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J Electromagn Eng Sci > Volume 10(3); 2010 > Article
Journal of the Korean Institute of Electromagnetic and Science 2010;10(3):186-189.
DOI: https://doi.org/10.5515/JKIEES.2010.10.3.186   
Experimental Investigation of R(ω), T(ω) and L(ω) for Multi-Layer SRRs and Wires Metamaterials
Hao Luo, Xian Wang, Zhangqi Liao, Tao Wang, Rongzhou Gong
Department of Electronic Science and Technology, Huazhong University of Science and Technology
Reflection(R($omega$)), transmission(T($omega$)) and loss(L($omega$)) characteristics of multi-layer metamaterials are investigated experimentally in free space with the incident EM waves perpendicular to the substrate plane. The sample is made of split-ring resonators(SRRs) and wires which are the typical model of metamaterials. The R($omega$) and T($omega$) of multi-layer metamaterials have been calculated from the measured S-parameters. In this paper, we got the impedance-matched result according to the curves of R($omega$), meanwhile the T($omega$) decreased with increasing number of layers. At last, we attained the result that the L($omega$) gets to nearly 98% around 8 GHz, with R($omega$)=T($omega$)=0. The design presented in this paper achieves experimented loss near unity.
Key words: Metamaterial, Loss, Characteristics, Multi-layer, Composite Structure
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