Multiband subwavelength magnetic reflectors based on fractals
Multiband subwavelength magnetic reflectors based on fractals
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DOI：
10.1063/1.1622122
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发表时间：
2003-10
影响因子：
4
通讯作者：
Lei Zhou;W. Wen;C. Chan;P. Sheng
中科院分区：
文献类型：
--
作者：
Lei Zhou;W. Wen;C. Chan;P. Sheng
我们用理论和实验来证明，复合材料，由金属平面分形和金属片由薄介电层分隔，可以反射电磁波同相在一系列频率，与一些相应的波长远长于反射器本身的尺寸。我们表明，物理是由一系列的内禀磁共振，可以很好地描述了一个有效的介质的频率依赖性的磁导率。
We use theory and experiment to demonstrate that a composite material, consisting of a metallic planar fractal and a metal sheet separated by a thin dielectric layer, can reflect electromagnetic wave in-phase at a series of frequencies, with some of the corresponding wavelengths much longer than the reflector’s own size. We show that the physics is governed by a series of intrinsic magnetic resonances and can be well described by an effective-media of frequency-dependent permeability.