Hi everyone I have design a 2x14 array by using HFSS 3D module and then exported the designed as dxf format and imported it in HFSS layout. When I compare both results they are very much different. The graphs are attached. In HFSS 3D module I have used terminal port for excitation while in layout I have used edge port , the radiation boundary conditions have been used in both. My question, what could be possible reason of this difference. which module 3D or layout gives more accurate results
The dips are almost certainly due to resonant distances. Work out which distances correspond to which dips, if you can. It may be that in 3D the reflection from a component is slightly bigger than in layout and ends up with a resonance because it is periodic. Or something else may be radiating, as well as the patches. Does layout do radiation from ordinary microstrip?
I'm answering this from the general troubleshooting viewpoint as I am not an HFSS user.
Thank you Malcolm White , you might be right about the bigger reflection for 3D components. I have called HFSS setup in layout tool, and obtained the results in layout tool for HFSS setup and setup. This time design settings are completely same. Even though you are not HFSS and still you reply. I hıghly appreciated it.
I have tried the result in cst, the results are more resembles to planerEM
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