A Hybrid Finite Element-Boundary Integral-Characteristic Basis Function Method for Scattering by Multiple 3-D Cavities
Keywords:
Boundary integral equation, characteristic basis function method, finite element method, multiple cavitiesAbstract
An efficient hybrid finite elementboundary integral-characteristic basis function method (FE-BI-CBFM) is proposed to solve the problem of electromagnetic scattering by multiple three-dimensional (3-D) cavities embedded in a conducting plane. Specifically, the finite element method is used to obtain the solution of the vector wave equation inside each cavity and the boundary integral equation is applied on the apertures of all the cavities as a global boundary condition. The resultant coupling system of equations is solved by using an excitation independent characteristic basis function method. Some numerical results are included to illustrate the validity and capability of the proposed method.
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