Bill, Yes, I believe every is in the Matrix since it is a complete description of the network, but not any of the subset. Of course, if we care the pure diff/comm mode, we ,may get some simplication. Regards, Mick=20 -----Original Message----- From: si-list-bounce@xxxxxxxxxxxxx [mailto:si-list-bounce@xxxxxxxxxxxxx] On Behalf Of Bill Beale Sent: Thursday, June 29, 2006 11:43 PM Cc: si-list@xxxxxxxxxxxxx Subject: [SI-LIST] Re: Mixed-mode impedance matrix Hi Mick, The Z matrix is always meaningful. [V] =3D3D |Z|[I] As it implies, it is a simple ratio of voltage to current. Hence, the mixed mode coupling shows when you have a differential =3D voltage for instance, how much even mode current do you get. Thanx, Bill P.S. As my friend Eric Bogatin always told me 'It's all in the matrix'. =3D :-) >=3D20 > Scott, > Thanks for your advice.=3D3D20 > However, as I asked, does this mathematical operation tell us=3D20 =20 >anything? > For example, can we even say, > Vdd=3D3D3DZss*Idd? By looking into the mixed mode S-matrix, I=3D20 = doult=20 >the equation is true in general. If so, is it=3D20 meaningful by = doing=20 >the math? > And how can we apply it to designs? >=3D20 > Mick ------------------------------------------------------------------ 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 FAQ wiki page is located at: http://si-list.org/wiki/wiki.pl?Si-List_FAQ List technical documents are available at: http://www.si-list.org List archives are viewable at: =20 //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 =20 ------------------------------------------------------------------ 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 FAQ wiki page is located at: http://si-list.org/wiki/wiki.pl?Si-List_FAQ List technical documents are available at: http://www.si-list.org 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