An effective-medium model for high-impedance surfaces

被引:46
作者
Hao, J. M.
Zhou, L. [1 ]
Chan, C. T.
机构
[1] Fudan Univ, Dept Phys, Surface Phys Lab, Shanghai 200433, Peoples R China
[2] Hong Kong Univ Sci & Technol, Dept Phys, Kowloon, Hong Kong, Peoples R China
来源
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING | 2007年 / 87卷 / 02期
关键词
D O I
10.1007/s00339-006-3825-4
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
We show that high-impedance surfaces with complex microstructures can be well described by a double-layer effective-medium model consisting of an anisotropic meta-material layer (with a dispersive permeability mu) put on top of a metal sheet. We predict that a complete surface wave (SW) gap exists in such a system when the condition 0 <mu < 1 is fulfilled, and we verify this prediction by finite-difference-time-domain (FDTD) simulations on realistic structures. We argue that opening a SW gap in the in-phase reflection regime requires an additional mechanism for such kinds of systems, and demonstrate this argument via FDTD simulations on two commonly adopted structures.
引用
收藏
页码:281 / 284
页数:4
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