circular waveguide excitation

[llchuan]

hi
im quite new to hfss and got a few questions here
how can i excite a tm01 mode in a circular waveguide using hfss?
I have tried setting both ends to waveport but Im not sure of what to do next
can anyone pls enlighten me?

 

[navuho]

HI llchuan

It's easy Just you need to define the proper boundary conditions.
For the TM01 mode - it's a 3D-sector with two H-plains.

 

[llchuan]

hey thanks for the reply
do you mean setting the boundary to perfect h?
can you post a sample for me to refer to?