RE: Simulation Question

Hi,

I was simulating using C*S*T software and I encounter a message saying
"inhomogenous material at PML boundary detected"

Could I know what does that mean and how about do I go about solving it?

Thanks.

Does this happen when you use Transient solver? If yes, you should use Frequency Domain solver.

That means you have at least two different materials on the boundary, to which your boundary condition is open. I guess you might try to set "open" boundary to "open (add space)" from Solve->Boundary Condition. Or you could add your self some additional space to the model through Solve->Background Material-> [type the amount of additional space to the appropriate place (one of xmin,xmax,ymin, etc...)]

Regards,

Markus