Title: Broadband polarisation-independent metamaterial based on modified ELC structure

Authors: Yongjune Kim; Myoungsik Kim; Yongshik Lee; Jinwoo Park; Ilsung Seo; Il-Suek Koh

Addresses: Department of Electrical and Electronic Engineering, Yonsei University, Seoul, 120-749, South Korea ' Department of Electrical and Electronic Engineering, Yonsei University, Seoul, 120-749, South Korea ' Department of Electrical and Electronic Engineering, Yonsei University, Seoul, 120-749, South Korea ' Agency for Defense Development, Daejeon, 305-152, South Korea ' Agency for Defense Development, Daejeon, 305-152, South Korea ' Department of Electronic Engineering, Inha University, Incheon, 402-751, South Korea

Abstract: A broadband polarisation-independent metamaterial is proposed by combining modified electric-LC (ELC) metamaterials that are orthogonally aligned with each other and metal coated by via hole. Using electrically induced current along a metal patch, the broadband permittivity which is always greater than that of the substrate is determined. The maximum permittivity, which is about 25% higher than that of the substrate, is confirmed. The proposed metamaterial is verified by full-wave simulations and experiments for six differently polarised incident waves and frequencies from 6 GHz to 10 GHz.

Keywords: broadband permittivity; polarisation-independent metamaterials; ELC metamaterials; refractive indices; electric-LC; simulation.

DOI: 10.1504/IJNT.2016.077080

International Journal of Nanotechnology, 2016 Vol.13 No.4/5/6, pp.299 - 308

Published online: 19 Jun 2016 *

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