get_antenna_data()

[georgmichel]

Hi,

did somebody get get_antenna_data() to work? I tried severals examples from the docs with 25R1 with no success. AEDT throws a lot of errors. My code so far is:

ffdata = app.get_antenna_data(frequencies=2.45e9, setup="Setup1 : LastAdaptive", sphere="3D", variations=None, overwrite=True, link_to_hfss=True, export_touchstone=False)

The most prominent error is probably "raise Exception("Wrong farfield file load").

Thanks for your answer.

[Samuelopez-ansys]

Hi @georgmichel , could you please share the project?

This example is working:
https://examples.aedt.docs.pyansys.com/version/dev/examples/high_frequency/antenna/array.html

Please check you do not have variations before calling the method:

variations = app.available_variations.get_independent_nominal_values()

Finally, I guess the freq units of your AEDT is not Hz, if your AEDT units are GHz, then you must pass the frequency in AEDT units. You could also get the available frequencies beforehand (the method is doing it internally if the user does not pass any freq)

from ansys.aedt.core.generic.numbers import Quantity
trace_name = "mag(rETheta)"
farfield_data = app.post.get_far_field_data(expressions=trace_name, setup_sweep_name=setup, domain=sphere)
if farfield_data and getattr(farfield_data, "primary_sweep_values", None) is not None:
    frequencies = [
        Quantity(i, farfield_data.units_sweeps["Freq"]) for i in farfield_data.primary_sweep_values
    ]

[georgmichel]

Hi Samuel,

thanks for your swift answer. I tried again with a generic project from the ACT wizard where it works correctly. Obviously I need to check my project. It has a valid farfield solution, but for some reason it doesn't work. Maybe it's the problem with the variations.

Thanks again
Georg

[Samuelopez-ansys]

I found an small bug that maybe is the main root cause of your issue. If you have a dependent parameter like x = y + 2 in your HFSS design, it was not considered in the method.

I think I fixed it here:

https://github.com/ansys/pyaedt/pull/6115/files#diff-2c60efffed3cd37b656c7b83131173a4d8eade409e3fd0dc96ccdae196fa71cb

I tried with a simpler antenna without parameters, and the method was working fine.

[georgmichel]

Excellent, this was the problem. There were some dependent variables in my project. I've rarely seen such a quick bug fix. Thanks for that.

[Samuelopez-ansys]

Welcome to the PyAEDT universe :)

[georgmichel]

It was indeed my very first try on PyAEDT and I am delightfully surprised.