Resonance cone formation, reflection, refraction, and focusing in a planar anisotropic metamaterial

Author

Balmain, Keith G. ; Lüttgen, Andrea A E ; Kremer, Peter C.

Author_Institution

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

Volume

1

Issue

1

fYear

2002

fDate

6/24/1905 12:00:00 AM

Firstpage

146

Lastpage

149

Abstract

The material studied is a planar wire-grid network loaded with orthogonal capacitors and inductors. Over a ground plane and excited by a localized single-frequency source, this metamaterial exhibits conical high-field regions called "resonance cones." The cones exhibit specular reflection from boundaries and, with two such materials interfaced, the cones exhibit negative refraction as well as subwavelength focusing into a spot smaller than 1/20th of a free-space wavelength. Moment-method simulations and experiments show good agreement.

Keywords

UHF radio propagation; anisotropic media; electromagnetic wave reflection; electromagnetic wave refraction; focusing; method of moments; microwave materials; resonance; conical high-field regions; moment-method simulations; negative refraction; planar anisotropic metamaterial; planar wire-grid network; resonance cone formation; specular reflection; subwavelength focusing; Anisotropic magnetoresistance; Capacitors; Inductors; Magnetic resonance; Metamaterials; Partial differential equations; Permittivity; Plasma simulation; Plasma waves; Reflection;

fLanguage

English

Journal_Title

Antennas and Wireless Propagation Letters, IEEE

Publisher

ieee

ISSN

1536-1225

Type

jour

DOI

10.1109/LAWP.2002.807565

Filename

1159857