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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