"Dr. Slick" wrote:
wrote in message ...
And yes, |rho| can be greater than unity for a passive load.
...Keith
Absolute Rubbish.. Could you produce a passive circuit that
will reflect a greater voltage than what you feed it? I'd
LOVE to see that...
Several examples have been presented, but rather than accepting
them, you changed the definition of rho. Perhaps you could build
one of these circuits to determine if modifying the definition
of rho was appropriate.
The ratio Pref/Pfwd is directly related to the ratio [rho].
Pref/Pfwd = [rho]**2 Absolute value brackets are a must!
Consider that after the absolute value brackets, the phase information
is gone. But since we are going to a ratio of average (RMS)
values OR peak values of power, it doesn't matter.
In other words, if you use V**2/R, the "V" can be either peak or
RMS, it doesn't matter, because it is a ratio. And of course, the "R"
doesn't matter either. And of course, the phase information is gone
with
the absolute value brackets.
If you agree that the Pref/Pfwd ratio cannot be greater than 1
Which I haven't since Pref and Pfwd are just computed numbers and
the result for some circuits is that Pref/Pfwd is greater than 1.
Of course, Pnet is not equal to Pfwd-Pref in these circumstances
so there is no violation of basic physics. It is just that the
computation of Pfwd and Pref does not really produce real powers
(though, again unfortunately, the dimension of the quantity produced
is power).
for a passive network, then neither can the [Vref/Vfwd]= rho be
greater
than 1 either.
....Keith