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Appl. Sci. 2018, 8(1), 102; https://doi.org/10.3390/app8010102

Surface Waves Propagating on Grounded Anisotropic Dielectric Slab

1
School of Information Engineering, Guangdong University of Technology, Guangzhou 510006, China
2
School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore 639798, Singapore
*
Author to whom correspondence should be addressed.
Received: 27 November 2017 / Revised: 24 December 2017 / Accepted: 9 January 2018 / Published: 11 January 2018
(This article belongs to the Special Issue Surface Waves on Planar Photonic Crystals)
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Abstract

This paper investigates the characteristics of surface waves propagating on a grounded anisotropic dielectric slab. Distinct from the existing analyses that generally assume that the fields of surface wave uniformly distribute along the transverse direction of the infinitely large grounded slab, our method takes into account the field variations along the transverse direction of a finite-width slab. By solving Maxwell’s equations in closed-form, it is revealed that no pure transverse magnetic (TM) or transverse electric (TE) mode exists if the fields are non-uniformly distributed along the transverse direction of the grounded slab. Instead, two hybrid modes, namely quasi-TM and quasi-TE modes, are supported. In addition, the propagation characteristics of two hybrid modes supported by the grounded anisotropic slab are analyzed in terms of the slab thickness, slab width, as well as the relative permittivity tensor of the anisotropic slab. Furthermore, different methods are employed to compare the analyses, as well as to validate our derivations. The proposed method is very suitable for practical engineering applications. View Full-Text
Keywords: anisotropic metamaterial; grounded dielectric slab; guided waves; surface waves anisotropic metamaterial; grounded dielectric slab; guided waves; surface waves
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
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Chen, Z.; Shen, Z. Surface Waves Propagating on Grounded Anisotropic Dielectric Slab. Appl. Sci. 2018, 8, 102.

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