Hello,
Do you know of a free program that can simulate a circular waveguide? I need it to analyze the field distribution in the waveguide and hopefully to design a coax to circular waveguide transition.
I'm not very interested in demos, because those are hard to get and limited to 30 days or less. I would prefer a free software,even if it is harder to use.
I tried emGine, but it only works for rectangular waveguides. Meep seems to work for any structure, but I couldn't find examples specific to RF&MW design, most of the examples available are for physics research.