Sunil, A simple example of how an electromagnetic solver can be used to investigate the effect of a slot or split in a reference plane is provided at http://www.simberian.com/AppNotes.php - see the topmost app note. Best regards, Yuriy Yuriy Shlepnev Simberian Inc. www.simberian.com -----Original Message----- From: si-list-bounce@xxxxxxxxxxxxx [mailto:si-list-bounce@xxxxxxxxxxxxx] On Behalf Of sunil bharadwaz Sent: Sunday, November 18, 2007 1:26 AM To: SI LIST Subject: [SI-LIST] Signal crossing Split plane Hi , I have few signals (@ 80 Mhz & 20 Mhz) crossing the split Power plane in the adjacent layer. The 20 Mhz signal is diffrerential signal.The 80 Mhz is a single ended signal. I want to analyse the affect on Signal Integrity of these two signals due to split plane. I believe one need to define his stack up (Including the split) & then extract the layout to simulate. I'am not too sure if the prevalent SI tools have an option of creating split planes . Pls suggest me a right tool to carry out this.Also , i'am looking for a free tool to start with (even if the accuracy is slightly limited). Thanks in Advance!! Regards Sunil.Bh --------------------------------- Be a better pen pal. Text or chat with friends inside Yahoo! Mail. See how. ------------------------------------------------------------------ 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