R&S SGT100A, User Manual

Page: 208 / 593

Signal Generator Settings
R&S
®
SGT100A
177 User Manual 1176.8674.02 ─ 07
To access the polynomial coefficients setting and define a higher-order polyno-
mial
1. Select "I/Q Analog > I/Q Analog Settings > General".
2. Enable "RF Envelope > On".
3. Select "Shaping Settings > Shaping > Polynomial".
4. Select "Envelope Voltage Adaptation > Auto Normalized".
5. Select "Polynomial Coefficients"
Figure 7-20: Polynomial Coefficients: Understanding the displayed information
With the provided settings, you can define a polynomial function with up to 10
th
order to describe the envelope shape.
6. Select "Polynomial Order = 2" (n = 2).
7. Set the constant a
0
and the polynomial coefficients a
1
and a
2
.
8. Select "Apply".
The instrument loads the configured values and displays the shaping function.
9. To store the defined shaping function:
a) Select "Save/Recall Polynomial"
b) Navigate throughout the file system and enter a "File Name", e.g.
MyPolyno-
mial_2thOrder
c) Select "OK".
10. Select "Polynomial Coefficients > OK" to close the dialog.
Save/Recall Polynomial .............................................................................................. 178
Polynomial Order ........................................................................................................ 178
Polynomial constant and coefficients .......................................................................... 178
Apply, OK .................................................................................................................... 178
Generation of Envelope Tracking Signals