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Vie present new implementations in the method of moments of two types of second-kind integral equations: (i) the recently proposed electric-magnetic field integral equation (EMFIE) for perfectly conducting objects, and (ii) the Müller formulation for homogeneous or piecewise homogeneous dielectric objects. We adopt the Taylor-orthogonal basis… (More)

The Multilevel Adaptive Cross Approximation (MLACA), an algorithm to solve MoM electromagnetic problems with computational cost O(N<sup>2</sup>) and a storage scaling with O(NlogN), is presented here and for the first time applied to a whole electromagnetic problem and not only to the interaction between blocks whose containing spheres do not intersect each… (More)

—Hypersingular 4-D integrals, arising in the Galerkin discretization of surface integral equation formulations, are computed by means of the direct evaluation method. The proposed scheme extends the basic idea of the singularity cancellation methods, usually employed for the regularization of the singular integral kernel, by utilizing a series of coordinate… (More)

A novel algorithm, the compressed block decomposition, is presented for highly accelerated direct (noniterative) method-of-moment capacitance extraction. The algorithm is based on a blockwise subdivision of the method-of-moment potential coefficient matrix. Matrix subblocks corresponding to distant subregions of the problem geometry are not calculated… (More)

The Method of Moments for electromagnetic scattering and radiation problems is often used in conjunction with the EFIE because the EFIE allows the analysis of open surfaces. For electrically large closed surfaces, the CFIE is often much more efficient because it yields a well conditioned impedance matrix. This is particularly important when an iterative… (More)

Numerical simulation of shipborne HF antennas involves some difficulties due to: 1. The ill-conditioned nature of the Electric Field Integral Equation (EFIE) discretized by the Method of Moments (MoM) [1] at low frequencies(“low-frequency breakdown”). 2. The different scaling between the antenna fine mesh and the ship surface coarse mesh… (More)

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