[Amps] Re: [Amps] Re: BirdŽ 43 Manual

Paul Christensen w9ac@arrl.net
Thu, 28 Mar 2002 12:59:40 -0500


> I believe that the logical flaw in the argument lies in discussing
> reflected *power*.  *Power* cannot reflected; only voltage and current are
> reflected.

Excellent point Kim.  The term is oftentimes used as a convenience to represent the combined voltage and current terms.  I am guilty
of it.  Taking this one step further in absolute correctness, would it be fair to say that neither the voltage, nor the current
reflects?  Rather, it is really the forward *wave* which is composed of voltage and current that reflects at the point of the
impedance mismatch?

Nevertheless, the result of the reflected wave results in *power* being absorbed by some resistive termination...hopefully, 100% of
it into the antenna...other times inside the resistive portion of the source generator (e.g., fixed Z transmitter) as a result of
wave reflection at the load.

-Paul, W9AC