Richard Harrison wrote:
What`s not to understand about matching?

The energy and momentum in EM waves, particularly, the energy and
momentum in the wave reflected from a mismatched load. What happens
to that energy and momentum? We know it joins the forward wave. How
does that energy and momentum get reversed? A virtual impedance is
a result and not the cause of anything.

The reflected volts from the stub are exactly equal and
opposite to the reflected surplus volts from the load at the junction,
and Terman says there is no reflection toward the generator.

I'm not arguing that point. What happens to the energy in the two waves
that have their voltage and current amplitudes equal in amplitude and
opposite in phase? There is no doubt those waves cancel and there is
no reflection toward the generator. But what happens to the intrinsic
energy that pre-existed the cancellation event?

I never won an argument with Terman, though I tried. I believe there is
no reflection past the stub back toward the generator.

No argument about that. The question is where did the energy and momentum
go when those two waves were canceled thus eliminating reflections back
toward the generator. Waves can be canceled. The energy in those waves
cannot be destroyed.
--
73, Cecil http://www.qsl.net/w5dxp



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