You may want to look for a free program called RFSIM99 which is an 'S'
parameter analysis program using schematic entry. I find it useful,
although I haven't tried to load microstrip matching sections yet.

It is fairly intuitive, and I see the microstrip transmission component
looks to be reasonably comprehensive.

I particularly like the monte-carlo random component tolerance analysis.
It's helped me to make sure my designs will be easy to build and likely to
work.

I am sure Ansoft Designer SV is a more powerful program, but for most of
the things I do, RFSIM99 is nice.


Jim Pennell
N6BIU