Waveguide Mode Coupler - which software to use?

Hi,

I'm designing a mode coupler that will couple the TE21 mode to four external rectabgular waveguides. If you know this structure you know that it's pretty big and it's time consuming to solve it in HFSS (which I have access to BTW).

So is there a better alternative out there? I have heard that some people swear by WASP NET and others like Mician.

I tried to contact MIG for a cost estimate and/or a eval version but got no answer?!

Is Mician easier to deal with?

What is approximate pricing and do these programs deliver acceptable solutions?

If someone has a demo version of WASP or Mician I would be interested to find out how they got it.

Thank you,
Magnus

reques:WASP-NET_V5.4.3

Mician or waspnet can do the job