An Enhanced Preconditioned JMCFIE-DDM for Analysis of Electromagnetic Scattering by Composite Objects


For electromagnetic wave scattering by composite conductor and dielectric objects, an economical integral equation solver is imperative. In this letter, An enhanced preconditioned hybrid approach combining a nonconformal, nonoverlapping domain decomposition methodology (DDM) and electrical/magnetic current combined-field integral equation (JMCFIE) is proposed. It provided a versatile method to decompose the complicated composite downside into simply solvable subdomains. To stop unphysical reflections from the touching the face of the subdomain, Robin-sort transmission conditions are used across the touching face of subdomains. An enhanced preconditioned inner-outer iteration scheme is employed in that DDM acts as a block Jacobi preconditioner for the whole system as the outer iteration, and a four-partition block-diagonal preconditioner (4PBDP) that's primarily based on self-interactions of the finest level clusters of multilevel fast multipole algorithm (MLFMA) is any utilized in the inner iteration resolution. In numerical examples, the efficiency of the proposed theme is shown.

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