who can give me the soft or advice about cpw and cps?

rencently i read article about balun,but i meet the problem ,i dont know
how to calculate the character impedance of the cpw and cps!
who can give me some advice?

i do not know exactly what you want.
but if you dl TXline freely from awr website,
then you can calculate by yourself.

http://www.appwave.com/src/products/TXLine.zip