suspended line design

Hi all

Im doing on triplexer on suspende line (see attached pic.)
I use different height of suspension due to different transmision line and I need wider line due to power handling
could you recommend the right tool with elements regarding suspended line.

thanks
v.

HFSS can easily cope with this structure. It is expensive and takes a while to learn to operate.

Polar's Si9000 impedance calculator may also be useful at a much lower price , and it is less flexible.

You might get lucky and find something on the web that just suits your problem for free.

Think of it this way: Good. Fast. Cheap. Pick (only) two.