how to add an ideal power divider in HFSS?

[bingjiang99]

power spliter hfss

Dear all,

I am trying to design a good CP antenna with 90 deg phase shift. Therefore, it means I have to use two feedings. I want to know if there is a way to add an idea power divider/splitter in the HFSS?

Thanks a lot,

 

[bingjiang99]

HELP Re: how to add an ideal power divider in HFSS?

Dear all,

It seems there is no way to add an ideal power divider in HFSS. In order to design a CP antenna with reasonable AR bandwidth, I have to use two feedings. So I did it in this way
1) I put two driving source ports in the HFSS, and tune the antenna with a good bandwidth and Axial Ratio.
2) Then I export it to Designer and integrate it with a good power divider.
3) Simulate the whole circuit in Designer.

However, the simulated result is not what I expected. I thought the bandwidth should be identical, but it is not.

Do you have any ideas on this?

Thanks a lot,

 

[bingjiang99]

Does anyone have the experience to design a circularly polarized antenna with two feedings? Thanks,

 

[Songco]

How did you add the isolation resister in
HFSS?Thank you.

 

[bingjiang99]

You can add an object or surface, then assign it to be a lumped element. HFSS->boundary->assign->lumped RLC
Hope this helps.

How did you add the isolation resister in
HFSS?Thank you.

 

[Songco]

Thanks a lot.

 

[jeffb53]

Does anyone know if there is a way to model a coax power splitter in HFSS or is it easier to assign a lumped waveport to the 2 output ports?