Open AccessKind of high directivity scanning radiation based on subwavelength periodic metal structure
Author(s) -
Wu Jin Jei,
Hou Da Jun,
Chiueh HerLih,
Shen JianQi,
Wu ChienJang,
Kao YaoHuang,
Lo WenChen,
Yang TzongJer,
Hsieh IngJar
Publication year - 2014
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
eISSN - 1350-911X
pISSN - 0013-5194
DOI - 10.1049/el.2014.0847
Subject(s) - directivity , leaky wave antenna , surface plasmon polariton , optics , radiation , physics , frequency band , dispersion (optics) , pencil (optics) , antenna (radio) , radiation pattern , surface plasmon , plasmon , acoustics , computer science , telecommunications , microstrip antenna
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.