Feeding a rectangular wavegude with two pins

hey there,

I built in hfss a rectangular wave guide and two pins that should feed him.
I wish that the waveguide will only let TE20 mode to propogate.

How can i make it?
which kind of ports should i use?

thanks a lot!

You can probably excite two coaxial modes on the pins (one on each).

In HFSS, lumped ports should be OK.