Help with 2D FDFD code for free space wave propagation

Hi,

Could someone share 2D FDFD code for a scattering field problem, for my study purpose, please?

I have implemented a 2D FDFD code in matlab, for H mode (Hz) propagating in free space, there are reflections even when I put PML (20 cells) on x boundaries and assign periodic boundaries to y.


Thanks a lot,