Open AccessInvestigation on the electromagnetic characteristics of lossy metamaterial covered dielectric cylinder
Author(s) -
Hailong Wang,
Qun Wu,
Meng Fan-Yi,
Le-Wei Li,
Jian Wu
Publication year - 2008
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.57.4883
Subject(s) - metamaterial , lossy compression , directivity , dielectric , cylinder , electromagnetic field , optics , near and far field , materials science , lossless compression , physics , electromagnetic radiation , acoustics , optoelectronics , geometry , computer science , antenna (radio) , telecommunications , mathematics , quantum mechanics , artificial intelligence , data compression , computer vision
The electromagnetic characteristics of the model with an electric line source radiating in the direction parallel to a lossy metamaterial covered infinitely long dielectric circular cylinder have been investigated. Firstly, the electromagnetic model is presented and the exact solution is derived. Secondly, this exact solution is employed in numerical calculations. The patterns of the near field under different electromagnetic parameters are obtained. The characteristics of the far field properties are also studied through the directivity and the normalized radiation resistance. Due to the effect of the negative refraction and the loss of the lossy metamaterial, in comparing the lossless metamaterial layer and the lossy conventional material layer, very different electromagnetic characteristics on the near and the far field of the lossy metamaterial covered dielectric cylinder are revealed.