2013 Fiscal Year Final Research Report
Study on reflection properties of two-dimensional periodic structure, and its application to the design of electromagnetic devices
| Project/Area Number |
23560072
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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 |
Engineering fundamentals
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| Research Institution | University of Miyazaki |
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Principal Investigator |
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| Project Period (FY) |
2011 – 2013
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| Keywords | 周期構造 / 有効誘電率 / 数値解析 / 電磁波素子 / 周波数フィルタ |
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| Research Abstract |
Two-dimensional periodical structure is modeled by the multilayer dielectric slab structure and the validity of the effective permittivity and verification of the scopes have been performed. The reflectance from the periodic structures is calculated by FDTD method. The effective permittivity of the dielectric slab is calculated by using the reflectance obtained by FDTD method.
At first, the reflectance from one-dimensional periodic structure was calculated by the FDTD method. Then, the effective permittivity of the equivalent dielectric slab was examined. The effective permittivity to the normalized frequency became discontinuous, and it turned out that the validity is narrow. In order to improve this discontinuous, the model which makes thickness of slab structure thin and it multilayers has been proposed. This proposal is working well to the structure presented in this research.
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