Keith Dysart wrote:
And could someone who likes to write "standing
wave power" (Yuri perhaps?) please provide an
unambiguous definition? It does not have to be
the "right" definition, or agreed by all, just
any definition which is unambiguous.

Confusion reigns because of steady-state short cuts.

The power density (Poynting vector) of any EM wave
is ExH. EM waves cannot exist without a power density.

For pure standing waves, ExH = 0. Therefore, a pure
standing wave is technically NOT an EM wave. It
doesn't move and contains no power. In many ways,
it is an illusion.

A standing wave is a math model created in the human
mind as a useful shortcut. Shortcuts do NOT dictate
reality. Reality is supposed to do the dictating.

Standing waves are the results of the superposition
of two traveling waves. Any power extracted comes
from the component traveling waves, not from the
standing waves. For pure standing waves:

ExH = V*I*cos(A) = 0 watts (per unit area)
--
73, Cecil http://www.w5dxp.com