I am having trouble setting up this problem in HFSS or FEKO. In HFSS, I've tried both FEM and FEBI-IE solvers. With FEKO, I've tried it's MoM solver and default settings. I am would like model model two horn antennas, one in transmit mode and other in receive mode, with a dielectric slab of material in between them. After running the simulations, I'd like to export the s-parameters to apply a material retrieval algorithm like Nicolson-Ross-Weir (NRW) or Newton Raphson to get the permittivity & permeability properties of the dielectric slab.
Link to a paper describing what I'm trying to achieve is below but it was done using CST:
Conference Paper Free Space Measurement Technique on Dielectric Properties of...
I have simulated horns in the far-field before using FEBI boundaries on HFSS and the results were good compared to Friis equation. The thing about FEBI is that it's sensitive to the size of the region around the horns and the dielectric. Ansys advises to use a conformal air region with a spacing of lambda/10 around the objects (see white paper attached). If your results don't make sense you can try playing with the size of the region(s).
Hello,
According to your question, I have gone through some papers which I am attaching with it. Kindly go through it, It might be helpful for research.
Thanks,
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