Analysis of field through apertures by applying transmission line matrix method to electromagnetic topology simulations

Results from finite difference time domain simulation were compared with electromagnetic topology based simulation technique using transmission line matrix method for field penetration through the sub-wavelength apertures. Simulations show that electromagnetic topology technique can be applied for the analysis of electromagnetic fields penetration through apertures. Analysis also shows that the aperture size affects the temporal characteristics and frequency spectral components of the incident pulse. In addition, electromagnetic topology method results a reduction in the calculation grid by this technique results in enhanced simulation speed and less memory utilization.

I. Introduction

Simulations involving large electrical systems where electromagnetic fields penetrate through apertures and subsequently couples with cables etc. are difficult to perform. This is not only due to the complex nature of the problem but is also because of the number of mesh points generated, computational time, and memory management etc. Electromagnetic topology (EMT) based simulation is an alternate technique that addresses such concerns.