Keith Dysart wrote:
When the two transmission lines are removed, how can
these imputed powers exist? What impedance did you
assign to the non-existant section of line to permit
you to compute these powers?

I have very deliberately chosen and limited the
scope of the examples to a 50 ohm environment.
Those imputed powers are therefore whatever an
ideal 50 ohm directional wattmeter indicates.

The distributed network model also works for circuits
as it is a superset of the lumped circuit model.
--
73, Cecil http://www.w5dxp.com