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Date: Tue, 30 Aug 2016 21:16:44 -0700
From: Larry Doolittle <ldoolitt AT recycle DOT lbl DOT gov>
To: "Dave McGuire (mcguire AT neurotica DOT com) [via geda-user AT delorie DOT com]" <geda-user AT delorie DOT com>
Subject: Re: [geda-user] Microwave PCB layout simulation or How to eat all
 your processing power in 3 easy steps
Message-ID: <20160831041644.GA6695@recycle.lbl.gov>
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Evan -

On Tue, Aug 30, 2016 at 11:42:13PM -0400, Dave McGuire (mcguire AT neurotica DOT com) [via geda-user AT delorie DOT com] wrote:
> On 08/30/2016 11:23 PM, Evan Foss (evanfoss AT gmail DOT com) [via
> geda-user AT delorie DOT com] wrote:
> >>> I was hoping for some wisdom from the crowd too. I am not a microwave
> >>> dark artist and we have a resident phd in physics who might have a
> >>> thing or two to say.
> >>>
> >>> Igor2 and I were talking about it last night. We got really excited
> >>> about FEM solvers but does anyone here really want / have the ability
> >>> to use this?
> >>
> >>   I'd sure as heck use it!  I think it'd open this up to a whole
> >> different world of PCB users.  I think it'd be huge.
> > Ok. What are your use cases for it? You and John are the only two
> > people who responded.
>   Filters and antennas, primarily.

Crosstalk, VSWR of microwave circuits and high-speed serial routing.
They are hard problems.  Even with ideal software, getting good data on
a PCB process can be tough.  Lots of people make test boards for their own use,
and then hope (and check) that the manufacturer doesn't change the process.

  - Larry