[SI-LIST] Re: S, ABCD and T parameters
- From: Ege Engin <engin@xxxxxxxxxx>
- To: doh@xxxxxxxxxx
- Date: Wed, 19 Mar 2003 08:29:49 +0100
Hi Ray and Dan Oh,
In the "Computer-Aided Design of Microwave Circuits" book of K. C.
Gupta, also the T-parameters are recommended. As Dan Oh stated, the
T-parameters give a relation between waves just as the S-parameters. An
important advantage is, that you dont have to deal with the reference
impedances during the conversion procedure, which would be the case for
a conversion to and from ABCD parameters.
Regards,
Ege
"Kyung Suk (Dan) Oh" schrieb:
>
> Hi Ray,
>
> Personally I prefer T matrix as it can be always defined
> as S-parameters since it deals with waves (this is why the
> conversion formula is also simple).
> On the other hand, ABCD deals with voltage itself and it
> can be undefined or numerically ill-conditioned for
> certain structures just like Z and Y matrices for nearly
> short or open circuits.
> From my experience, ABCD and T parameters (matrices) are often
> used for de-embedding purpose and I strongly suggest using
> T-parameter.
>
> Regards,
>
> -Dan Oh
>
> Ray Anderson wrote:
> >
> > A question for the parameter gurus out there:
> >
> >
> > When converting s-parameters to either ABCD (chain) matrix
> > form or T (transfer scattering) matrix form to evaluate the
> > the response of a cascaded network is there any net advantage
> > to using the either ABCD or T matrices as opposed to the other ?
> >
> > It seems that the conversion to/from T parameters may be a bit
> > easier computationally compared to the ABCD conversion, but when
> > using Matlab to do the number crunching the complexity argument
> > is a non-issue.
> >
> > -Ray Anderson
> > Sun Microsystems
> >
> > ------------------------------------------------------------------
> > 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
>
-- Binary/unsupported file stripped by Ecartis --
-- Type: text/x-vcard
-- File: engin.vcf
-- Desc: Visitenkarte für Ege Engin
------------------------------------------------------------------
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
Other related posts:
