Roy Lewallen wrote:
I hope you guys realize that the stated equation is correct only when I1
= I2. Otherwise the solution is a sine or cosine function with a phase
term.

Of course, I1=I2 is the definition of a standing wave
which is the topic of this discussion. Any current left
over is traveling wave current, by definition.

The concept is akin to the separation of differential
current from common-mode current. Differential currents
are equal by definition.

Standing wave component currents are equal by definition.
--
73, Cecil http://www.qsl.net/w5dxp