Electromagnetic Scattering Modeling Method of Multiscale Structure Based on Absorbing Coating

A new inverse modeling method based on parametric equivalent electromagnetic parameters is proposed, whose object is multiscale structure of absorbing coating mixed with conductor. Based on effective medium theory and equivalent electromagnetic parameter characterization method of impedance matching theory, the dielectric electromagnetic model oriented to the principle of surface current is established, which can provide adaptive electromagnetic parameters for IE/PO+UTD joint simulation of absorbing coating material and metal multiscale structure. The accuracy of the electromagnetic parameter characterization and the electromagnetic model in the dielectric domain are verified by the collaborative computing of the integral equation as well as the high frequency approximation theory and test. Therefore, this method is suitable for electromagnetic simulation of stealthy composite materials and conductor multiscale structures.