DIRECTIVE EM RADIATION OF A LINE SOURCE IN THE PRESENCE OF A COATED NIHILITY CYLINDER

被引：19

作者：

Ahmed, S. ^{[1
]}

Naqvi, Q. A. ^{[1
]}

机构：

[1] Quaid I Azam Univ, Dept Elect, Islamabad, Pakistan

来源：

JOURNAL OF ELECTROMAGNETIC WAVES AND APPLICATIONS | 2009年 / 23卷 / 5-6期

关键词：

ELECTROMAGNETIC SCATTERING; NEGATIVE PERMITTIVITY; METAMATERIAL; INDEX; REFRACTION; WAVES; MEDIA;

D O I：

10.1163/156939309788019886

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Electromagnetic radiation of a line source scattered by a nihility cylinder, coated with a double positive (DPS) or double negative (DNG) layer, is investigated theoretically. The response of coated nihility circular cylinder is observed and it is noted that how the results obtained for this configuration differ from those of a coated perfect electric conductor (PEC) cylinder. It is assumed that both the nihility cylinder and the coating layer are infinite along the cylinder axis. The obtained numerical results are compared with the published literature. It is seen by the analysis that the directivity of the coated cylinder may be further increased when the PEC cylinder is replaced by a nihility cylinder as a core of the coated geometry at an optimized frequency.

引用

页码：761 / 771

页数：11

共 30 条

[1]

Ahmed S., 2008, Progress In Electromagnetics Research B, V10, P75, DOI 10.2528/PIERB08083101

[2] Electromagnetic scattering from a perfect electromagnetic conductor circular cylinder coated with a metamaterial having negative permittivity and/or permeability [J].