Hello List- Maybe I've been away from these topics too long but... aren't there some general design techniques that solve most of these PCB level EMC concerns? For instance- aren't the 20-H rule and the "image plane technique" still viable at these frequencies? Maybe even more than at lower frequencies? I remember these topics being discussed on this list a few years back. Perhaps one of the old-timers could bring us back up to speed on the applicability of those to today's problems? I look forward to hearing what the list thinks. Best, Gerorge K. "Michael E. Vrbanac" <vrbanacm@xxxx> wrote: > Hi, Vinu, > > Yes, radiation from such structures is possible but for the most > part it would improbable given some simple, reasonable design > practices. The most likely scenario would be when both planes had > casual, indirect reference to system ground. Being power planes that's > ~~~~ < rest is deleted > ~~~~ ------------------------------------------------------------------ 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 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