Dr. Slick wrote:
Cecil Moore wrote:
Yes, the pair that satisfies the conservation of energy principle
including source power and losses in the feedline. For instance,
if a load is accepting 100 watts when the power reflection coefficient
is 0.25, Pfwd(0.75) = 100W, so Pfwd = 133.33W, Pref = 33.33W.

From Pozar: For a lossless 2-port network,
[s11]**2 + [s21]**2 = 1
0.25 + 0.75 = 1
So hopefully this would be a lossless, passive network.

Yes, the above is from an earlier lossless Z0-matched example.

If any heat was generated in this passive network
(NOT the load, the network itself), then the sum of the power
reflection coefficient and the power transmission coefficient would
be less than one.

My example was the impedance discontinuity point between 50 ohm
feedline and 150 ohm feedline. Not much room for losses in 0.1"
of copper.
--
73, Cecil http://www.qsl.net/w5dxp



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