Table 1: Settings applied to the FIT-TS solver [32, 33] during the simulations of the slotted PIFAs.

Slotted PIFA simulation setup

Excitation signal Gaussian pulse, DC-7 GHz
Spatial discretization Hexahedral, nonuniform
Convergence condition  dB energy decay
Maximum cell size at
Absorbing boundary conditions 4-layer PML
Minium distance to PML boundary
Computational complexity,
(370–385) Yee cells
Computational complexity, MK2 Yee cells