[SI-LIST] Re: Question about the Equation in Handbook of Black Magic
- From: Bill * <cerberos@xxxxxxxxx>
- To: jlray2000@xxxxxxxxx
- Date: Tue, 19 Apr 2005 09:44:54 -0700
the eq. is correct since: 1-R2(w) =3D 2Zl/Zl+Zo
-bill
On 4/19/05, ray jiang <jlray2000@xxxxxxxxx> wrote:
> Peter,=3D20
> 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) =3D3D 2Z0/(Zl+Z0). If this deduce is right, i
> think the book has made a mistake.
>=20
> Best Regards,
> Ray Jiang
>=20
> On 4/19/05, Peter Zhu <peter.zhu@xxxxxxxxxx> wrote:
> > All:
> >=3D20
> > One question in Dr. Howard Johnson-High Speed Digital Design:
> >=3D20
> > How to understand the Equation 4.52 and 4.53
> >=3D20
> > 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.
> >=3D20
> > But where do the two equations come from? How to deduce it? I think it'=
s
> > the base to fully understand the signal reflection.
> >=3D20
> > Thanks in advance.
> >=3D20
> > Peter
> >=3D20
> > UTStarcom
> >=3D20
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