Richard Harrison wrote:
Someone wrote:
"The energy in canceled waves is why the forward power is often greater
than the source power."

Bird says:
"Power delivered to and dissipated in a load is given by:

Wl = watts into load = Wf - Wr"

The point I was trying to make is that the forward power
into a Z0-match point can be 100 watts while the forward
power out of the Z0-match point is 200 watts. In that
case, the Z0-match point is an interferometer of sorts.
An ideal non-reflective thin-film coating on glass is a
Z0-match. Hint: characteristic impedances are directly
related to indexes of refraction.
--
73, Cecil http://www.w5dxp.com