From: Sainath Nimmagadda ([email protected])
Date: Mon Mar 19 2001 - 12:27:38 PST
Dear Doug,
Assuming others also agree that we have much bandwidth available for
good purposes, why don't you post your explanation. If the beauty of
Maxwell's equations is in bringing out the unity (connectedness) of the
EM fields and constituent elements, I guess some one out there might
figure out if your explanation has anything to do with the path of least
inductance or not (which confirms your opinion).
Regards,
Sainath
Doug McKean wrote:
> Well, hello people.
>
> When discussing return paths and why they do what they do,
> I'm having a problem with the statement that - return paths
> at high freqs take the path of least inductance.
>
> I've actually drawn this out and don't understand where
> this came up when clearly the path of least inductance
> in most cases is not directly underneath the signal trace.
>
> Now, I have an explanation why the return path seeks to
> be under the signal trace. It has to do with the Lorentz
> force (the right hand rule using the Lorentz force to be
> exact) and the way negative charges move in the presence
> of a magnetic field. But it has nothing to do with the
> path of least inductance.
>
> The explanation is simple but, as usual, I can make rather
> lengthy. So, I can post it here or discuss off-line ...
>
> Regards, Doug McKean
>
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