Bob Agnew wrote:
When the reflection coefficient rho is +/- 1 the VSWR is infinite. When rho
= 0 the VSWR is 1:1. A VSWR of 1:1 corresponds to the unit circle at the
center of the Smith Chart.

And when SWR = 1:1, that circle has a radius of zero, i.e.
it is a point at the center of the Smith Chart.

But it seems to me that no matter what the Z0, whether purely
resistive or containing some reactance as does ordinary transmission
line, on a line with reflections, there will be a point where the
ratio of net voltage to net current has the current leading the
voltage and a short distance away, the current is lagging the voltage.
In between those two points, it seems to me that there must exist a
point where the voltage and the current are in phase. How could the
net (virtual) reactance go from capacitive to inductive without having
the voltage and current in phase at a point in between?
--
73, Cecil http://www.qsl.net/w5dxp