Hello,

sometimes, people mat get such warning during running operation of program. there are few reasons behind that, such as:-

1)Mesh cells, for more accuracy defined more number of cells.

2)Port orientation, having waveguide port especially

3)Selecting faces or edges while deciding port 1 or 2 or both.

4)outer structure, or most outer structure thickness (generally radius).

Thanks,

Hi,

First, thanks for your precise answer.

But about the second and third one, I don't define my ports, because my structure is a periodic one and it is chosen floquet port automatically. And what do you mean by "outer structures", I don't understand exactly?! Do you have any example in CST for that? And for the first answer, do you mean I should reduce the number of cells, or?

Thank you,

Hello,

1) for first one, you will have to increase the number of cells.

2) for outer structure, means sometime like as waveguide, we define one more structure of radius greater than the most outer structure( cylindrical waveguide for example).

3)for periodic boundaries, phase should be well defined as well as magnetic and electric field behavior.

I will send you one solution which is given in that software.

Thanks,

I tested your solutions but nonetheless there is still the warning!

Good day, Smrity Dwivedi

Why would CST give those warnings if I define the ports via picked faces?

Kind regards,

Hello, I have encountered the same problem as you. Can you tell me how you resolved it.