delorie.com/archives/browse.cgi   search  
Mail Archives: geda-user/2016/08/31/00:18:21

X-Authentication-Warning: delorie.com: mail set sender to geda-user-bounces using -f
X-Recipient: geda-user AT delorie DOT com
IronPort-PHdr: 9a23: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
X-Ironport-SBRS: None
X-IronPort-Anti-Spam-Filtered: true
X-IronPort-Anti-Spam-Result: A2FAAgCxWMZX/52AA4BcHAEFARgGgwwBAQEBAR6BU4J5ijaeYYw2ggGCZoIngRACgVw4FAEBAQEBAQEBAQEBAlsngjIEAxMFghEBAQQ6TwsYCRMHCw8FDTwTiCoDFwW6DQ2DPQEBCAIBJIYuhE2CQ4Fjg0eCLwWIM4ZnigI0jF6CSI9hiD+ECYN5HjaCfYFVHDSFRYEnAQEB
X-IronPort-AV: E=Sophos;i="5.30,260,1470726000";
d="scan'208";a="38833620"
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>
References: <CAM2RGhT_pQZ8CGGM6ECwDUwJHeo3UwDJ6d_7RtVWhxJBQ=K1tA AT mail DOT gmail DOT com>
<57C09C3C DOT 7020708 AT xs4all DOT nl>
<CAM2RGhRST_sQQR8O9-Ti1=XytAxTFhxAV5MtMuvaq9OUwSRC=A AT mail DOT gmail DOT com>
<1802d6ac-d9d7-684e-ef8b-2061e2557bcf AT neurotica DOT com>
<CAM2RGhQVjz6dY2WN+7kFXTbpKTNrM5MFG03YpVYsLNGGYKRFRw AT mail DOT gmail DOT com>
<0f623d55-c654-88af-ca54-52bb385f51e0 AT neurotica DOT com>
MIME-Version: 1.0
In-Reply-To: <0f623d55-c654-88af-ca54-52bb385f51e0@neurotica.com>
User-Agent: Mutt/1.5.21 (2010-09-15)
Reply-To: geda-user AT delorie DOT com
Errors-To: nobody AT delorie DOT com
X-Mailing-List: geda-user AT delorie DOT com
X-Unsubscribes-To: listserv AT delorie DOT com

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

- Raw text -


  webmaster     delorie software   privacy  
  Copyright © 2019   by DJ Delorie     Updated Jul 2019