Richard Harrison wrote:

Jim, AC6XG wrote:
"As far as I know, V/I ratios don`t cause anything."

As symbols for load impedance, V/I ratios cause reflections when they
differ from the r-f transmission line surge impedance which feeds them.

So can a V/I ratio cause reflections in the absence of a physical
impedance? For instance:

Source---50 ohm feedline---+---150 ohm feedline---450 ohms

The V/I ratio at point '+' is equal to 1350 ohms and the reflections
on the coax are the same as if a 1350 ohm resistor existed at point '+'.
So does the V/I=1350 ohms ratio cause the reflections at point 'x'?
Or is the reflected voltage, b1, equal to s11*a1 + s12*a2?
--
73, Cecil http://www.qsl.net/w5dxp



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