wilkinson dividers calc

in wilkinson power divider what is the formula used foe calculating the lengh and width of transmission line1,transmission line 2,and transmission line3

The feeding line could have any length more than 90 degree impedence is Zo, the divided lines have length of 90 degrees with impedence of sqrt2*Zo.

ok i explain
Widths can be calculated by using any line calculator like LINECALC form agilent or txline from AWR. Else tell the substrate i can calculate it for you. If your system impedence is 50 that is Zo, Then then the two divided lines have width according to 1.41 Zo ie 70.5ohm impedence each.