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The illustration shows a circuit where two points P sub min and P sub max are marked on the transmission line at distances d sub min and d sub max from output node A. The distance between the two points is lambda over 4, with A connected to a load of Z sub L equals 2 plus j 1.

The Smith chart shows the families of r sub L and x sub L circles. Point A is marked in the upper part of the chart at d equals 0.213 lambda. Point P sub max is located on the horizontal axis to the right of origin, at a distance labeled d sub max equals 0.037 lambda, which is the distance to voltage maximum from load. And point P sub min is located on the horizontal axis to the left of origin, at a distance labeled d sub min equals 0.287 lambda, which is the distance to voltage minimum from load. The value of r sub 0 at P sub max is 2.6. An S W R circle is drawn passing through A, P sub max and P sub min.