Thanks edf for your reply.
I did not understand fully what you ment by "make sure your TLines are 90 deg" do you mean the connection between the input port and the first section ? if yes. I also designed other model for the power divider and cot similar insertion loss. please check the attached pic.
https://obrazki.elektroda.pl/4796521300_1433959012.jpg
If possible ... could you explain in more details how to do real time variable tuning for the characteristic impedance ? ( do you mean parameter sweep ? )
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thanks edf for you reply.
I did not fully understand what you do you mean by "make sure your TLines are 90 deg" ... do you mean that the between the input port and the fist stage ? if yes .. I designed other power divider which is in the bellow link:
https://obrazki.elektroda.pl/4729552600_1433960880.jpg
and got the similar issue with insertion loss.
beside that could you please explain how to do the real time variable tuning for the characteristic impedance with CST ?
or you mean the parameter sweep ?