First normalize the load impedance by dividing by the characteristic impedance, and find this point on the chart. When working in terms of reactance X, an inductive load will be located on the top half of the chart, a capacitive load on the bottom half. It\'s the other way around when working in terms of susceptance B [Siemens]. Draw a straight line from the center of the chart through the normalized load impedance point to the edge of the chart. Anchor a compass at the center of the chart and draw a circle through the normalized load impedance point. Points along this circle represent the normalized impedance at various points along the transmission line. Clockwise movement along the circle represents movement from the load toward the source with one full revolution representing 1/2 wavelength as marked on the outer circle. The two points where the circle intersects the horizontal axis are the voltage maxima (right) and the voltage minima (left). The point opposite the impedance (180° around the circle) is the admittance Y [Siemens]. The reason admittance (or susceptibility) is useful is because admittances in parallel are simply added. (Admittance is the reciprocal of
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