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Inductance calculation for Helical coils

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nvt088

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I want to calculate inductance of helical coils in HFSS.

I have two kinds of helical coils: Open end and short end as showed in the picture.

In helical coils, we need to take into account stray capacitance. So Z= j(wL-1/(wC)).

These coils are self-resonance, so having self-inductance and self-capacitance.

So, we can not rely on formula: L=Im(Z(1,1))/(2*pi*Freq)

Anyone can help me calculate L and C, separately, in HFSS? Many thanks

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