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On the evaluation of self‐patch integrals in the method of moments

Starting with the general expression for the m‐dimensional scalar Green's function or its singular part, we transform the 2n‐dimensional moment integral into an n‐dimensional integral in the Fourier domain. This allows us to perform a powerful singularity extraction and to replace the singular Green's kernel by a nonsingular truncated kernel, for which the moment integrals can be evaluated by means of numerical‐quadrature methods. Additionally, when utilizing a Galerkin pulse basis, a double Gauss theorem permits us to replace the 2n‐dimensional moment integral with a 2(n − 1)‐dimensional boundary integral, again offering dimensionality and computational gain. © 2005 Wiley Periodicals, Inc. Microwave Opt Technol Lett 47: 22–26, 2005; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.21070