Good afternoon.Yes - that was the original question.

However, what has the OP shown to us? A graph with IMPEDANCE vs. frequency (and NOT inductance vs. frequency).

Therefore, I am not sure if the OP really has a frequency-dependent inductance in his mind.

I rather think, he needs a certain combination of an ideal inductance with some additional - also frequency-dependent - parts resulting in an impedance function as shown in the graph.

More than that: What is the meaning of " common mode behavior" of an inductor (see start of this thread) ?

As you may know, attenuation provided by a filter (as a inductor) can be divided in a common-mode and a differential-mode contribution. Common mode choke are designed in order to provide as much common mode attenuation as possible.

My idea is that, referring to the graph I shared, at such low frequencies only an inductive behaviour can be taken into account. Therefore my suspect is that such behaviour is associated to magnetic permeability of the core used to extract this Z vs. f measurement.

Speaking in general, my goal is to "reproduce" this part of the curve where the slope is variable. First idea is to search for any possible physical effect that can be responsible of that but, at the end of the day, any trick that allows me to reproduce the curve is welcome

Thanks for your replies.