Discrete Port for Antenna Design in CST

[antennawupi]

Plz can anyone help me for my Problem. I have a design of a microstrip line from Ansys HFSS and i did import it to cst studio and i want to define the ports in cst studio with the discrete port between 50-450 Ghz to get the S-parameters at the end. And i see that i get wrong results for the S11 and S21, i dont know why because I already used the wave guide-port and that was also wrong. here below are some photos

 

[sguler]

Is this a microstrip line? Then, I can't see your substrate, can it be an issue?

Also, in CST documentation, it says that the design of waveguide ports can be tricky for microstrip lines? Did you check the documentation to start with? https://space.mit.edu/RADIO/CST_onl...l_overview/special_overview_waveguideover.htm

 

[KACHILIVE]

You say you are using a waveguide port but your result image shows discrete ports. Can you share more information if you are still looking for help?

 

[volker@muehlhaus]

Have you tried adding some distance between DUT and simulation boundary?