[SI-LIST] Re: Question about the Equation in Handbook of Black Magic

Ray:
The 4.53 is the reflection at the terminal, so it is (Zl-Z0)/(Zl+Z0),
WHY?
Why do you think (Zl-Z0)/(Zl+Z0) has been reflect back to source?

Thanks

Peter


-----Original Message-----
From: ray jiang [mailto:jlray2000@xxxxxxxxx]=20
Sent: Wednesday, April 20, 2005 12:26 AM
To: Peter Zhu; si-list@xxxxxxxxxxxxx
Subject: Re: [SI-LIST] Question about the Equation in Handbook of Black
Magic

Peter,=20
    I have some idea on this question. The 4.53 is the reflection at
the terminal, so it is (Zl-Z0)/(Zl+Z0). The deduce can be found in any
books about transmition line theroy. As 4.52, i agree with you that it
is the fraction of propagating signal that is absorbed by the load,
which should be 1-R2(w) =3D 2Z0/(Zl+Z0). If this deduce is right, i
think the book has made a mistake.

Best Regards,
Ray Jiang

On 4/19/05, Peter Zhu <peter.zhu@xxxxxxxxxx> wrote:
> All:
>=20
> One question in Dr. Howard Johnson-High Speed Digital Design:
>=20
> How to understand the Equation 4.52 and 4.53
>=20
> I believe the T(W) is the fraction of propagating signal that is
> absorbed by the load, and the R2(W) is the fraction of propagating
> signal that reflects back toward the source.
>=20
> But where do the two equations come from? How to deduce it? I think
it's
> the base to fully understand the signal reflection.
>=20
> Thanks in advance.
>=20
> Peter
>=20
> UTStarcom
>=20
> ------------------------------------------------------------------
> To unsubscribe from si-list:
> si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field
>=20
> or to administer your membership from a web page, go to:
> http://www.freelists.org/webpage/si-list
>=20
> For help:
> si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field
>=20
> List FAQ wiki page is located at:
>                http://si-list.org/wiki/wiki.pl?Si-List_FAQ
>=20
> List technical documents are available at:
>                http://www.si-list.org
>=20
> 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
>=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:
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: