Shall I normalize the waveport impedance to 50 Ohm when simulating a waveguide?

Hi all,

Could anyone tell me shall I normalize the waveport impedance to 50 Ohm when simulating a waveguide structure in HFSS? And why? Thanks in advance.

I do not know your simulation but waveguides other than coaxial have other characteristic impedance than 50 Ohms. If you insert a coaxial-to-waveguide transition, the problem is solved in real situation.