Re: [SI-LIST] : skin effect

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From: Sunil Kumar (sunilb@cdotb.ernet.in)
Date: Sun Sep 03 2000 - 05:58:51 PDT


Doug

I have found that my view is shared by S. Kim and D.P.Neikirk of
University of Texas in their paper "Compact Equivalent Circuit Model for
the Skin Effect" In IEEE MTT-S Digest 1996. You can find this paper at the
following URL:

http://weewave.mer.utexas.edu/MED_files/MED_research/Intrcncts/Skin_Effect_Ldr
        /MTT_96_skn_ldr.html

Sunil Kumar
Research Engineer
ATM Group
Switching BII
C-DOT
Bangalore-560052
Karnataka
INDIA

On Sat, 2 Sep 2000, Doug wrote:

> GARY ROSEN wrote:
> >
> > Sunil Kumar wrote:
> >
> > > I would like to make one more point. In digital environment, an edge is
> > > made up of various frequency components, the highest is given by 0.35/rise
> > > time. Now higher the frequency, lower will be the skin depth, that means
> > > skin resistance will be higher. Hence skin effect acts like a low pass
> > > filter, rise time will increase. Any comments?
> > >
> > > Sunil
> > >
> >
> > Not taking into account transmission line effects (i. e. propagation
> > delay), I think this effect would be small if the trace resistance
> > is << line impedance. I'm not sure of the magnitude of the
> > transmission line effects, i. e. dispersion caused by varying
> > wave velocity over frequency.
>
> < nod >
> A "filter" would have to include at least one energy
> storing component and do a variety of phase adjustments.
> Resistance all by itself would affect only amplitude.
>
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