Dear Experts, EMI radiated emission is failing in our current ethernet product design .All the ethernet harmonics are appearing in the emission list. I am told that removing the reference plane below the ethernet differential pair signals (RX & TX) will solve this issue. For differential signals reference plane is not required since the return current flows through the other conductor. But will the presence of reference plane have negative effect? Sincerely K.Balasubramanian Project Leader - Hardware. ------------------------------------------------------------------ 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