Sufficient Conditions for Zero Backscattering by a Uniaxial Dielectric-Magnetic Scatterer Endowed with Magnetoelectric Gyrotropy

Hamad M. Alkhoori, Akhlesh Lakhtakia, James K. Breakall, Craig F. Bohren

Research output: Contribution to journalArticle

Abstract

As vector wavefunctions are available to represent incident and scattered fields in an isotropic dielectric-magnetic medium endowed with magnetoelectric gyrotropy, a transition matrix can be conceptualized to relate the scattered field coefficients to the incident field coefficients for scattering by an arbitrary scatterer composed of a linear medium. The elements of the transition matrix must satisfy certain conditions for zero backscattering. For a scatterer composed of a uniaxial dielectric-magnetic medium endowed with magnetoelectric gyrotropy, the extended boundary condition method (EBCM) can be formulated to determine the transition matrix. The numerical results obtained thereby lead to the formulation of a sufficient set of three zero-backscattering conditions: (i) the scatterer is a body of revolution with the incident plane wave propagating along the axis of revolution; (ii) the impedances of both mediums are identical; and (iii) the magnetoelectric-gyrotropy vectors of both mediums are aligned along the axis of revolution, whether or not both magnetoelectric-gyrotropy vectors are co-parallel.

Original languageEnglish (US)
Article number8839694
Pages (from-to)1023-1030
Number of pages8
JournalIEEE Transactions on Antennas and Propagation
Volume68
Issue number2
DOIs
StatePublished - Feb 2020

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All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering

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