Dave At best this is not a good practice. An ANSOFT simulation will give you a good approximation of the degradation. I understand there are several design houses which provide this service as the software is very expensive. Best regards Lee JLP Consultants LLC 804 779 3389 ----- Original Message ----- From: "David Baldwin" <[log in to unmask]> To: <[log in to unmask]> Sent: Monday, November 24, 2008 9:35 AM Subject: [TN] Stripline Traces and Plane Splits > Fellow Designers: > > I am designing a board with differential pairing in a stripline > configuration. One the bottom side is a solid ground plane. On the > top side is a split power plane. > > I was told that running traces across the splits is not a significant > problem as there is a solid ground plane on the other side for the > return currents to flow. > > Do you agree with this assessment and what has your personal > experience told you. > > Thanks in advance for your opinions and response. > > David Baldwin CID+ > > --------------------------------------------------- > Technet Mail List provided as a service by IPC using LISTSERV 15.0 > To unsubscribe, send a message to [log in to unmask] with following text in > the BODY (NOT the subject field): SIGNOFF Technet > To temporarily halt or (re-start) delivery of Technet send e-mail to > [log in to unmask]: SET Technet NOMAIL or (MAIL) > To receive ONE mailing per day of all the posts: send e-mail to > [log in to unmask]: SET Technet Digest > Search the archives of previous posts at: http://listserv.ipc.org/archives > Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 > for additional information, or contact Keach Sasamori at [log in to unmask] or > 847-615-7100 ext.2815 > ----------------------------------------------------- > --------------------------------------------------- Technet Mail List provided as a service by IPC using LISTSERV 15.0 To unsubscribe, send a message to [log in to unmask] with following text in the BODY (NOT the subject field): SIGNOFF Technet To temporarily halt or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL) To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest Search the archives of previous posts at: http://listserv.ipc.org/archives Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815 -----------------------------------------------------