Hiding a bump on a PEC plane by using an isotropic lossless dielectric layer

Constantinos A. Valagiannopoulos, Nikolaos L. Tsitsas, Ari H. Sihvola

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

An infinite perfect electric conducting (PEC) plane on top of which lies a 2-D PEC object (bump) is excited by a plane wave. The main purpose of this work concerns the determination of the appropriate permittivity r and thickness $H$ of a lossless dielectric superstrate slab layer, placed on top of the overall structure of the PEC bump and the PEC plane, such that two objectives are fulfilled: 1) the plane wave reflection by the grounded slab configuration in the absence of the bump resembles closely that by the infinite PEC plane, and simultaneously 2) the contribution due to the presence of the bump itself on the scattered far-field radiated over all directions becomes as small as possible. A semianalytic integral equation methodology is developed to determine the field scattered by the bump configuration. Numerical results are presented demonstrating that indeed for certain regions of values of the superstrate's parameters both objectives 1) and 2) are met within significant numerical accuracy. Particularly, it is shown that $0<-{r}<1 may offer optimal cloaking characteristics. Finally, the results of the analysis as well as of the developed two objectives strategy are verified by appropriate computational simulations.

Original languageEnglish
Article number6895287
Pages (from-to)5706-5714
Number of pages9
JournalIEEE Transactions on Antennas and Propagation
Volume62
Issue number11
DOIs
Publication statusPublished - Nov 1 2014
Externally publishedYes

Fingerprint

conduction
Integral equations
Permittivity
slabs
plane waves
wave reflection
configurations
far fields
integral equations
methodology
permittivity
simulation

Keywords

  • Electromagnetic cloak
  • ENZ material
  • metallic edges
  • perfect electric conducting (PEC) bump

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Condensed Matter Physics

Cite this

Hiding a bump on a PEC plane by using an isotropic lossless dielectric layer. / Valagiannopoulos, Constantinos A.; Tsitsas, Nikolaos L.; Sihvola, Ari H.

In: IEEE Transactions on Antennas and Propagation, Vol. 62, No. 11, 6895287, 01.11.2014, p. 5706-5714.

Research output: Contribution to journalArticle

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