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Re: gEDA-user: trace calculation[Scanned]

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Subject: Re: gEDA-user: trace calculation[Scanned]
From: Dan McMahill <dan@xxxxxxxxxxxx>
Date: Thu, 05 Jan 2006 17:06:43 -0500
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Robert Thorpe wrote:

Microvias in particular are thin and have significant inductive reactance at high frequencies. Normal vias are not so bad.


you can minimize the effect of a via by nominally matching it to the
trace.  In other words by varying the via diameter you have a handle on
its impedance and there usually is an optimum value.  Brian Wadell's
book gives some details on this.

-Dan

References:
- RE: gEDA-user: trace calculation[Scanned]
  - From: Robert Thorpe

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