FDTD Modeling of electromagnetic cloaks

Author

Hao, Yang

Author_Institution

Dept. of Electron. Eng., Univ. of London, London

fYear

2008

fDate

9-12 Nov. 2008

Firstpage

12

Lastpage

13

Abstract

In this paper, a radial-dependent dispersive FDTD method is developed to model metamaterials based on coordinate transformation. Such artificial materials have been applied in developing electromagnetic cloaking devices, plane wave concentrators and wave polarization rotators. By using the time-domain numerical technique, the transient response and operational bandwidth of the proposed metamaterials is evaluated. It is demonstrated, for example, that the perfect "invisibility" from electromagnetic cloaks is only available for lossless metamaterials and within an extremely narrow frequency band.

Keywords

electromagnetic devices; finite difference time-domain analysis; metamaterials; microwave materials; transient response; coordinate transformation; electromagnetic cloaking device; metamaterials; operational bandwidth; plane wave concentrator; radial-dependent dispersive FDTD method; time-domain numerical technique; transient response; wave polarization rotator; Bandwidth; Dispersion; Electromagnetic devices; Electromagnetic modeling; Electromagnetic scattering; Electromagnetic wave polarization; Finite difference methods; Metamaterials; Time domain analysis; Transient response;

fLanguage

English

Publisher

ieee

Conference_Titel

Metamaterials, 2008 International Workshop on

Conference_Location

Nanjing

Print_ISBN

978-1-4244-2608-9

Electronic_ISBN

978-1-4244-2609-6

Type

conf

DOI

10.1109/META.2008.4723515

Filename

4723515