Hybrid Method Combining DGTD and TDIE for Wire Antenna-Dielectric Interaction
Keywords:
Electromagnetic coupling, hybrid solution methods, numerical analysis, time-domain analysis, wire antennasAbstract
This paper presents a hybrid method that effectively combines two versatile numerical methods - the discontinuous Galerkin time domain (DGTD) method and the time domain integration method (TDIE). The hybrid method is highly applicable to coupling problems involving arbitrarily-shaped thin-wires and dielectric structures with inhomogeneous lossy materials. The original problem can be divided into two sub-regions which are analyzed using the DGTD and the TDIE methods, respectively, and their solutions are exchanged via the interface of the sub-regions by using Huygens’ equivalence principle. To improve the efficiency of the hybrid method, a revised Courant– Friedrichs–Lewy (CFL) factor for the DGTD method is proposed, which could effectively reduce computation time. To validate the hybrid method and the revised CFL factor, several numerical examples are presented, proving the proposed method a promising scheme.
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References
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