How to do so many things in ADS

Hello Everybody
I am to determine the impedence of a microstrip parallel to a groundplane.
and also to see the effect of changing substrate material,depth,separation distance of these two and so on on the characteristics impedence. and also to calculate the capacitance b/w microstrip and the plan as well as microstrip and the bottom conductor of the microstrip(as defined in its structure). can anyone help me how can i do it?
can i change the bottom conductor mentioned above? and is it possible in both layout and schematic?
thanks for holding patience such a long time. i am waiting for replies.
Regards :-
Manjil

Perhaps the "LineCalc" utility will help
http://www.valagiannopoulos.gr/Wavel...ostripLine.pdf

+1 for line calc

Or you can just start a new project.
Select TLines-Microstrip
Select the MSUB for your microstrip substrate
- Define all your parameters
Select the type of line configuration (scroll down to MLIN)
- Define parameters

And your good.

Thanks to you both for ur suggestions.
I have done these both things but not enough.
In line calc, we can change the material properties but how to change the bottom conductor? and the Z(not) defined there is characterstic impedence or intrinsic impedence? other problem is how to determine capacitance b/w microstrip and the bottom conductor? In ADS, how can we check input impedence while a voltage is applied on input because in this case, all s-param become changed? please send me something more on these probllems. and thanks for the document dear.