Design of T junction power divider

dear all,

i need your suggestion on how to design a power divider for an antenna array.

After calculating the dimension of the trans. line, it is smaller than the antenna configuration.

So, I cant draw it bcoz its so small. Can I extend the line so that it can be connected to all the antenna?

What would be the suitable length for extension?

Parameters
Rectangular ant 15 mm by 12 mm

array size 2 by 2

feed length 3 mm by 12 mm

Transmission lines are 7mm length and 3 mm width?

Pls guide me thank you