Thank you all for a very extensive and informative discussion re even and odd mode. I still have one remaining question. Is it possible to have a "common mode" signal in a single transmission line system (such as a stripline transmission line)? Or is what we commonly call "Common Mode" actually restricted to "even mode" currents in a two (or more) line system? After all the effort you went to in the previous thread, I hope this question is at least framed correctly!! Doug Brooks _____________________________________________________________________ UltraCAD Design, Inc. Celebrating 10 years of design excellence! www.ultracad.com ------------------------------------------------------------------ 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