Experimental Verification of the Effective Medium Properties of a Transmission-Line Metamaterial on a Skewed Lattice

Author

Selvanayagam, Michael ; Eleftheriades, George V.

Author_Institution

Dept. of Electr. & Comput. Eng., Univ. of Toronto, Toronto, ON, Canada

Volume

10

fYear

2011

fDate

7/3/1905 12:00:00 AM

Firstpage

1495

Lastpage

1498

Abstract

In this letter, we demonstrate, for the first time, an experimental verification of the effective medium properties of a transmission-line metamaterial on a skewed lattice first introduced in our other work (IEEE Trans. Microw. Theory Tech., vol. 59, no. 12, pp. 3272-3282, Dec. 2011). The experimental verification is based on observing refraction of a point source in an isotropic transmission-line metamaterial into an anisotropic transmission-line metamaterial. The anisotropic metamaterial is implemented with a skewed transmission-line lattice to achieve a full material tensor. The effective medium properties of the skewed transmission-line metamaterial are confirmed by comparing the corresponding measured fields to those simulated in an ideal full-tensor anisotropic medium. This letter briefly reviews the theory behind a transmission-line metamaterial on a skewed lattice and presents the design, simulation, and measurement of anisotropic refraction in such a metamaterial.

Keywords

electromagnetic wave refraction; metamaterials; tensors; transmission line theory; anisotropic refraction measurement; anisotropic transmission-line metamaterial; effective medium property; experimental verification; full-tensor anisotropic medium; isotropic transmission-line metamaterial; point source refraction; skewed transmission-line lattice; transmission-line metamaterial theory; Anisotropic; Dispersion; Lattices; Metamaterials; Transmission lines; Metamaterials; transformation electromagnetics; transmission lines;

fLanguage

English

Journal_Title

Antennas and Wireless Propagation Letters, IEEE

Publisher

ieee

ISSN

1536-1225

Type

jour

DOI

10.1109/LAWP.2011.2171909

Filename

6045295