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:Oj1uuh9RvrM50/9uRHKM819IXTAuvvDOBiVQ1KB81+8cTK2v8tzYMVDF4r011RmSDNydt60P0rKJ++C4ACpbsM7H6ChDOLV3FDY9wf0MmAIhBMPXQWbaF9XNKxIAIcJZSVV+9Gu6O0UGUOz3ZlnVv2HgpWVKQka3CwN5K6zPF5LIiIzvjqbpqsSVP1oD3WLiKfMqdVPt/F2X7pFXyaJZaY8JgiPTpXVJf+kEjUhJHnm02yjG28Gr4ZR4+D5Rsf9yv+RJUKH9YrhqBecAVGduDnoxrPHPmVGDCFHXpyhUbmJD2DdWCg6NwhbhRd+xvzXzsOR6wzKyMsj/TLRyUjOnru9YVh7hwCgKOzd87XrakOR8gaZcuhOs4Rd4xrueKNWaOfZ3O77GcMkySWdFWdxQWmpKBYbqPKUVCO9UGe9CtZi1i1wJqRqiGQ2hTLfrxjhPgn7qwYUg3u8wGgXLmggqG5QBt2qC/4a9D7sbTe3glPqA9j7Edf4DnG2l5Q== X-Ironport-SBRS: None X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: A2EBAgDac8ZX/52AA4BcHAaDKwEBAQEBHoFTgnmpF4w1ggGCZoIngRACgVA4FAEBAQEBAQEBAQEBAlsngjIEAxMFghEBAQQ6TwsYCRMHCw8FDTwTG4gRAxcFuhoNgz0BAQgCJYYwhE2CQ4Fjg0eCLwWIM4ZnigI0jF6CSI9hiD+ECYN5HjaCfoFVHDSFRYEnAQEB X-IronPort-AV: E=Sophos;i="5.30,260,1470726000"; d="scan'208";a="38837665" Date: Tue, 30 Aug 2016 23:10:12 -0700 From: Larry Doolittle To: "Evan Foss (evanfoss AT gmail DOT com) [via 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: <20160831061012.GA6882@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> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: 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 Precedence: bulk Evan - On Wed, Aug 31, 2016 at 04:26:05AM +0000, Evan Foss (evanfoss AT gmail DOT com) [via geda-user AT delorie DOT com] wrote: > On Wed, Aug 31, 2016 at 4:16 AM, Larry Doolittle > wrote: > > 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? Yes, some background. Urmel, Superfish, meep, S parameters, waveguides, series solutions. Worth pursuing, yes. I can't promise much time of my own. And I recommend trying to keep expectations low, at least at first. - Larry