From: Jack Olson (JackOlson@NVISION1.com)
Date: Tue Nov 09 1999 - 16:45:24 PST
Here is one article that might help:
The Effect of Vias on PCB Traces - by Doug Brooks
From: firstname.lastname@example.org [mailto:email@example.com]
Sent: Tuesday, November 09, 1999 3:50 PM
Subject: [SI-LIST] : Impedance calculator
Most of the impedance calculation softwares only calculate
impedance of straight line without through hole or via. But
a backplane, there are lots of through holes along with the
Obviously, these through holes will reduce the impedance of
Does any one know any tool or method which can calculate the
impedance of a line with vias?
ADLink Technology, Inc.
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