Sorry for the confusion. I meant the dominant xtalk mechanism could be capacitive or inductive. There won't be any zero valued off diagonal elements. Duane > I would love to learn how could xtalk be "capacitive" or "inductive" only. > Are you saying you can have non-zero off diagonal element on one (C or L) > matrix while the other is zero ? > Chris > > -----Original Message----- > From: Duane Takahashi [mailto:duanet@xxxxxxxxxxxxxxxxxxxxxx] > Sent: Monday, September 29, 2003 8:56 AM > To: si-list@xxxxxxxxxxxxx > Subject: [SI-LIST] Re: Guard traces for differential pairs > > > It also depends on the type of crosstalk: electric or magnetic ( > capacitive or inductive ). If it's magnetic, guard traces won't help. > If it's capacitive, guards will help but will leave you with the > 'magnetic remainder' of the xtalk. > > I've seen high impedance lines, more than 60 ohms, exhibit inductive > xtalk. My guess is guard traces would not have helped in this case. > > Regards, > Duane > > ------------------------------------------------------------------ > 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 > -- Duane Takahashi phone: 408-235-4200 Greenfield Networks fax: 408-727-7790 3260 Jay St. email: duanet@xxxxxxxxxxxxxxxxxxxxxx Santa Clara, CA 95054 ------------------------------------------------------------------ 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