[SI-LIST] Re: Impedance calculation of asymmetric coupled lines?

As I learn more about it, there are still two modes, but they are not strictly 
even and odd.  I guess I was referring to the fact that the capacitances from 
each line to ground will be different.

I found some interesting, but math-intensive papers that describe SPICE 
modeling of assymetric coupled lines.  If anyone is interested, I can give them 
here.

From: houfei chen <hfchen73@xxxxxxxxx>
> Zeven and Zodd is defined for coupled line together,
> one is for even signal input, the other is for odd
> signal input.
> Correct me if I am wrong, but I don't think there is
> Zeven for line 1 and Zeven for line 2.
> 
> --- D G <dgun@xxxxxxxxxx> wrote:
> > 
> > Fair enough.  What do I get out of an asymmetric
> > coupled line when I put a differential signal into
> > it?  How do I simulate this with transmission line
> > models?
> > 
> > 
> > From: Fred Balistreri <fred@xxxxxxxxxxxxx>
> > > If they are not electrically symmetrical then they
> > cannot be called
> > > differential so the definition does not apply.
> > > 
> > > Best Regards,
> > > 
> > > D G wrote:
> > > > 
> > > > The calculation of differential and common-mode
> > impedances is well known for symmetric coupled
> > lines.  How about asymmetric coupled lines, where
> > Zeven for line1 is not equal to Zeven for line2?
> > > > 
> > > > --
> > > > Daniel
> > > > ZZZ-dgun-ZZZ-@xxxxxxxxxxxxxxx
> > > > (remove the Z-'s to reply--they're what I do
> > when I read spam)
> > > > 
> > > > --
> > > >
> >
> __________________________________________________________
> > > > Sign-up for your own FREE Personalized E-mail at
> > Mail.com
> > > > http://www.mail.com/?sr=signup
> > > > 
> > > > "Free price comparison tool gives you the best
> > prices and cash back!"
> > > > http://www.bestbuyfinder.com/download.htm
> > > > 
> > > >
> >
> ------------------------------------------------------------------
> > > > 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 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
> > > > 
> > > 
> > > -- 
> > > Fred Balistreri
> > > fred@xxxxxxxxxxxxx
> > > 
> > > http://www.apsimtech.com
> > > 
> > > 
> > 
> > 
> > 
> > --
> > Daniel
> > ZZZ-dgun-ZZZ-@xxxxxxxxxxxxxxx
> > (remove the Z-'s to reply--they're what I do when I
> > read spam)
> > 
> > -- 
> >
> __________________________________________________________
> > Sign-up for your own FREE Personalized E-mail at
> > Mail.com
> > http://www.mail.com/?sr=signup
> > 
> > "Free price comparison tool gives you the best
> > prices and cash back!"
> > http://www.bestbuyfinder.com/download.htm
> > 
> >
> ------------------------------------------------------------------
> > 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 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
> >   
> > 
> 
> 
> __________________________________________________
> Do you Yahoo!?
> Faith Hill - Exclusive Performances, Videos & More
> http://faith.yahoo.com
> 
> 



--
Daniel
ZZZ-dgun-ZZZ-@xxxxxxxxxxxxxxx
(remove the Z-'s to reply--they're what I do when I read spam)

-- 
__________________________________________________________
Sign-up for your own FREE Personalized E-mail at Mail.com
http://www.mail.com/?sr=signup

------------------------------------------------------------------
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 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: