Re: [SI-LIST] : Question on propogation of high freq. signal in conductors

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From: Michael Nudelman (mnudelman@tellium.com)
Date: Tue Sep 19 2000 - 07:22:27 PDT


Skin-effect. This is a result of the magnetic field, created by an
alternating current. Any alt. current will produce skin-effect, but the
penetration depth will increase with period. As a result, a current of
very high frequency concentrates in a very thin outer layer of the
conductor, thus meeting increase losses. It is fought by using better
conductros as platings to the main conductor, or widening the conductor
itself.

prasanna kumar wrote:

> Hi,
> i have a small doubt.
> in high frequencies why does the signal is confined
> only to the surface of the conductor?
> ie,(if i am putting it right)why does the current
> flows only at the surface of the conductor?
> thanks.
> Prasanna.
>
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