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Hybrid Methods for Calculating Electrodynamic Tasks of Large Dimension

Keywords:

M.S. Miloserdov, A.I. Gigolo


A modern methods of simulated electrodynamics tasks, such as Method of Moment (MoM), Finite Element Method (FEM), Finite Difference Time Domain method (FDTD), and other, are sufficiently accurate and versatile. They can be used to solve eigenvalue boundary value problems in strip and slot structures, diffraction of electromagnetic waves on metal, dielectric and inhomogeneous bodies, radiation of antennas and antenna arrays. However, for calculation of electrodynamics problems of large dimensionality these methods require considerable hardware resources, and time of calculation becomes very large. In this work we consider a hybrid method of moment – method physical optic (MoM-PO), which drastically save hardware resources and time but does not have significant deterioration of calculations accuracy. The paper shows that the hybrid method of MoM-PO for minor errors can receive substantial savings in time and memory compared with the MoM to calculate large-scale problems, in terms of wavelengths. Geometry and relative position of objects also significantly affects jn the accuracy of the hybrid method, calculated by MoM and PO. The more edges, and sharp edges of the object, calculated by PO, the greater the accuracy of the hybrid method.
References:
June 24, 2020
May 29, 2020

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