Problem about excitation in HFSS

I know how to excite wave port and lump port .But when we assign current or voltage there is a problem. After simulation ,option of gain in radiation pattern is not present. So in which unit i see the pattern of 2D and 3D polar plot.

I have a similar problem. I try to compose a rectangular transmission line in that file by HFSS v10, I cant add a waveport for excitation so I cant get results while simulating. Is there anybody who can tell the problem?Or how I can add the waveport?

You should cut the inner conductor cross face out. then define the wave port.

Hi,
You can check whether the boundary conditions are right.