Stacking antenna with cst

Hello
I need to stack two helical antennas in cst
because antennas are in uhf range these are wide around 2 wavelength and I used Integral equation solver

Now in order to stack two of these antennas how to set the excitation port correctly to get a single farfield?

file is attached

Thanks

Helix antenna is not well calculated ... !

what do you mean?
I've developed and tested several helix antennas for various frequencies and all are gone well...

In integral equation solver I want to find the possibility to feed simultaneously the two helix (I tried but I got two different farfields instead of one...)

,,,I don't think so...!

,,,for Array Antenna...

This should work
Thanks!

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