ISOTROPIC CHIRAL COMPOSITE MODELING - COMPARISON BETWEEN ANALYTICAL, NUMERICAL, AND EXPERIMENTAL RESULTS

Electromagnetic properties of artificial isotropic chiral composites a re calculated based on the analytical antenna model for the polarizabi lities of small bianisotropic wire-and-loop particles and on a numeric al simulation technique. Averaged media parameters are estimated using the Maxwell-Garnett model. Theoretical results are compared with the transmission coefficients for a composite slab measured at microwave f requencies. The analytical model is seen to provide an accurate descri ption in the area of the first resonance of the structure and at lower frequencies, which corresponds to the approximations made in the theo retical modeling. (C) 1994 John Wiley & Sons, Inc.