Performance of Customizable Cut-Wire-Based Metamaterial Absorbers: Absorbing Mechanism and Experimental Demonstration
Performance of Customizable Cut-Wire-Based Metamaterial Absorbers: Absorbing Mechanism and Experimental Demonstration
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DOI：
10.1109/tap.2012.2210180
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发表时间：
2012-12-01
影响因子：
5.7
通讯作者：
Christopoulos, Christos
中科院分区：
文献类型：
--
作者：
Wakatsuchi, Hiroki;Paul, John;Christopoulos, Christos
对可定制的基于切割线（CW）的超材料吸收体的性能进行了数值和实验研究。本文的第一部分对连续波基超材料吸波材料的基本吸波性能进行了数值研究。本文提出了两个简单的几何修改，以方便地提高吸波性能：使用几何对称性和更广泛的CW。论文的后半部分展示了使用衬有超材料吸收体的金属盒的基于CW的超材料吸收体的实验演示。金属盒具有谐振频率，该谐振频率降低金属盒的屏蔽效能，但是当引入多个CW吸收元件时该谐振频率消失。数值模拟也证实了吸收性能。基于CW的超材料吸收器具有几个重要特征，例如，简单的几何形状、任意的吸收性能的增强和降低以及多频带操作，这可以用于满足广泛的吸波器应用。
Performance of customizable cut-wire-based (CW-based) metamaterial absorbers is studied both numerically and experimentally. In the first part of the paper the fundamental absorbing performance of the CW-based metamaterial absorbers is numerically investigated. In this paper two simple geometrical modifications are proposed to easily enhance the absorbing performance: use of geometrical symmetries and wider CWs. The latter part of the paper shows an experimental demonstration of the CW-based metamaterial absorbers using a metal box lined with metamaterial absorber. The metal box has a resonant frequency which reduces the shielding effectiveness of the metal box but disappears when multiple CW absorbing elements are introduced. The absorbing performance is also confirmed by numerical simulations. The CW-based metamaterial absorbers have several important features, e.g., the simple geometry, both arbitrary enhancement and reduction of the absorbing performance and multiple band operation, which may be useful in satisfying a wide range of wave absorber applications.