Title: Design of a wideband polarisation-independent metamaterial with arbitrary relative permittivity based on the dielectric mixing theory

Authors: Hyunsoo Lee; Il-Suek Koh; Yongshik Lee; Ilsung Seo

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

Abstract: We propose a design method for a wideband polarisation-independent metamaterial structure by randomly mixing dielectrics. The relative permittivity (or refractive index) of the metamaterial can be varied by the volume fraction of the mixed dielectric media. The required volume fraction can be estimated by the conventional mixing formula. The designed metamaterial can be easily fabricated with a conventional 3D printer. Measurement of the relative permittivity of the proposed medium is also performed, which shows that the proposed metamaterial has polarisation independence and operates in a wide frequency band.

Keywords: polarisation-independent metamaterials; mixing formula; broadband width; 3D printing; wideband permittivity; dielectric mixing; refractive index; metamaterial design.

DOI: 10.1504/IJNT.2016.077081

International Journal of Nanotechnology, 2016 Vol.13 No.4/5/6, pp.309 - 317

Published online: 20 Jun 2016 *

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