T power divider port excitation?

I ve designed a T power divider 1 to 4 and im simulating it in Ansoft Designer planar EM design.

Can anyone help me out in assigning the port excitations? I cant figure out whether to give same excitations at all the five ports or give only excitation at one port ?


----------port2
-------
- ----------port3
port1 ----------------------
- ----------port4
--------
----------port5