Field Decomposition and Factorization of Helmholtz Determinant Operator for211 Bianisotropic Media

摘要

This paper generalizes the class of media for which the electromagnetic fields211u001ecan be decomposed in two independent components. Each of the two components see 211u001ethe medium as a simpler, so-called, equivalent medium. This generalization was 211u001epossible because it was realized that the plane-wave fields satisfy (E(times)D)-211u001e(H(times)B)=0. This discovery allows us to come to a consistent structure for the 211u001eclass of decomposable and factorizable bianisotropic media encompassing all 211u001epreviously studied media as special cases. The class of media is shown to be 211u001eclosed with respect to duality transformations. The equivalent media yield a new 211u001eclass of media allowing a closed-form representation of the Green dyadics.