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Constraints on the temporal dispersion of passive metamaterials

In English

Författare

Summary, in English

Metamaterial applications such as cloaking, perfect lenses, and artificial permeability are restricted by

the frequency dependence of the permittivity, permeability, and index of refraction. Here, causality and passivity together with integral identities for Herglotz functions are used to construct sum rules. The sum rules relate the frequency dependence of the material parameters with their high- and low-frequency values. The corresponding physical bounds determine the minimum variations of the material parameters over a frequency interval. The results are illustrated with a numerical example for artificial permeability.

Publiceringsår

2011

Språk

Engelska

Publikation/Tidskrift/Serie

2011 XXXth URSI General Assembly and Scientific Symposium

Dokumenttyp

Konferensbidrag

Förlag

IEEE - Institute of Electrical and Electronics Engineers Inc.

Ämne

  • Electrical Engineering, Electronic Engineering, Information Engineering

Nyckelord

  • Metamaterial
  • sum rule

Conference name

XXXth URSI General Assembly, 2011

Conference date

2011-08-13 - 2011-08-20

Conference place

Istanbul, Turkey

Status

Published

Forskningsgrupp

  • Electromagnetic theory

ISBN/ISSN/Övrigt

  • ISBN: 978-1-4244-6051-9
  • ISBN: 978-1-4244-5117-3