[SI-LIST] Re: Mixed-mode impedance matrix

Mick

If you want pure differential Z then all you need to do is to convert 
the mixed mode S-parameters from the differential/differential quadrant 
to a Z matrix.


Scott

Scott McMorrow
Teraspeed Consulting Group LLC
121 North River Drive
Narragansett, RI 02882
(401) 284-1827 Business
(401) 284-1840 Fax

http://www.teraspeed.com

Teraspeed® is the registered service mark of
Teraspeed Consulting Group LLC



Zhou, Xingling (Mick) wrote:
> Hi,gurus,
>
> I was asked to simulate differential Z. It was obviously motivated by
> mixed mode S parameter theory. So strictly speaking, I need to convert
> mixed-mode S to Z. I remember somebody asked the same question last
> year.
> As we know, the mixed-mode S parameter theory is well-establised
> (generalized by Andrea Ferrero in 2005).  However, I don't know any
> mixed mode Z.=20
>
> 1. Some engineers do the so-called pure mode conversion, either diff or
> common modes. If so, what do we know about the c-d/d-c mode conversion?
> Something is missing here? Of course, mathematically you can do it.
> 2. Is it possible or meaningful to define the mixed-mode Z? We need a
> reference impedance to do any S-Z converison, what is it for the d-c
> part?
>
> What is the latest development in theory other than some personal
> practices? I mean we need a solid foundation to do it. Any literature? I
> think if the conversion can be defined, we must convert the whole S into
> Z, not piece by piece (so-called pure mode conversion). Otherwise the
> information is incomplete?
>
> Thanks,
>
> 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:
> http://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:     
>               http://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:
http://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:     
                http://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

Other related posts: