2017 Fiscal Year Final Research Report
Design of metamaterials based on equivalent circuit model with retarded electromagnetic coupling
| Project/Area Number |
15K06063
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Communication/Network engineering
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| Research Institution | Kyoto University |
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Principal Investigator |
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| Project Period (FY) |
2015-04-01 – 2018-03-31
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| Keywords | メタマテリアル / 遅延相互作用 / 等価回路モデル / 分散特性 / ライトライン / 単導体線路 |
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| Outline of Final Research Achievements |
We propose equivalent circuit models with retarded electromagnetic couplings for complex metallic structures. We deal with wired metallic spheres and theoretically derived the equivalent circuit models from Maxwell's equation. We prove that the retardation in the circuit characterizes the radiation loss. The retardation in the mutual couplings of the meta-atoms connects the resonant frequencies of each mode to the radiation loss. The dispersion characteristics of the periodic structure have singular points on the light-line and the loss at the right-hand side of the light-line is eliminated.
In order to model the single thin wire structures without return path, we propose the wave equation of linear charge density and current and represent the radiation loss by the feedback of the electric field generated by the terminals. We confirmed that the radiation loss by the proposed model agrees with the results by the method of moment.
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| Free Research Field |
電気回路
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