Jeff wrote:
Actually, VSWR can be defined several ways, one of which is:

(1 + |r|)/(1 - |r|)

Where r is the reflection coefficient which can be defined a:

(Zl - Zo)/(Zl + Zo)

Where Zl is the complex load impedance and Zo is the complex source
impedance.

Note that a complex impedance has a frequency dependant part.

So, since Vmax/Vmin (the base definition) has no frequency dependent
part, does that invalidate it?


No, of course not, the other equations are NOT a definition of VSWR,
they are formulas the link other quantities to VSWR.

So who exactly declared which set of definitions is the one and
true definition of VSWR?

Is P=EI or P=E^2R?

Taking Reflection Coefficient for example, it requires the phase
information to be removed before conversion to VSWR by using only its
magnitude.

So what?

To emphasise this VSRW is phase independent and on a lossless
transmission line; its value does not change anywhere along that line;
that is equivalent to rotating around a constant VSWR circle on a Smith
Chart.

Jeff

--
Jim Pennino