dc.contributor.author Ergül, O. en_US dc.contributor.author Gürel, L. en_US dc.date.accessioned 2016-02-08T10:02:15Z dc.date.available 2016-02-08T10:02:15Z dc.date.issued 2009-05-03 en_US dc.identifier.issn 0010-4655 dc.identifier.uri http://hdl.handle.net/11693/22600 dc.description.abstract We consider the accuracy of surface integral equations for the solution of scattering and radiation problems in electromagnetics. In numerical solutions, second-kind integral equations involving well-tested identity operators are preferable for efficiency, because they produce diagonally-dominant matrix equations that can be solved easily with iterative methods. However, the existence of the well-tested identity operators leads to inaccurate results, especially when the equations are discretized with low-order basis functions, such as the Rao-Wilton-Glisson functions. By performing a computational experiment based on the nonradiating property of the tangential incident fields on arbitrary surfaces, we show that the discretization error of the identity operator is a major error source that contaminates the accuracy of the second-kind integral equations significantly. en_US dc.language.iso English en_US dc.source.title Computer Physics Communications en_US dc.relation.isversionof http://dx.doi.org/10.1016/j.cpc.2009.04.020 en_US dc.subject Accuracy analysis en_US dc.subject First-kind integral equations en_US dc.subject Identity operator en_US dc.subject Low-order basis functions en_US dc.subject Second-kind integral equations en_US dc.subject Surface integral equations en_US dc.title Discretization error due to the identity operator in surface integral equations en_US dc.type Article en_US dc.department Department of Electrical and Electronics Engineering dc.department Computational Electromagnetics Research Center en_US dc.citation.spage 1746 en_US dc.citation.epage 1752 en_US dc.citation.volumeNumber 180 en_US dc.citation.issueNumber 10 en_US dc.identifier.doi 10.1016/j.cpc.2009.04.020 en_US dc.publisher ELSEVIER en_US
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