• Title/Summary/Keyword: Metamaterials

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Analysis of Multilayer Slab with Lossy Metamaterials (손실 특성의 메타 물질이 포함된 다층 구조 Slab의 특성 분석)

  • Lee, Kyung-Won;Hong, Ic-Pyo;Chung, Yeong-Chul;Yook, Jong-Gwan
    • The Journal of Korean Institute of Electromagnetic Engineering and Science
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    • v.19 no.12
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    • pp.1384-1393
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    • 2008

  • In this paper, we analyzed the multilayer structure with lossy metamaterials using ABCD Matrix method to get the transmission characteristics. Compared to the recursive method which cannot be used to analyze the lossy characteristics of multilayer structure because of its complexity, we used the ABCD matrix method is easy to apply because of its matrix chain concepts for arbitrary number of multilayer structure and lossy material. To verify the results of this paper, we used both for multilayer dielectric and metamaterial, respectively, and obtained the same results. Multilayer structure with lossy metamaterial showed minimized ripple and broadband transmission compared to dielectric multilayered structure. This can be used in various applications as antenna radome and shielding material, etc.

  • https://doi.org/10.5515/KJKIEES.2008.19.12.1384 인용 PDF KSCI

Controllable electromagnetically-induced transparency-like response in a bilayer metamaterial

  • Hwang, J.S.;Yoo, Y.J.;Kim, Y.J.;Kim, K.W.;Rhee, J.Y.;Park, S.Y.;Lee, Y.P.
    • Proceedings of the Korean Vacuum Society Conference
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    • 2015.08a
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    • pp.234.2-234.2
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    • 2015

  • Recently, the electromagnetically-induced transparency (EIT)-like effect in metamaterials has attracted enormous interest. Metamaterial analogs of EIT enable promising applications in slow-light devices, low-loss metamaterial, quantum optics, and novel sensors. In this work, we experimentally and numerically studied a bilayer metamaterial for controllable EIT-like spectral response at microwave frequencies. Bilayer metamaterial consists of two snake-shape resonators (SSRs) with one and two bars. The transmission spectra were measured in a frequency range of 4 - 8 GHz in an anechoic chamber at normal incidence. It is found that two SSRs in the metamaterial are activated in bright modes, and the coupling between two bright modes leads to the EIT-like effect, which results in the enhanced transmission at 5.61 GHz. Furthermore, we confirm that the EIT-like feature could be controlled by adjusting the geometric parameters of metamaterial structure. Our work provides a way to tunable EIT-like effect and various potential applications including filters, sensors, and other microwave devices.

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