An Electromagnetic Topology and Transmission Line Matrix Hybrid Technique for Modeling High Power Electromagnetic Interactions

A combination of electromagnetic topology (EMT) and a transmission line matrix methodology to simulate an external electromagnetic pulse's interactions with cable network following penetration through apertures is presented. The results show improvements over previous simulations using EMT technique only. An array of the topological network has been created by the integration of the sub-network matrices based on the transmission line matrix (TLM) network. The simulation results for field penetration using this technique confirm the new combination approach and give good results when compared with an FDTD method. The transmission line-electromagnetic topology approach is simpler, less time consuming and for large systems is likely to save on mesh generation, simulation time without sacrificing on results. Analysis of the field propagation and penetration also shows the effects of the aperture size on the temporal characteristics and frequency spectral components of the incident Gaussian pulse.