A new multilevel Green's function interpolation method for large scale EM simulations in RF ICs

A multilevel green function interpolation method to efficiently construct the EFIE MoM-matrix for 2D-periodic PEC structures in 3D space

“…To approximate for each source RWG the integrals of (the divergence of) the RWG with the interpolation functions in source boxes at a coarser level we apply lower-to-upper-level interpolation in the upward pass. To approximate the interpolation functions in test boxes at coarser levels in terms of the interpolation functions in the test boxes at finer levels we apply upper-to-lower-level interpolation in the downward pass [3,4].…”

“…A successful strategy to further reduce the computation time, suitable for large scale electromagnetic problems, is to apply fast iterative algorithms that make use of an efficient matrix-vector product. Especially interesting are kernel-independent fast algorithms, such as the Multilevel Green Function Interpolation Method (MLGFIM) [3,4,5], that have the potential to be applied in a periodic configuration and that could, in due time, be tailored to a layeredmedium Green function.…”