basic Wilkinson power divider question

Hi
I am simulating a wilkinson power divider to combine 2 signals on ADS.
But the phase I am getting for a bandwidth around 5GHz varies linearly from 80 to 100 degrees and I though the phase response was supposed to be flat.
How do I flatten this phase? Or should I use a different configuration?
any suggestions appreciated

Figured out problem
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I think the results u have are appropriate, Provided u r not looking for a wide band power divider. Ur designs results are for particular frequency..

5GHz is ur center freq or band width ?

You can add some phse shifter circuit to each branch.

if the phase balance is flat, that is true. this phase(phase(s21)) is for 90deg, 70 Ohm line.