Evanescent-mode dielectric metamaterial structure excited by NRD guide and its application to leaky wave antenna

Author

Michishita, Naobumi ; Ueda, Tetsuya ; Lai, Anthony ; Itoh, Tatsuo

Author_Institution

Univ. of California, Los Angeles

fYear

2007

fDate

9-15 June 2007

Firstpage

2345

Lastpage

2348

Abstract

The end coupling between the 1-D DR-based CRLH TL and a NRD guide has been proposed and investigated for impedance matching. Numerical simulations confirmed that the impedance matching can be realized for both the balanced and unbalanced CRLH TLs with the NRD guide feed. A leaky wave antenna based on the 1-D CRLH TL fed by NRD guide was designed, and the numerical and measured radiation patterns are used to verify the leaky backward wave propagation along the designed CRLH TL structure. The evanescent-mode CRLH TL has potential as a low-loss circuit in the millimeter-wave region and beyond.

Keywords

antenna feeds; antenna radiation patterns; coupled transmission lines; dielectric materials; electromagnetic wave propagation; impedance matching; leaky wave antennas; metamaterials; nonradiative dielectric waveguides; CRLH TL; NRD guide feed; end coupling; evanescent-mode dielectric metamaterial structure; impedance matching; leaky backward wave propagation; leaky wave antenna; low-loss circuit; millimeter-wave region; radiation patterns; Antenna measurements; Antenna radiation patterns; Dielectrics; Feeds; Impedance matching; Leaky wave antennas; Metamaterials; Millimeter wave circuits; Millimeter wave measurements; Numerical simulation;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium, 2007 IEEE

Conference_Location

Honolulu, HI

Print_ISBN

978-1-4244-0877-1

Electronic_ISBN

978-1-4244-0878-8

Type

conf

DOI

10.1109/APS.2007.4396002

Filename

4396002