I am designing an on-chip inductor without metal shield and uses momentum to model the inductor. but then I wonder if Agilent momentum is able to calculate the effect of the eddy current in substrate. I heard from someone that because it is 2.5D simulator, the eddy current in the substrate is not taken care of. Also, there seems to be no meshing for the substrate. However, there is a resistance defined for the substrate, and also green function seems to be used, so I think it should be giving a 3D result.

Actually I do not understand what is so called 2.5D simulation. I think that the method of moment should really be giving the accurate 3D result, since I also used to be using it in antenna simulation. Or is Agilent momentum not based on the method of moment or only a simplified version of it?

Thanks!