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The effectiveness of the proposed CMP-based regularization is demonstrated via the characterization of a hemispherical dielectric resonator antenna with an air gap. The resonator is excited by a feed probe. The need for fine discretization around the feed is justified by the need for properly modeling the curvature of the feed probe and the distribution of fields around it. The article demonstrates...
In this paper we wish to focus on some recent advances in the multilevel fast multipole algorithm (MLFMA). Three different topics will be discussed briefly: a seamless extension of the MLFMA to low frequencies, an asynchronous parallelization of the MLFMA suitable for grid computing environments and a new Calder on based preconditioner for the electric field integral equation (EFIE). This will be...
An efficient, accurate, and stable time-domain finite element-boundary integral (TD-FE- BI) solver for analyzing scattering and radiation from electrically large platforms supporting geometrically intricate antenna structures is presented. The proposed scheme separates the antenna and the platform by introducing a single boundary/interface surface. It then formulates vector-wave FE and combined field...
An efficient multilevel fast multipole algorithm (MLFMA) formalism to model radiation and scattering by/from large planar microwave structures is presented. The technique relies on an electric field integral equation (EFIE) formulation and a series expansion for the Green dyadic, based on the use of perfectly matched layers (PML). In this way, a new PML-MLFMA is developed to efficiently evaluate matrix-vector...
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