HP 8712ET User Manual page 112

Making Measurements
Measuring Impedance using the Smith Chart
Figure 3-29 Interpreting the Smith Chart
d. The magnitude and phase of the reflection coefficient, Γ, can be
3-60
determined in the following two ways.
i. Reading the Smith chart as follows:
• ρ = |Γ| = the distance from the measurement point to the
center point on the chart. See
the Magnitude and Phase of the Reflection Coefficient."
• ∠ Γ = θ = the angle between the horizontal axis of the Smith
chart and a line from the center point to the measurement
point. See Figure
Figure 3-30, "Determining
3-30.
ET User's Guide