HSS Port refinement Error

Port refinement, process hf3d error: Waveport s is internal to solution domain comes up when I try to analyze this design. Any suggested adjustments be made?

Welcome uknwn123,

Modify your bounding box such that the waveports are on its sides. As is, they are inside the domain, which is not a good idea.

Good Luck!

You might also try a metallic cap on the back of the port. If you are still having trouble examine the field in the plane of the port and make sure it is not detached. That is an occasional problem.