Chris, I can run a quick SONNET sim for you to show what happens with sharp 90 degree corners and with chamfered corners. The sharp corners add some capacitance and lower the Z0. For anything that I have done this effect was almost negligible. Howard Johnson's book has a section on this, I think. Dave Cuthbert On Fri, Aug 8, 2008 at 12:11 PM, <Chris.McGrath@xxxxxxxx> wrote: > I used to have a copy of a public paper that debunked the myth that stated > the evils of using 90 degree corners when routing PCB traces. I can't > seem to find it on the web, so I'm hoping that one of you may either have > a copy of it or can point me to the link. Feel free to email me directly > with the attachment since the SI List server will block it. > Thanks! > Chris > > > ------------------------------------------------------- > Chris McGrath > Applications Engineer > chris.mcgrath@xxxxxxxx > Office: 480.704.7061 > Blackberry: 480.747.3848 > www.smsc.com > ------------------------------------------------------- > > > > ------------------------------------------------------------------ > To unsubscribe from si-list: > si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field > > or to administer your membership from a web page, go to: > //www.freelists.org/webpage/si-list > > For help: > si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field > > > List technical documents are available at: > http://www.si-list.net > > List archives are viewable at: > //www.freelists.org/archives/si-list > or at our remote archives: > http://groups.yahoo.com/group/si-list/messages > Old (prior to June 6, 2001) list archives are viewable at: > http://www.qsl.net/wb6tpu > > > ------------------------------------------------------------------ To unsubscribe from si-list: si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field or to administer your membership from a web page, go to: //www.freelists.org/webpage/si-list For help: si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field List technical documents are available at: http://www.si-list.net List archives are viewable at: //www.freelists.org/archives/si-list or at our remote archives: http://groups.yahoo.com/group/si-list/messages Old (prior to June 6, 2001) list archives are viewable at: http://www.qsl.net/wb6tpu