Polar Format - Agilent Technologies ENA Series User Manual

Setting Measurement Conditions
Selecting a Data Format
Table 3-3 Eight types of rectangular display formats
Type
Log magnitude format
Phase format
Expanded phase format
Positive phase format
Group delay format
Linear magnitude format
SWR format
Real format
Imaginary format

Polar format

In the polar format, traces are drawn by expressing the magnitude as a displacement from
the origin (linear) and phase in an angle counterclockwise from the positive X-axis. This
data format does not have a stimulus axis, so frequencies must be read by using the marker.
The polar format allows users to select one of the following three data groups for
displaying the marker response values.
•
•
•
Figure 3-9 Polar format
82
Y-axis Data Type
Magnitude
Phase (displayed in range from −180° to
+180°)
Phase (can be displayed above +180° and
below −180°)
Phase (displayed in range from 0° to
+360°)
Signal transfer delays within the DUT
Magnitude
ρ
1 +
ρ
----------- - (
: reflection coefficient)
1 ρ
–
Real part of measured complex parameter
Imaginary part of measured complex
parameter
Linear magnitude and phase (°)
Log magnitude and phase (°)
Real and imaginary parts
Y-axis Unit Application Examples
dB •Return loss measurement
•Insertion loss measurement (or
gain measurement)
Degrees (°) •Measurement of deviation
from linear phase
Degrees (°) •Measurement of deviation
from linear phase
Degrees (°) •Measurement of deviation
from linear phase
Seconds (s) •Group delay measurement
(Abstract •Reflection coefficient
number) measurement
(Abstract •Measurement of standing wave
number) ratio
(Abstract
number)
(Abstract
number)
Chapter 3