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	<CAM2RGhT++rirvYwkNS+VCGqDBwrYu1WqEzY7m4ThYNNgF6fBHQ AT mail DOT gmail DOT com> <31bdd536-fe1c-86fe-8edd-34de85a2e055 AT neurotica DOT com>
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From:	"Evan Foss (evanfoss AT gmail DOT com) [via geda-user AT delorie DOT com]" <geda-user AT delorie DOT com>
Date:	Thu, 28 Nov 2019 04:21:52 -0500
Message-ID:	<CAM2RGhQ=GqWB+jARLe6ZJTrdYxScTGf_gD6HSA2mHUHpNP2Fng@mail.gmail.com>
Subject:	Re: [geda-user] Re: Microwave PCB layout simulation or How to eat all
	your processing power in 3 easy steps
To:	gEDA users mailing list <geda-user AT delorie DOT com>
Reply-To:	geda-user AT delorie DOT com

Thanks Dave!

On Fri, Nov 22, 2019 at 11:44 AM Dave McGuire (mcguire AT neurotica DOT com)
[via geda-user AT delorie DOT com] <geda-user AT delorie DOT com> wrote:
>
>
>   This is amazing work!
>
>            -Dave
>
> On 11/21/19 5:09 PM, Evan Foss (evanfoss AT gmail DOT com) [via
> geda-user AT delorie DOT com] wrote:
> > Hi geda-user,
> >
> > It's been a while since this thread happened. I just wanted to point
> > out that we built it.
> >
> > Here is some documentation:
> > http://repo.hu/cgi-bin/pool.cgi?cmd=show&node=s_param
> > (i will write more later)
> >
> > Here is the official announcement:
> > http://repo.hu/cgi-bin/web_mail_arch.cgi?mlist=pcb-rnd&cmd=show&id=3539
> >
> > Some additional documentation will need to be written for things like
> > meshing, and more specific applications like signal integrity.
> >
> > -Evan
> >
> > On Fri, Aug 26, 2016 at 6:40 PM Evan Foss <evanfoss AT gmail DOT com> wrote:
> >>
> >> So a while back there was a thread titled "[geda-user] Wilkinson
> >> splitter - how to implement and use?"
> >>
> >> I *hated* that we didn't have a good answer for that. I spent a lot of
> >> time looking at FEM (finite element modeling). There are a lot of open
> >> source FEM solvers that are open source. Too many really because
> >> people keep writing new ones to full fill phd thesis requirements.
> >>
> >> The FEM we care about is called FDTD (finite-difference time-domain)
> >> aka Yee's method. I made a list of all of them. Removed the ones that
> >> are not maintained. Weighted them based on how close to our intended
> >> use case the projects were and bumped down ones that were basically
> >> only used by the universities who wrote them. It left 2 options. I
> >> really favor OpenEMS for a number of reasons. For one MEEP doesn't
> >> seem to have any kind of email list or forum and OpenEMS does. For
> >> another MEEP seems to mostly be used by people who are doing things
> >> like designing CCDs and other optics (hey John Dotty ever used this?).
> >> OpenEMS is mostly used by RF people and has examples done that use PCB
> >> layout.
> >>
> >> To see what I am excited about
> >> http://openems.de/index.php/Tutorial:_Microstrip_Notch_Filter
> >> http://openems.de/index.php/Tutorial:_Importing_with_hyp2mat#Calculating_the_step_response
> >>
> >> OpenEMS
> >> http://openems.de/start/index.php
> >>
> >> MEEP
> >> http://ab-initio.mit.edu/wiki/index.php/Meep
> >>
> >> PS: I looked for a Method Of Moments (mom) solver and there don't
> >> appear to be any which are open source and actively
> >> developed/maintained. NEC2 is nice but it is just free as in beer.
> >>
>
>
> --
> Dave McGuire, AK4HZ
> New Kensington, PA



-- 
https://github.com/evanfoss

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