[SI-LIST] Re: Variations in TDR from Via Tuning

  • From: Bill * <cerberos@xxxxxxxxx>
  • To: janton@xxxxxxxxxxxxx
  • Date: Wed, 8 Jun 2005 14:59:46 -0700

Jim-
we are the source of the image: Interconnect Technologies
Regards
Bill=20




On 6/8/05, Jim Antonellis <janton@xxxxxxxxxxxxx> wrote:
>=20
> Hello,
>=20
> I have a jpeg image showing the difference in TDR profiles
> between a standard through hole via, pads removed, backdrilled
> and pad/antipad tuning. A small color diagram showing the
> PCB and via cross sections is also in the figure.
>=20
> I consider it qualitative and not absolutely quantitative
> (regardless of axis units being present) given that more
> of the analysis details are missing; none-the-less, it is
> a very good visual to convey the overall theme.
>=20
> I would like to use this image and as such I am trying to
> locate the source but my attempts to do so via (no pun intended)
> google have been in vain. Does anyone recognize, from my
> desription, this jpeg image, and most importantly know of it's
> source?
>=20
> I will upload the jpeg to the download area as soon as I figure
> out how to do so (feel free to send me the instructions as I did
> not see them on the page http://www.si-list.org)
>=20
> Regards,
> Jim
>=20
>=20
>=20
> -
> Jim Antonellis   janton@xxxxxxxxxxxxx
> Sandburst Corp   www.sandburst.com
> Office: 978.689.1669
> Cell: 978.618.4745
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