A warning about metamaterials for users of frequency-domain numerical simulators

被引：18

作者：

Oliveri, Giacomo ^{[1
]}

Raffetto, Mirco ^{[1
]}

机构：

[1] Univ Genoa, Dept Biophys & Elect Engn, I-16145 Genoa, Italy

来源：

IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION | 2008年 / 56卷 / 03期

关键词：

boundary value problems; convergence of numerical methods; finite element methods; frequency domain analysis; metamaterials; numerical stability; waveguide discontinuity problems;

D O I：

10.1109/TAP.2008.916955

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：

It is shown that users of frequency-domain numerical simulators should be warned of the danger of using models with adjacent complementary media since such a configuration of materials can be a cause of a numerical instability which cannot be overcome by the presence of other lossy media or absorbing boundary conditions. The physical realizability at any frequency of models considering complementary media with sharp interfaces is then questioned by the contradiction between the deduced result and the one which holds true when the actual dielectric structure of metamaterials is considered.

引用

页码：792 / 798

页数：7

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