DocumentCode
2025058
Title
On the physical bounds of cloaking and invisibility
Author
Monticone, F. ; Alu, Andrea
Author_Institution
Dept. of Electr. & Comput. Eng., Univ. of Texas at Austin, Austin, TX, USA
fYear
2013
fDate
16-21 Sept. 2013
Firstpage
367
Lastpage
369
Abstract
We discuss fundamental physical bounds on the possibility of achieving electromagnetic invisibility for a given object and a given bandwidth, based on the passivity, causality and linearity of the scattering system. By applying Bode-Fano theory to an equivalent circuit for the scattering coefficients, we derive limitations on bandwidth and scattering reduction uniquely determined by the object to be cloaked and valid for any passive cloaking scheme.
Keywords
electromagnetic metamaterials; electromagnetic wave scattering; equivalent circuits; invisibility cloaks; Bode-Fano theory; bandwidth limitations; electromagnetic invisibility; equivalent circuit; fundamental physical bounds; passive cloaking; scattering coefficients; scattering reduction; scattering system causality; scattering system linearity; scattering system passivity; Bandwidth; Electromagnetic scattering; Equivalent circuits; Materials; RLC circuits;
fLanguage
English
Publisher
ieee
Conference_Titel
Advanced Electromagnetic Materials in Microwaves and Optics (METAMATERIALS), 2013 7th International Congress on
Conference_Location
Talence
Print_ISBN
978-1-4799-1229-2
Type
conf
DOI
10.1109/MetaMaterials.2013.6809055
Filename
6809055
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