Hi, Randy. Don't forget that you can accept _some_coupling, which is a good thing, as it's theoretically impossible to get to zero. Practically, there will be levels that don't matter. Why not calculate capacitive and inductive pickup equivalents? You should be able to find formulas in RF manuals.
Congratulations on the new job. Cortland ====================== Original Message Follows ==================== >> Date: 03-Feb-97 17:51:27 MsgID: 1044-91676 ToID: 72146,373 From: >INTERNET:[email protected] >INTERNET:[email protected] Subj: PWB Layout for high frequency traces... Chrg: $0.00 Imp: Norm Sens: Std Receipt: No Type: Text Sender: [email protected] Received: from ruebert.ieee.org (ruebert.ieee.org [199.172.136.3]) by hil-img-6.compuserve.com (8.6.10/5.950515) id UAA07799; Mon, 3 Feb 1997 20:39:19 -0500 Received: (from daemon@localhost) by ruebert.ieee.org (8.7.5/8.7.3) id TAA15140 for emc-pstc-list; Mon, 3 Feb 1997 19:18:48 -0500 (EST) From: <[email protected]> Subject: PWB Layout for high frequency traces... To: <[email protected]>, <[email protected]> List-Post: [email protected] Date: Mon, 03 Feb 97 16:06:00 PST Message-Id: <[email protected]> Encoding: 18 TEXT X-Mailer: Network Courier V2.1b Sender: [email protected] Precedence: bulk Reply-To: <[email protected]> X-Resent-To: Multiple Recipients <[email protected]> X-Listname: emc-pstc X-List-Description: Product Safety Tech. Committee, EMC Society X-Info: Help requests to [email protected] X-Info: [Un]Subscribe requests to [email protected] X-Moderator-Address: [email protected] Hello all, I am looking for a method to determine the minimum distance which I can route 1 GHz traces from other devices (including metal pin row headers) without compromising the EMC performance (characteristic impedance) of the traces, while preventing any common-mode coupling to the other devices. Any formulas, suggestions, or ideas are appreciated. Also, if anyone knows of any EMC layout modelling software which addresses this issue, please let me know. Thank you, Randall T. Flinders Emulex Corporation [email protected] ====================== End of Original Message =====================
