4 MEASUREMENT CONDITIONS SETTING
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4.8.3 Smith Chart Format
Smith chart format is used for representation of impedance values for DUT reflection
measurements. In this format, the trace has the same points as in polar format.
Figure 4.14 Smith chart format
The polar graph does not have a frequency axis, so frequency will be indicated by the
markers. There are five types of Smith chart formats depending on the data displayed by
the marker. The traces will remain the same on all the graphs.
Table 4.13 Smith chart formats
Format Type
Description
Label
Data Displayed
by Marker Measurement Unit
(Y-axis)
S-parameter linear
magnitude
Abstract
number
Linear
Magnitude and
Phase
Smith
(Lin)
S-parameter phase Degree (°)
S-parameter logarithmic
magnitude
Decibel (dB)Logarithmic
Magnitude and
Phase
Smith
(Log)
S-parameter phase Degree (°)
S-parameter real part
Abstract
number
Real and
Imaginary Parts
Smith
(Re/Im)
S-parameter imaginary part
Abstract
number
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