Leaky-wave radiation from planar negative-refractive-index transmission-line metamaterials

Author

Iyer, Ashwin K. ; Eleftheriades, G.V.

Author_Institution

Edward S. Rogers, Sr. Dept. of Electr. & Comput. Eng., Toronto Univ., Ont., Canada

Volume

2

fYear

2004

fDate

20-25 June 2004

Firstpage

1411

Abstract

This paper examines the radiation properties of one- and two-dimensional transmission-line negative-refractive-index (NRI) metamaterial antennas, and highlights the critical features of their dispersion characteristics as they pertain to leaky-wave radiation. This permits an explanation of the mechanisms with which backward, broadside or forward beams can be obtained from NRI transmission-line metamaterials. This discussion is supported by numerical simulations as well as by experimental results.

Keywords

electromagnetic wave refraction; leaky wave antennas; microstrip antenna arrays; periodic structures; planar antenna arrays; refractive index; transmission line theory; 1D transmission-line metamaterials; 2D metamaterials; antenna dispersion characteristics; backward beams; broadside beams; forward beams; leaky-wave radiation; microstrip grid; negative-refractive-index metamaterials; periodic structures; planar NRI metamaterials; stripline; transmission line theory; Analytical models; Capacitors; Inductors; Metamaterials; Numerical simulation; Refractive index; Shunt (electrical); Solid modeling; Transmission lines; Transmitting antennas;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium, 2004. IEEE

Print_ISBN

0-7803-8302-8

Type

conf

DOI

10.1109/APS.2004.1330451

Filename

1330451