MAXWELL-GARNETT MODELING OF UNIAXIAL CHIRAL COMPOSITES WITH BIANISOTROPIC INCLUSIONS

A generalized Maxwell Garnett model for artificial composites formed o f small bianisotropic particles arranged in three-dimensional arrays i s developed. Explicit expressions for averaged dyadic constitutive par ameters are given. The approach is suitable for the case of incomplete magnetoelectric coupling dyadics, since it leads to expressions which do not involve any inverses of these dyadics. Based on an analytical antenna model of single chiral particles, the averaged parameters can be easily evaluated. The theory is illustrated by numerical examples f or uniaxial chiral structures. Reflection coefficients from an ideal c onductor covered by uniaxial chiral slabs are calculated for different types of axially symmetric distributions of the inclusions. It is dem onstrated that for different frequency ranges different geometries cor respond to better reduction of reflection.