Kind of high directivity scanning radiation based on subwavelength periodic metal structure

Author

Jin Jei Wu ; Da Jun Hou ; Her-Lih Chiueh ; Jian-Qi Shen ; Chien-Jang Wu ; Yao-Huang Kao ; Wen-Chen Lo ; Tzong-Jer Yang ; Ing-Jar Hsieh

Author_Institution

Dept. of Electr. Eng., Chung Hua Univ., Hsinchu, Taiwan

Volume

50

Issue

22

fYear

2014

fDate

10 23 2014

Firstpage

1611

Lastpage

1613

Abstract

A new kind of leaky wave antenna based on low-frequency surface plasmon polaritons (SPPs) is proposed, which is constructed by periodic metallic blocks with an open slot on the top. Numerical analysis shows that by introducing the open slot on the metallic blocks, there will appear extra spoof SPPs modes in the band gap of metallic solid blocks. The dispersion curve of such spoof SPPs modes passes through the light line and enters into the radiation region, and consequently it can generate a frequency steering pencil-like radiation. Experimental verification agrees with the theory.

Keywords

leaky wave antennas; metamaterial antennas; plasmonics; polaritons; surface plasmons; dispersion curve; frequency steering pencil-like radiation; high directivity scanning radiation; leaky wave antenna; low frequency surface plasmon polariton; metallic solid block band gap; open slot; periodic metallic block; subwavelength periodic metal structure;

fLanguage

English

Journal_Title

Electronics Letters

Publisher

iet

ISSN

0013-5194

Type

jour

DOI

10.1049/el.2014.0847

Filename

6937265