Ergül, ÖzgürGürel, Levent2016-02-082016-02-0820060379-6566http://hdl.handle.net/11693/27232Date of Conference: 6-10 November 2006Conference Name: European Conference on Antennas and Propagation, EuCAP 2006We present the linear-linear (LL) basis functions to improve the accuracy of the magnetic-field integral equation (MFIE) and the combined-field integral equation (CFIE) for three-dimensional electromagnetic scattering problems involving large scatterers. MFIE and CFIE with the conventional Rao-Wilton-Glisson (RWG) basis functions are significantly inaccurate even for large and smooth geometries, such as a sphere, compared to the solutions by the electric-field integral equation (EFIE). By using the LL functions, the accuracy of MFIE and CFIE can be improved to the levels of EFIE without increasing the computational requirements and with only minor modifications in the existing codes based on the RWG functions.EnglishBasis functionsCombined-field integral equationMagnetic-field integral equationMultilevel fast multipole algorithmScattering problemsComputational geometryElectric fieldsIntegral equationsLinear-linear (LL) basis functionsRao-Wilton-Glisson (RWG)Electromagnetic wave scatteringConference Paper