Kitty, in my experience it depends on the engineer and on the signal. Some of my engineers want the corners rounded and some of them want a mitered corner that looks something like this: (a 90 degree angle on the inside of the miter and a 45 degree angle on the outside). ________ \ \ ____ \ | | | | | | | | | I think it also depends on how sensitive the signal is. ------------------------------------------- Jacqueline O'Grady Product Development Spotwave Wireless 1 Hines Rd. Ottawa, Ontario K2K 3C7 613 591-1662 ext. 252 [log in to unmask] -----Original Message----- From: Kitty Hines [mailto:[log in to unmask]] Sent: Thursday, December 02, 2004 2:39 PM To: [log in to unmask] Subject: [DC] Another RF Question?? Which trace geometry is best suited for High-Speed RF signals... Rounded traces, or Square corners? I've heard the theory that if you use corners... the current travels straight, then turns to it's location, but any EMI/cross-talk noise will continue to try to travel straight and "fall of the edge"? What's your theory on this? Inquiring minds want to know... Thanks, Kitty **This transmission may contain information that is privileged, confidential and/or exempt from disclosure under applicable law. If you are not the intended recipient, you are hereby notified that any disclosure, copying, distribution, or use of the information contained herein (including any reliance thereon) is STRICTLY PROHIBITED. If you received this transmission in error, please immediately contact the sender and destroy the material in its entirety, whether in electronic or hard copy format. Thank you.** ---------------------------------------------------------------------------- ----- DesignerCouncil Mail List provided as a free service by IPC using LISTSERV 1.8d To unsubscribe, send a message to [log in to unmask] with following text in the BODY (NOT the subject field): SIGNOFF DesignerCouncil. To temporarily stop/(restart) delivery of DesignerCouncil send: SET DesignerCouncil NOMAIL/(MAIL) Search previous postings at: www.ipc.org > On-Line Resources & Databases > E-mail 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 ---------------------------------------------------------------------------- ----- --------------------------------------------------------------------------------- DesignerCouncil Mail List provided as a free service by IPC using LISTSERV 1.8d To unsubscribe, send a message to [log in to unmask] with following text in the BODY (NOT the subject field): SIGNOFF DesignerCouncil. To temporarily stop/(restart) delivery of DesignerCouncil send: SET DesignerCouncil NOMAIL/(MAIL) Search previous postings at: www.ipc.org > On-Line Resources & Databases > E-mail 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 ---------------------------------------------------------------------------------