relation between microstrip line and board thickness

Hi ��
Excuse me
I want to know the relationship between minimum microstrip line thickness and board(ro4350) thickness based on amplifier power?formula!

The current will determine the minimum line thickness. Here's where you can get the board thickness:http://emclab.mst.edu/pcbtlc2/

Amplifier power has nothing to do with it.

Hi
Once my teacher told me there is a software in Rogers website when you give it some parameters it gives you others.but now I can't find the software.��

use this link

http://www1.sphere.ne.jp/i-lab/ilab/tool/ms_line_e.htm