A Subcell Finite-Difference Time-Domain Implementation for Narrow Slots on Conductive Panels

Efficiently modeling thin features using the finite-difference time-domain (FDTD) method involves a considerable reduction in spatial mesh size. However, real-world scenarios, such reductions can lead to unaffordable memory and CPU requirements. In this manuscript, we present two stable efficient techniques FDTD handle narrow apertures on conductive panels. One technique employs conformal methods, while other utilizes subgridding methods. We validate their performance compared classical Gilbert-Holland model experimental results reverberation environments shed light these models’ actual confidence margins real electromagnetic compatibility (EMC) scenarios.