Jongbae, I believe you may have confused ESD with EMI. If that is the case, I would refer you to Chapter 12 in "Noise Reduction Techniques in Electronic Systems" (2nd edition) by Henry W. Ott, and in particular, Figure 12-17 on p.343. Best regards, -Bill /************************************ / billw@xxxxxxxxxxx / / / / Advanced Electronic Concepts, LLC / / www.aec-lab.com / ************************************ ======================================================= jbtera77@xxxxxxxxx wrote: > Hi, all > Do anybody know about EMI ring and its effect? > > If someone recomment any document or paper which demonstrates EMI ring in > PCB, it will be very helpful. > > Thanks in advance, > Jongbae Park. > > > ------------------------------------------------------------------ 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