Equivalent-Circuit Model with Retarded Electromagnetic Coupling for Meta-Atoms of Wired Metallic Spheres
Summary :
This paper describes the equivalent-circuit model of a metamaterial composed of conducting spheres and wires. This model involves electromagnetic coupling between the conductors, with retardation. The lumped-parameter equivalent circuit, which imports retardation to the electromagnetic coupling, is developed in this paper from Maxwell's equation. Using the equivalent-circuit model, we clarify the relationship between the retardation and radiation loss; we theoretically demonstrate that the electromagnetic retardation in the near-field represents the radiation loss of the meta-atom in the far-field. Furthermore, this paper focuses on the retarded electromagnetic coupling between two meta-atoms; we estimate the changes in the resonant frequencies and the losses due to the distance between the two coupled meta-atoms. It is established that the dependence characteristics are significantly affected by electromagnetic retardation.
- Publication
- IEICE TRANSACTIONS on Electronics Vol.E101-C No.12 pp.923-930
- Publication Date
- 2018/12/01
- Publicized
- Online ISSN
- 1745-1353
- DOI
- 10.1587/transele.E101.C.923
- Type of Manuscript
- PAPER
- Category
- Microwaves, Millimeter-Waves
Authors
Katsuya OHISHI
Kyoto University
Takashi HISAKADO
Kyoto University
Tohlu MATSUSHIMA
Kyoto University
Osami WADA
Kyoto University
Keyword
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Katsuya OHISHI, Takashi HISAKADO, Tohlu MATSUSHIMA, Osami WADA, "Equivalent-Circuit Model with Retarded Electromagnetic Coupling for Meta-Atoms of Wired Metallic Spheres" in IEICE TRANSACTIONS on Electronics,
vol. E101-C, no. 12, pp. 923-930, December 2018, doi: 10.1587/transele.E101.C.923.
Abstract: This paper describes the equivalent-circuit model of a metamaterial composed of conducting spheres and wires. This model involves electromagnetic coupling between the conductors, with retardation. The lumped-parameter equivalent circuit, which imports retardation to the electromagnetic coupling, is developed in this paper from Maxwell's equation. Using the equivalent-circuit model, we clarify the relationship between the retardation and radiation loss; we theoretically demonstrate that the electromagnetic retardation in the near-field represents the radiation loss of the meta-atom in the far-field. Furthermore, this paper focuses on the retarded electromagnetic coupling between two meta-atoms; we estimate the changes in the resonant frequencies and the losses due to the distance between the two coupled meta-atoms. It is established that the dependence characteristics are significantly affected by electromagnetic retardation.
URL: https://global.ieice.org/en_transactions/electronics/10.1587/transele.E101.C.923/_p
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@ARTICLE{e101-c_12_923,
author={Katsuya OHISHI, Takashi HISAKADO, Tohlu MATSUSHIMA, Osami WADA, },
journal={IEICE TRANSACTIONS on Electronics},
title={Equivalent-Circuit Model with Retarded Electromagnetic Coupling for Meta-Atoms of Wired Metallic Spheres},
year={2018},
volume={E101-C},
number={12},
pages={923-930},
abstract={This paper describes the equivalent-circuit model of a metamaterial composed of conducting spheres and wires. This model involves electromagnetic coupling between the conductors, with retardation. The lumped-parameter equivalent circuit, which imports retardation to the electromagnetic coupling, is developed in this paper from Maxwell's equation. Using the equivalent-circuit model, we clarify the relationship between the retardation and radiation loss; we theoretically demonstrate that the electromagnetic retardation in the near-field represents the radiation loss of the meta-atom in the far-field. Furthermore, this paper focuses on the retarded electromagnetic coupling between two meta-atoms; we estimate the changes in the resonant frequencies and the losses due to the distance between the two coupled meta-atoms. It is established that the dependence characteristics are significantly affected by electromagnetic retardation.},
keywords={},
doi={10.1587/transele.E101.C.923},
ISSN={1745-1353},
month={December},}
Copy
TY - JOUR
TI - Equivalent-Circuit Model with Retarded Electromagnetic Coupling for Meta-Atoms of Wired Metallic Spheres
T2 - IEICE TRANSACTIONS on Electronics
SP - 923
EP - 930
AU - Katsuya OHISHI
AU - Takashi HISAKADO
AU - Tohlu MATSUSHIMA
AU - Osami WADA
PY - 2018
DO - 10.1587/transele.E101.C.923
JO - IEICE TRANSACTIONS on Electronics
SN - 1745-1353
VL - E101-C
IS - 12
JA - IEICE TRANSACTIONS on Electronics
Y1 - December 2018
AB - This paper describes the equivalent-circuit model of a metamaterial composed of conducting spheres and wires. This model involves electromagnetic coupling between the conductors, with retardation. The lumped-parameter equivalent circuit, which imports retardation to the electromagnetic coupling, is developed in this paper from Maxwell's equation. Using the equivalent-circuit model, we clarify the relationship between the retardation and radiation loss; we theoretically demonstrate that the electromagnetic retardation in the near-field represents the radiation loss of the meta-atom in the far-field. Furthermore, this paper focuses on the retarded electromagnetic coupling between two meta-atoms; we estimate the changes in the resonant frequencies and the losses due to the distance between the two coupled meta-atoms. It is established that the dependence characteristics are significantly affected by electromagnetic retardation.
ER -
English
