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=20120113; h=mime-version:in-reply-to:references:from:date:message-id:subject:to; bh=XTXln7cNYDkauyxJaPtX/s4B4JzVO4RF6l/anO9nMo4=; b=CZOunVQsCxVhYJx/oHk1YoSg7Oekk5R2Van/V6aHa1rNo699Se1h9NKRPZw8Kpy6xT NrFxWO1sGXeDsR/5RESKk+TRbbMJzuMQHTYAczszkRrWd3msp434MhPzus9usZo9F/Ry Y14cD+S0p9B793gXODe9sRtlF9gyhVKrYfpZp1sAOPbV/yQHPG7NwOjVVOHhPU/wK2Cb PT9VZzYVkGAccC2Z6RPPHLNO4PiA/yqAJ8d9fxVDfiC4EIHF2wtKaaBN3c2TCt59jQa1 R85ikNplVSfQ7WZwFcQzS7NUcJVA/Ac1lO4/ofddK6nMm67Y49jXkRPcuFw0FSKYtPY0 jl2w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:mime-version:in-reply-to:references:from:date :message-id:subject:to; bh=XTXln7cNYDkauyxJaPtX/s4B4JzVO4RF6l/anO9nMo4=; b=mX71Eb92w0sm2mrRO8gba/DQLqb4oZP4yF9fqnUUHzayKWrh6WB0uOzq9bWXGQKqOc mMVaF7qyH3Y3oeiZvbq743nrYsTugFeZZu0ZztwuxoIuxK22vZCyPELIJukJ1lVY7v1V dCKwt+LlTFed7qBH14AuP6103r1ZzLOT3/E3uJBD/km7SXJhTxTnvVnjYs6zrssPgHj0 VarrapTfdPiXN/SqU4AERqBpCnCkrMWY/rLeN11wKP5YdVzn1TIpLtHvfktKjVy+UO3A ludG2CkMGyCO4neTXdBlTguuG76ACV2knf9/OiNqVPOdu7RfW+HuMi/CvcUl47jacJhE c4OQ== X-Gm-Message-State: AE9vXwNmMmWvSnh7OBzTq6eoZoKze4mfCIE+DBBLPY3EwjLsjCD7LP+nb8zaEYScvMJ7BA5qutHxtTu8Klj+gA== X-Received: by 10.25.16.92 with SMTP id f89mr2178188lfi.143.1472617566122; Tue, 30 Aug 2016 21:26:06 -0700 (PDT) MIME-Version: 1.0 In-Reply-To: <20160831041644.GA6695@recycle.lbl.gov> References: <57C09C3C DOT 7020708 AT xs4all DOT nl> <1802d6ac-d9d7-684e-ef8b-2061e2557bcf AT neurotica DOT com> <0f623d55-c654-88af-ca54-52bb385f51e0 AT neurotica DOT com> <20160831041644 DOT GA6695 AT recycle DOT lbl DOT gov> From: "Evan Foss (evanfoss AT gmail DOT com) [via geda-user AT delorie DOT com]" Date: Wed, 31 Aug 2016 04:26:05 +0000 Message-ID: Subject: Re: [geda-user] Microwave PCB layout simulation or How to eat all your processing power in 3 easy steps To: gEDA users mailing list Content-Type: text/plain; charset=UTF-8 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 Precedence: bulk On Wed, Aug 31, 2016 at 4:16 AM, Larry Doolittle wrote: > 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. Ok. Do you have a background with FEM and do you think it is worth pursuing? > - Larry -- Home http://evanfoss.googlepages.com/ Work http://forge.abcd.harvard.edu/gf/project/epl_engineering/wiki/ -----BEGIN PGP PUBLIC KEY BLOCK----- Version: GnuPG v2 mQENBFYy4RYBCAC183JomLtbdAlcKiaPDoVHq52LDmVmH75aiEc69m7YxDt54/ai VtYCAobbGVIyn3Hlz3uhF6LnPl/6Lm1VdnCfpwu3KQhCO6ds10ow2C30X4ohCqOd hCVg5C+ILmQkEffFrFODy3ji+PYTF4pADvHCWsTMv0hf0llwFOJsBCK6cl02IffE JPqy4PjM1nZ9HpzT84JBaG/4OGvTZ8SQ2yFUl265jagvygPTf88H1xpZHH1r8dB1 stjUHLmPH8AOyDgKxFchgGeDc3p/vJtgDDIXAFfDXG0NSRovLmtaQdGxe47Zf/go bXiEM7YL2WqQe5zfEA919JxkEwlDKYniOSVzABEBAAG0N0V2YW4gRm9zcyAoVGhp cyBpcyBteSBwdWJsaWMga2V5LikgPGV2YW5mb3NzQGdtYWlsLmNvbT6JATkEEwEC ACMFAlYy4RYCGwMHCwkIBwMCAQYVCAIJCgsEFgIDAQIeAQIXgAAKCRCIpQTcE8nN bbBaCACAm8pU5lG1ev2Fsw68Axtcl57SJrYieqX96c3YuYH9JpqMqJRnd9nDKw9X tQuvuH7tUk0VbOaDqReOYJVI/4c5wb9AaOFp6K2DUcupq6XhgXpvz3HzoPwjAdIj XuQzdRUx5+innTJrSkGuBYW/CZ2zqEx4xfLlq4rO0hoTUMR8QVp2cCrkw6BT0m86 APIw/ZnjoxM8IEzr7MxfRIg3qpzrZk28rmhx+k78Jyk61UhwcCPGIm/pjUopTwYJ 3YBdRB2cYD2aN7A1JVf5cRmSQYooHBGpH0kYvomGk97PKqypVuJ7OpG9xM58wUcC qUVt9hKlePLzP8csYjt8onqI7qIIuQENBFYy4RYBCADlH8spG3WkCx62vB5mr5Z0 SCDd/RcyA4A5y5EOj5KurQkrSWpgi9Ho1yKruMJ6blQR2qkc66KqH9pnXDm/ZI1M K/wdW3ngETxBmXoozzFMT89aEWIVR5/PFodWK1elekE9iJxACuR98Zg2QttTD3x8 A9w8VEyMLOXcDTrPFpHegMKswFBg5iuMulAdXAoGejWTI3n+qKFpabHm2Lfs6wjk 5rjucpTdeFK6UeWF1xAvNxXibuu5BlGwv53930qIXRwO/Gn2Rh5DXWxKU2fEIme/ xgQQmIsDeUoWbfybdjw/x7Q0LW4mINiLDQcGHHRQKFIxbAJCT3USPLGh5xwE9/Er ABEBAAGJAR8EGAECAAkFAlYy4RYCGwwACgkQiKUE3BPJzW0uYAf9Hf30n8tM3mR2 Zo6ESE0ivgdgjaJtAWrBUx7JzAzPjBnBOlNnu5Y9lVEqetvUPH6e3PvaHYUuaUU8 0HwxuKBW9nUprgV6uIu1DZmlcp+SxpbuCy7RDpNocRLNWWFMaYYzznmTgfnTgD4D gCq8Mf1mcfrluTkOAo+QNqbMfl1GISClopRqxVuAo59ewgMnFujwgd8w12BwWl24 CzqOs5HqcUslePj+LzcjSNgVCklYwKl+0dsb/fctMOCtHodwqm2CBJ+zydvNmYkD fxda/J91Z1xrah5ec++FL0L4vs+jCiIWJeupJFKlr1hCMZiiGH7W554loK5l4jv3 EY347EidAw== =Ta4p -----END PGP PUBLIC KEY BLOCK-----