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arXiv · 0707.1126

On some constraints that limit the design of an invisibility cloak

Huanyang Chen·Xunya Jiang·C. T. Chan
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Abstract

Using the idea of transformation medium, a cloak can be designed to make a domain invisible for one target frequency. In this article, we examine the possibility to extend the bandwidth of such a cloak. We obtained a constraint of the band width, which is summarized as a simple inequality that states that limits the bandwidth of operation. The constraint originates from causality requirements. We suggest a simple strategy that can get around the constraint.

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Huanyang Chen, Xunya Jiang, C. T. Chan. 2007-07-11. On some constraints that limit the design of an invisibility cloak. https://doi.org/10.1103/physrevb.76.241104

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