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This paper will discuss how to combine the preconditioned FE-BI-DDM matrix equation with the help of the reverse Cuthill-McKee (RCM) algorithm, ILU decomposition, and fast algorithm for matrix-vector multiplication in GMRES solver into a powerful method for modeling and understanding the scattering characteristics of cavity within a general body. Numerical results obtained using the proposed method...
Electromagnetic scattering from cavities can be accurately simulated using the formulation of finite element-boundary integral (FE-BI) equations with domain decomposition method (DDM). The matrix of its resultant system of equations is usually ill-conditioned and the resultant system of equations has to be preconditioned for speeding up iterative solution process. To precondition the resultant matrix...
A novel approach is developed here to predict electromagnetic radiation/scattering from finite planar periodic arrays of elements in grounded multilayered media with non- rectangular element truncation boundaries. This approach is considered as an extension to a conventional MoM solver developed for analyzing radiation/scattering from finite arrays with rectangular boundaries. An array shape matrix...
A method of moments (MoM) and closed-form Green's function approach are employed to characterize the radiation pattern of a center-fed helical microstrip antenna mounted on a superstrate of a circular conducting cylinder. An analytic expression for the current on the helical microstrip antenna is rigorously obtained by solving a mixed potential integral equation (MPIE) in the spatial domain. With...
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