S-Gamma Corrections - R&S NRP Series User Manual

®
R&S NRPxxS(N)
9.8.4.4

S-gamma corrections

Using the complex reflection coefficient, you can determine the power P delivered by
the signal source with considerably greater accuracy.
The coefficient of the signal source Γ
●
[SENSe<Sensor>:]SGAMma:MAGNitude
●
[SENSe<Sensor>:]SGAMma:PHASe
The complex reflection coefficient Γ
correction, is prestored in the calibration data memory for many frequencies.
Figure 9-7: Correction of interactions between the power sensor and the signal source
If the gamma correction is performed in combination with an S-parameter correction
([SENSe<Sensor>:]CORRection:SPDevice:STATe
ered:
●
Interaction of the signal source with the S-parameter device
●
Input of the power sensor, depending on the transmission, expressed by the term
s
The interaction between the complex reflection coefficient Γ
and the reflection of port 2 is expressed by s
rection is enabled, this interaction is always considered, regardless whether gamma
correction is performed or not.
Figure 9-8: Correction of interactions between the power sensor, the signal source, and the S-param-
Remote commands:
[SENSe<Sensor>:]SGAMma:CORRection:STATe
[SENSe<Sensor>:]SGAMma:MAGNitude
[SENSe<Sensor>:]SGAMma:PHASe
User Manual 1177.5079.02 ─ 15
Sensor
s
12 21
Sensor Source
eter device
Configuring basic measurement parameters
is defined by its magnitude and phase:
source
of the sensor, which is also required for the
sensor
Source
, see Figure
22
S
21
S
S
11 22
S
12
..............................................................112
......................................................................... 112
................................................................................112
Remote control commands
NRP
3-Path Diode Power Sensor
MHz to GHz, 100 pW to 200 mW (−70 dBm to +23 dBm)
SMART SENSOR TECHNOLOGY
ON), the following is consid-
of the power sensor
sensor
9-8. If the S-parameter cor-
NRP
3-Path Diode Power Sensor
MHz to GHz, 100 pW to 200 mW (−70 dBm to +23 dBm)
SMART SENSOR TECHNOLOGY
111