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

"Leland C. Scott" wrote in
:

Is there a source for Puff 2.1 in the USA currently. I know it is no
longer avaiabe from Professor Dave Rutledge at Caltech Institute. I
don't want to buy the two the books

http://www.its.caltech.edu/%7Emmic/p.../puffform.html

that have included it just for the software.

Try http://www.gerstlauer.de/puff/

Sam

"Leland C. Scott" wrote in
:

Is there a source for Puff 2.1 in the USA currently. I know it is no
longer avaiabe from Professor Dave Rutledge at Caltech Institute. I
don't want to buy the two the books

http://www.its.caltech.edu/%7Emmic/p.../puffform.html

that have included it just for the software.

Try http://www.gerstlauer.de/puff/

Sam