Roy Lewallen wrote:

H. Adam Stevens wrote:
If the source is matched to the line, is the reflected wave dissipated as
heat in the source?

Nope. I've shown this definitively a number of times on this newsgroup.

Yep, by assuming something that is true only by definition. :-)
If the source is hidden in a black box and includes a circulator
with load, the reflected wave *IS* dissipated as heat in the
source. For some phases of reflected energy, the dissipation does
increase. You say it is because of the mismatch but the mismatch
is because of the reflected waves. So which came first, the mismatch
or the reflected waves? I suggest that the mismatch will not happen
until the reflected waves arrive. Try it with a one second long
transmission line.
--
73, Cecil http://www.qsl.net/w5dxp



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