Wilkinson splitter output phase

Hi,

I´m trying to understand how it works a RF design, and I have some doubts about phase diference between the input and both outputs. I think that for a two-port Wilkinson, the diference is 180º between input and outputs (0º between outputs), but I´m not sure if this figure is the same for a multistage (3) Wilkinson.

Could you help me?

I think the phase difference between input and each output should be 90 degrees because there is just a quarter wave transmission line between them
In multistage Wilkinson you should consider 90 degree phase delay for each Wilkinson