Abstract
The finite element method is applied to the modeling of fringe currents and fields in a diffraction problem, where a perfectly conducting wedge is illuminated by a line source. A spatial superposition approach is employed to compute the fringe currents. The locally conformal perfectly matched layer approach is used to truncate the infinitely long conducting structure in a finite-sized domain. MATLAB codes are developed, and some numerical examples are demonstrated. The results are compared to those of the physical theory of diffraction and the method of moments.
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