HETEROGENEOUS CHIRAL MATERIALS MODELING ( MTWC MODEL) - THEORY, COMPARISON WITH EXPERIMENTAL RESULTS AND APPLICATIONS

After a brief overview of the concept of electromagnetic chirality, th is paper deals with a numerical simulation of isotropic composites wit h metallic chiral inclusions: computations of permittivity, permeabili ty and chirality parameter as functions of frequency are presented. Th e theoretical results are, step by step, compared with measurements of chiral composites at microwave frequencies. The application of such m edia in Radar Cross-Section (RCS) management and control is discussed. The introduction of chiral inclusions seems to make impedance matchin g possible and may lead to attractive shields with lower reflectivity and larger band-width. However the optimization of material characteri stics necessary to get a specific absorber remains a difficult task.