Dielectric-Resonator-Based Composite Right/Left-Handed Transmission Lines and Their Application to Leaky Wave Antenna

Author

Ueda, Tetsuya ; Michishita, Naobumi ; Akiyama, Masahiro ; Itoh, Tatsuo

Author_Institution

Dept. of Electron., Kyoto Inst. of Technol., Kyoto

Volume

56

Issue

10

fYear

2008

Firstpage

2259

Lastpage

2269

Abstract

Propagation and radiation characteristics of 1-D dielectric-resonator-based composite right/left-handed metamaterial structures with open mesh plates are investigated as a function of configuration parameters. The complex effective permittivity and permeability are estimated from the scattering parameters of the unit-cell structure. Based on this configuration, the single-mode transmission line is designed and the backfire-to-endfire frequency-scanned leaky wave antenna is implemented. It is found from numerical simulations that the 30-cell leaky wave antenna has a gain of 10 dBi with a scanning angle of over 90deg covering backfire-to-endfire directions. The measurement results show as wide beam-steering angles as numerically predicted.

Keywords

antenna radiation patterns; dielectric resonator antennas; electromagnetic wave scattering; leaky wave antennas; metamaterials; radiowave propagation; backfire-to-endfire frequency-scanned antenna; composite right left-handed transmission lines; dielectric-resonator-based transmission lines; leaky wave antenna; open mesh plates; propagation characteristics; radiation characteristics; scattering parameters; unit-cell structure; wide beam-steering angles; Dielectric resonator; leaky wave antenna; periodic structures; rectangular waveguides;

fLanguage

English

Journal_Title

Microwave Theory and Techniques, IEEE Transactions on

Publisher

ieee

ISSN

0018-9480

Type

jour

DOI

10.1109/TMTT.2008.2003524

Filename

4631474