Propagation Features of Metamaterial NRD Waveguides

Author

Baccarelli, P. ; Burghignoli, P. ; Frezza, F. ; Galli, A. ; Lampariello, P. ; Paulotto, S.

Author_Institution

Dept. of Electron. Eng., Rome `La Sapienza" Univ.

fYear

2006

fDate

11-16 June 2006

Firstpage

1639

Lastpage

1642

Abstract

Nonradiative dielectric (NRD) waveguides comprised of time-dispersive isotropic double-negative or single-negative slabs sandwiched between metal plates are studied. Dispersion features of bound (surface) modes are considered, showing how to achieve ranges of unimodal backward propagation by means of epsilon-negative media. Such ranges allow us to relax the symmetry constraints, typical of ordinary double-positive NRD guides, aimed at avoiding the excitation of the undesired LSE₀₁ dominant mode. Complex proper leaky modes supported by double-negative NRD guides are also illustrated, which show physical ranges of radiation into the first higher-order TE₁ mode of the background parallel-plate waveguide

Keywords

dispersion (wave); metamaterials; nonradiative dielectric waveguides; parallel plate waveguides; wave propagation; NRD; dispersion features; isotropic double-negative slabs; leaky waves; metal plates; metamaterial; nonradiative dielectric waveguides; parallel-plate waveguide; single-negative slabs; surface waves; symmetry constraints; time-dispersive slabs; unimodal backward propagation; Dielectric losses; Frequency; Magnetic materials; Metamaterials; Permittivity; Slabs; Strips; Surface waves; Tellurium; Waveguide components; Nonradiative dielectric waveguide; leaky waves; metamaterials; surface waves;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Symposium Digest, 2006. IEEE MTT-S International

Conference_Location

San Francisco, CA

ISSN

0149-645X

Print_ISBN

0-7803-9541-7

Electronic_ISBN

0149-645X

Type

conf

DOI

10.1109/MWSYM.2006.249671

Filename

4015257