On Sun, Jun 25, 2023 at 02:55 PM, Brian Beezley wrote:
Mike, measure the inductance and series resistance at the model frequency. I
believe recent VNA firmware versions can provide these values directly.
Otherwise calculate them from R and X.
The VNA can only measure R + jX or R//jX (with later firmware versions). It calculates inductance by dividing X by 2*pi*frequency and this ONLY gives an estimate of the true coil L if the coil is air wound and the frequency is low enough that the skin effect is not having much effect on underlying inductance. If the coil is wound on a ferrite core you can't use this method to estimate L at higher frequencies.
Roger
Roger Need