Help for the port setting of a coplanar stripline(CPS)

[ptshao]

Hi, buddies:
How are you?
I got a problem about the port setting of a coplanar waveguide. See the attached file. I did not add any port over here since I have no idea how to set it. The impedance is supposed to be around 50 ohm. But I never got it, please take a look and add proper ports into this design. I appreciate you very much and hope you have nice day! (Delete suffix .pdf and you can open it in HFSS)

 

[aze]

Hi,

take a look here

good luck

 

[ptshao]

The problem is with the setting of the waveport. Keep it as big as possible.