Solving the problem of electromagnetic wave diffraction on arbitrary shape screens using CUDA

The paper considers the algorithm for solving the problem of electromagnetic (EM) wave diffraction on flat arbitrary shape screens using the CUDA parallel programming technology. The problem is formulated as an integro-differential equation and solved by the method of moments (Galerkin method). The authors have chosen RWG functions as basis and testing functions. They have developed a simple and fast algorithm for triangulating a domain with an arbitrary boundary to construct the corresponding RWG elements on GPU. Numerical results were presented for the diffraction problem on canonical and complex shape screens. The obtained solution is in good agreement with the results of the previous studies. The paper also presents a comparative analysis of the execution time of serial and parallel algorithms. It is shown that the use of CUDA technology significantly speeds up the solving of the problem of EM wave diffraction on flat metal arbitrary shape screens.