Dispersion study on scattering cross section of metamaterial cloak due to various cloaking parameters

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• 作者：Archana Rajput ; ^{rajput.archana07@gmail.com" class="auth_mail" title="E-mail the corresponding author} ; Kumar Vaibhav Srivastava ^{kvs@iitk.ac.in" class="auth_mail" title="E-mail the corresponding author}
• 关键词：Scattering cross section ; Metamaterial cloaking ; Invisibility ; Transformation optics
• 刊名：Optik - International Journal for Light and Electron Optics
• 出版年：2015
• 出版时间：October 2015
• 年：2015
• 卷：126
• 期：20
• 页码：2362-2367
• 全文大小：2491 K

文摘

Electromagnetic cloak is a device that has the potential to conceal an object by minimizing its total scattering cross section over a desired frequency. But due to causality constraints the material properties become dispersive which reduces cloaking bandwidth. In this work, the emphasis is on the study of various cloaking parameters like dispersive material properties, cloak dimensions, material losses which influence the real implementation of cloak. This work rigorously investigated the scattering performance at the design frequency and cloaking bandwidth for aforementioned parameters on the cloak design by utilizing a widely accepted term called total scattering cross section.