Equivalent-Circuit Model for Meta-Atoms Consisting of Wired Metallic Spheres

• HISAKADO Takashi

  Department of Electrical Engineering, Kyoto University

• YOSHIDA Keisuke

  Department of Electrical Engineering, Kyoto University

• MATSUSHIMA Tohlu

  Department of Electrical Engineering, Kyoto University

• WADA Osami

  Department of Electrical Engineering, Kyoto University

Abstract

An equivalent-circuit model is an effective tool for the analysis and design of metamaterials. This paper describes a systematic and theoretical method for the circuit modeling of meta-atoms. We focus on the structures of wired metallic spheres and propose a method for deriving a sophisticated equivalent circuit that has the same topology as the wires using the partial element equivalent circuit (PEEC) method. Our model contains the effect of external electromagnetic coupling: excitation by an external field modeled by voltage sources and radiation modeled by the radiation resistances for each mode. The equivalent-circuit model provides the characteristics of meta-atoms such as the resonant frequencies and the resonant modes induced by the current distribution in the wires by an external excitation. Although the model is obtained by a very coarse discretization, it provides a good agreement with an electromagnetic simulation.

Journal

• IEICE Transactions on Electronics

  IEICE Transactions on Electronics E100.C (3), 305-312, 2017

  The Institute of Electronics, Information and Communication Engineers

Keywords

• metamaterial
• meta-atom
• equivalent circuit
• wired metallic spheres
• PEEC

Details

• CRID: 1390282679354786432
• NII Article ID: 130005397853
• DOI: 10.1587/transele.e100.c.305
• ISSN: 17451353
• ISSN: 09168524
• HANDLE: 2433/252316
• Web Site: https://www.jstage.jst.go.jp/article/transele/E100.C/3/E100.C_305/_pdf
• Text Lang: en
• Data Source:
  • JaLC
  • IRDB
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed