R&S SGT100A, Руководство пользователя

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Signal Generator Settings
R&S
®
SGT100A
153 User Manual 1176.8674.02 ─ 07
Figure 7-10: Understanding the displayed values ("Shaping > Linear (Voltage)"
Shaded area = Area where the signal is clipped and the envelope signal is held constant
1a, 1b, 2a, 2b = V
cc,min
/V
cc,max
and PEP
in
Min/Max values that set the borders of the clipping areas
Shaping = Linear (Voltage)
3a = Linear function (dashed line) in "Auto Power" mode, if V
cc,min
= 0 V
3b = Linear function in "Auto Power" mode, if V
cc,min
> 0 V
4a = Linear function (dashed line) in "Auto Normalized" mode, if V
cc,min
= 0 V
4b = Linear function in "Auto Normalized" mode, if V
cc,min
> 0 V
V
in
= Operating point
V
cc
Norm = V
cc
in "Auto Normalized" mode
V
cc
Pow
0
= V
cc
in "Auto Power" mode and V
cc,min
= 0 V
V
cc
Pow
1
= V
cc
in "Auto Power" mode and V
cc,min
> 0 V
For information on the provided shaping functions and their formulas, see:
●
"About the Linear Functions" on page 149
●
"About the Detroughing Function" on page 149
●
"About the Polynomial Function" on page 150
The group of examples in this section uses the same linear shaping function to explain
the representation in the different voltage adaptation modes. The example explains the
displayed values and how they are calculated and converted. The same principle
applies for the other shaping methods.
Common settings
●
"Envelope Voltage Adaptation > Auto Power"
●
V
cc,max
= 1 V
●
PEP
in
Min = -30 dBm corresponds to V
in,min
= 0.0071 V
●
PEP
in
Max = 0 dBm corresponds to V
in,max
= 0.2236 V
Generation of Envelope Tracking Signals