microstrip matching system

hi all..
i want to design a matching system by using microstrip..
the idea is zin=50 ohm and zl=75 ohm for example..
first try is by using open series single stub..
then i want to using a double stub but not really understand about how to draw the double stub smith chart..
second idea is by using taper or balun..
anyone have idea where i can study to design a microstrip taper or balun..
and simulate them using cst..
sorry for poor english..
thank you.

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For the first two options, I would recommend using Fritz Dellsberger free Smith chart program. It's quite user friendly. You can draw a schematic with stubs, caps, inductors, etc. and clearly see how to move from one point on Smith chart to another.

http://fritz.dellsperger.net/