METHOD OF MOMENTS ANALYSIS OF ANISOTROPIC ARTIFICIAL MEDIA COMPOSED OF DIELECTRIC WIRE OBJECTS

The paper considers the periodic method of moments (PMM) analysis of a nisotropic artificial media composed of a 3-D periodic array of identi cal scatterers. The method is based upon finding the complex wavenumbe r(s), and the eigenfunction currents and fields, for a plane wave prop agating in the artificial medium. From these quantities, the effective tenser constitutive parameters are determined, It is shown that for a given direction of propagation through an artificial medium, there ar e two distinct modes of plane wave propagation, which may change with the direction of propagation, Examples are shown for the case where th e periodic scatterers are thin dielectric wire structures.