Hybrid MLFMA/MLACA for Analysis of Electromagnetic Scattering from Inhomogeneous High-Contrast Objects
Keywords:
Equivalent dipole-moment, multilevel adaptive cross approximation algorithm, multilevel fast multipole algorithm, volume-surface integral equationAbstract
An efficient hybrid method is proposed to analyze the electromagnetic scattering from the composite structures comprising PEC and inhomogeneous high-contrast dielectric materials with the volume-surface integral equation (VSIE) approach, which uses the main framework of the multilevel fast multipole algorithm (MLFMA) but adopts the multilevel adaptive cross approximation algorithm (MLACA) and the equivalent dipole-moment (EDM) to deal with part of the “strong” interaction of MLFMA. Numerical results are presented to demonstrate the accuracy and efficiency of the proposed scheme.
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