Altium PCB EM simulation in Feko

[Leiser]

Hello,

I am trying to import in Feko a 4-layer PCB made in Altium to do an EM simulation of some filters.

I have been talked that the way to do it is to export the part of the layout from Altium to .step and aftwerwards to .igs. The problem we have found is that both top and bottom layers were exported correctly but not the inner two ground layers.

Does anyonoe know how to do it?

Thanks.