Hi balaguru thavamani,
First thanx for the answer, but actually I know that definition of bandwidth...
I just though that there is somekind of feature in IE3D, that automatically could show the bandwidth value...
because I'd used another simulation software before IE3D that provide this feature, well at least it could give auto mark to fl and fh (lower and higher freq range)...
OK, back to reality, how I can add a mark/marker in the IE3D?
because from Modua I don't find those menu...
Thanx...