Permeability of copper in the microwave frequency range

[AlexVI]

Relative DC permeability of copper is 1. Conductors are considered dispersive and therefore the permeability should change with frequency. Where can I find data or how can I calculate permeability of copper in Ghz frequency range?

 

[Paul Colby]

This looks to be an interesting read that covers some simple classical models.

http://emlab.utep.edu/ee5390em21/Lecture%202%20--%20Lorentz%20and%20Drude%20models.pdf

 

[AlexVI]

When I was doing google search before the post I saw this one too. It was a long time ago when I studied electrodynamics but if I remember correctly there is a problem with using Drude model for diamagnetics because of Kramers - Kroning relations.

 

[Paul Colby]

Well, okay. My take on this is in the GHz range not much is going on in the permeability of copper just based on the general physics outlined in the linked pdf. I don't expect the field to extend into the copper much more than a skin depth. Do you expect answers from a more detailed model will be significant and if so, how so?