X-Authentication-Warning:	delorie.com: mail set sender to geda-user-bounces using -f
X-Recipient:	geda-user AT delorie DOT com
X-Original-DKIM-Signature:	v=1; a=rsa-sha256; c=relaxed/relaxed;
	d=gmail.com; s=20161025;
	h=mime-version:references:in-reply-to:from:date:message-id:subject:to;
	bh=HZifNcuAC+L3RpRhzjKvSR01n0/R4clN38gA6SL7P84=;
	b=KNSX5t/Y2DTajG6EURWxFdVgJ2AWiLQlBYakau3xRHD0tftahmj+eKimoa89i69hgR
	DN1JI5XbpjH0CY7Se/LQA7yH88uDAP3UkyaHXIpdXg7lT5wdyBARko54l79dWnKu5M9B
	T3ZbhrWMjAhr8j5gyev3YTEd699obSjy+H6O2Jgtwy9JFC7RGn81vZ8+Bsapue1D8Umb
	ZL0TjrJ+4U12jdq89CklO+L9IeKrBwfh5ajGOqsBAxoDI8rmCxmuWYUCC9QRxruwfxLz
	BNmc2ZaBbP48x1f1HJ9OE1oveMkBtVy7ywMIahJ6VAv0XB4L/s1Nl2kXxVmbqMzU5/f8
	7oNQ==
X-Google-DKIM-Signature:	v=1; a=rsa-sha256; c=relaxed/relaxed;
	d=1e100.net; s=20161025;
	h=x-gm-message-state:mime-version:references:in-reply-to:from:date
	:message-id:subject:to;
	bh=HZifNcuAC+L3RpRhzjKvSR01n0/R4clN38gA6SL7P84=;
	b=sDfdTb9+qUs9e4ncp/1aPS+s2i3RfCxiWfhsx1MDA3i2/9t7YZW2GKyoXQ4m7buhH4
	KgCERBkVVodRBcv0a9iPgNmmGUQb5OzgrtGwpqTGqkE4fhbegQaZopqrsKoUkXI5YToU
	sjKDs97sLGD0/DelBwHQ1UIW4sPKthO5TQrKJtOfJv71lGq9Ej6syadFojTPEfnmiRNb
	Pbpec0QZsF8EzWknEgCqcpFll9YxkyavBw+S833h0UQt2pcGtqHTOZXgUtV3gONPAmQd
	Wnca+/tWdcQtO0zQQRdpeK67k/0uBQ9ujR56ep31Q+1lkqOroNee9VGdIT+YyG7K4ikZ
	n9dQ==
X-Gm-Message-State:	APjAAAVIm2uZKeLIXmWLeQwqxi2b159S3NPK6Lt8nEseMaeun5Y/waxD
	3BamuWOcchhwbsW5wiJJ/qp3rxM+mBzzwArdvdOhdQMb
X-Google-Smtp-Source:	APXvYqxjCkoqVXF2uKu4B1Sx6fSabfESkc4Vm8mF/bGPutGuZ0MNRW57uxmmxABPC2OPXvQ2swseN/9qurrLFpsVIaI=
X-Received:	by 2002:a5e:d70c:: with SMTP id v12mr8909986iom.284.1574373724666;
	Thu, 21 Nov 2019 14:02:04 -0800 (PST)
MIME-Version:	1.0
References:	<CAM2RGhT_pQZ8CGGM6ECwDUwJHeo3UwDJ6d_7RtVWhxJBQ=K1tA AT mail DOT gmail DOT com>
In-Reply-To:	<CAM2RGhT_pQZ8CGGM6ECwDUwJHeo3UwDJ6d_7RtVWhxJBQ=K1tA@mail.gmail.com>
From:	"Evan Foss (evanfoss AT gmail DOT com) [via geda-user AT delorie DOT com]" <geda-user AT delorie DOT com>
Date:	Thu, 21 Nov 2019 22:09:16 +0000
Message-ID:	<CAM2RGhT++rirvYwkNS+VCGqDBwrYu1WqEzY7m4ThYNNgF6fBHQ@mail.gmail.com>
Subject:	[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

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.
>

- Raw text -