Improvement of FDTD method regarding cloaking metamaterials by interpolation

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The finite-difference time-domain (FDTD) algorithm is a powerful, versatile tool for electromagnetic analysis. In this work, the stability of FDTD is analyzed regarding metamaterials and improved by stably interpolating adjacent fields. The interpolation operation was applied to metamaterials such as the invisibility cloak, the field rotator, and the field concentrator. As a result, field distortion disappeared and computation efficiency was increased as large spatial step sizes became available. The proposed method also resulted in smaller dispersion compared with the conventional FDTD method. The suggested method is applicable to other metamaterials and can be used to efficiently analyze large-scale metamaterial structures with FDTD
Publisher
TAYLOR & FRANCIS LTD
Issue Date
2016
Language
English
Article Type
Article
Keywords

TIME-DOMAIN SIMULATION; ELECTROMAGNETIC CLOAKS

Citation

JOURNAL OF ELECTROMAGNETIC WAVES AND APPLICATIONS, v.30, no.10, pp.1366 - 1379

ISSN
0920-5071
DOI
10.1080/09205071.2016.1202783
URI
http://hdl.handle.net/10203/213187
Appears in Collection
EE-Journal Papers(저널논문)
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