I have designed reflectarray element to generate OAM beams at 5.8GHz and feeding it though Horn Antenna on HFSS. After full wave simulation, i am not getting desired results i.e Radiation pattern and Gain (2D+3D). Might be its only giving results of feeding Horn. If anyone can point out mistake at my end. I am attaching screenshot of designed element and results.
Where are your boundaries? HFSS calculates the pattern using the power that crosses radiation boundaries. If the radiation boundary is only surrounding the horn then the pattern will be that of the horn only.
@Mohamed K. Emara
I have used Air boxes on element aswell as horn for radiation boundary and excited it through wave port of horn. But results are appearing for Horn only
It seems HFSS doesn't recognise the reflect array. You can try a simulation where you surround the entire structure by an air box with radiation boundaries. The downside is that it could be a long and heavy simulation.
Mohamed K. Emara It took much time in simulation but got blank results with below errors.
Yes I think it failed because it was taking too long. Next you can try simulating with FEBI boundaries. This video explains it well: https://youtu.be/qRQmX3m0fBY
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