- #1
EmilyRuck
- 136
- 6
Hello!
I have in my notes an expression for the sheet resistance of a uniform conductor with length [itex]L[/itex], width [itex]W = L[/itex] and thickness [itex]t[/itex]. It is
[itex]R_{\square} = \displaystyle \frac{\sqrt{\displaystyle \frac{\pi f \mu}{\sigma}}}{1 - e^{-t/\delta}} = \displaystyle \frac{1}{\sigma \delta} \frac{1}{1 - e^{-t/\delta}}[/itex]
where [itex]f[/itex] is the frequency of the signal, [itex]\mu[/itex] is the magnetic permeability, [itex]\sigma[/itex] is conductivity of the conductor and [itex]\delta[/itex] is its penetration depth.
This is given without any demonstration and it seems a standard expression. Do you know it or something similar? How can it be obtained?
If you don't have an answer, but you have some links or reference books, they will be useful as well!
Thank you anyway,
Emily
I have in my notes an expression for the sheet resistance of a uniform conductor with length [itex]L[/itex], width [itex]W = L[/itex] and thickness [itex]t[/itex]. It is
[itex]R_{\square} = \displaystyle \frac{\sqrt{\displaystyle \frac{\pi f \mu}{\sigma}}}{1 - e^{-t/\delta}} = \displaystyle \frac{1}{\sigma \delta} \frac{1}{1 - e^{-t/\delta}}[/itex]
where [itex]f[/itex] is the frequency of the signal, [itex]\mu[/itex] is the magnetic permeability, [itex]\sigma[/itex] is conductivity of the conductor and [itex]\delta[/itex] is its penetration depth.
This is given without any demonstration and it seems a standard expression. Do you know it or something similar? How can it be obtained?
If you don't have an answer, but you have some links or reference books, they will be useful as well!
Thank you anyway,
Emily