Unless this is a flex circuit, why would you cross hatch a plane? Lee Ritchey > [Original Message] > From: Shawn Arnold <shawn@xxxxxxxxxxxxxxxxxxxxxxxx> > To: <si-list@xxxxxxxxxxxxx> > Date: 4/2/2007 1:23:16 PM > Subject: [SI-LIST] Cross-hatched reference planes > > > > Hi All, > > Another crazy question. > > Previously when doing Consulting work for Intel, they had a calculator > for determining a copper cross-hatch pattern, trace width and > separation, used as a reference plane for controlled impedance > applications on thin core materials and low Er (polyimide) materials. > Does anyone know if such a calculator is available on the open Market or > if this is something they have shared publicly? > > Regards, > Shawn > > > ------------------------------------------------------------------ > 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