A global analysis of numerical methods aimed at the direct computation of the field quantities in case of stationary and static electromagnetic fields is presented. The examined numerical methods allow similar computer code implementations around general purpose, finite element software kernel. The fundamentally different character of the methods is a direct consequence of the different interpretation given to the field quantities and of the choices made for their discretisation.
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International Research Centre for Telecommunications-transmission and Radar, Delft University of Technology, Mekelweg 4 2628 CD Delft, The Netherlands;