Steve, Agree. Its just easier to generate solutions with orthogonal eigenvectors. Chris -----Original Message----- From: Steve Corey [mailto:steve@xxxxxxxxxxxxxx] Sent: Tuesday, February 26, 2002 7:49 AM To: si-list@xxxxxxxxxxxxx Subject: [SI-LIST] Re: Even mode, common mode, and mode conversion Actually, orthogonality of the eigenvectors is not necessary. Linear independence is sufficient. -- Steve ------------------------------------------- Steven D. Corey, Ph.D. Time Domain Analysis Systems, Inc. "The Interconnect Modeling Company." http://www.tdasystems.com email: steve@xxxxxxxxxxxxxx phone: (503) 246-2272 fax: (503) 246-2282 ------------------------------------------- Chris Cheng wrote: > Classical definition of TEM mode propagation in an N > line coupled transmission line requires waveforms > to be propagating in N orthogonal eigen-vectors > (instead of individual waveforms at each port). > It just happen in a two line transmission line case > the vectors are [1,1] and [1,-1] ejwt and sometimes > people refer the pair as even and odd respectively. > > In current generic SI terms, it is sometimes > refered to a coupled N line transmission line system > where the victim is switching in the same direction > (even mode) as the aggressor or the opposite direction > (odd mode). Note, depends on the setup, sometimes the > waveform in the aggressor ports becomes meaningless > to simplify the analysis time. > > Chris > > -----Original Message----- > From: Doug Brooks [mailto:doug@xxxxxxxxxx] > Sent: Monday, February 25, 2002 9:31 AM > To: si-list@xxxxxxxxxxxxx > Subject: [SI-LIST] Even mode, common mode, and mode conversion > > > > Gurus, > > I've been following the thread on mode conversion and suspect I am not the > only one with this question. Can someone explain, in layman's terms: > > The distinction between even mode and common mode? > between odd mode and differential MODE (not to be confused with > differential traces) > > And does the existence of differential traces add any complications to > these distinctions? > > Thanks for bringing the dummies along with you! > > Doug Brooks > > > ------------------------------------------------------------------ > 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 > > ------------------------------------------------------------------ > 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 > > > > -- ------------------------------------------------------------------ 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 ------------------------------------------------------------------ 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