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Any variable can be swept, but there are some naming requirements. If it is possible to derive the swept quantity from the A/B waves or DC voltages/currents (e.g. power or bias), then the variable name must be prefixed with an "i." If it is not possible to derive the swept quantity from the A/B waves or DC voltages/currents (e.g. temperature), then the variable name must be prefixed with an "r." Note that power, gamma, and frequency sweep names must match the file standard exactly but that these names are already setup in the Load Pull Template Schematic. Please contact technical support awr.support@ni.com
for additional details.
Are 2nd and 3rd harmonic load pull (including nested harmonic sweeps) and two-tone load pull supported?
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There are a lot of load pull measurements. How do I know which to use?
Let's start with a decoder for the measurement names.
All the new, swept load pull measurements begin with "G_."
Measurements that align data to a specified value end in "A."
Measurements that plot the intersection between contours contain "_C2."
Measurements that plot a single value contain "_V."
Measurements that plot a real value contain "_R."
Measurements that plot a complex value contain "_C."
Measurements that plot the response at any swept harmonic other than fundamental load (i.e. PAE vs. 2nd harmonic gamma sweep, source pull, etc.) contain "EX."
Measurements that plot the interpolated maximum or minimum values contain "MAX" or "MIN."
So with that foundation in mind here's a phenomenological list of the most commonly used measurements
If you want to plot contours
Load_Pull > G_LPCM plots contours
Load_Pull > G_LPCM_A plots contours aligned to a specified value (like 1 dB compression)
Load_Pull > G_LPCM_C2 plots the intersection between two contours
If you want to plot contour interpolated min or max values
Load_Pull > G_LPCMMIN plots the contour min value
Load_Pull > G_LPCMMAX plots contour max value
If you want to plot a single contour at a specified value
Load_Pull > G_LPCM_V plots a single contour at a specified value
If you want to see the gamma points in your file
Load_Pull > G_LPGPM plots gamma points for a swept load impedance
If you want to plot swept data on a rectangular plot (like PAE vs. output power)
Data > PlotMD_R plots real data with an x and y-axis chose in the measurement (like PAE vs. output power)
Are 4th and 5th harmonic load and source pull supported?
Possibly, it depends on your application. For more information please contact the AWR Product Marketing team.
Is source pull supported?
Yes, in v13+. Please see Swept_Load_Pull_Measurements_Complete for example.
Is System load pull (i.e. ACPR / EVM load pull) supported?
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The new load pull simulation script doesn't seem to auto-generate Graphs for me. Is that intended?
Yes, that's by design. With the old load pull script the user had selected the measurements which they wanted to capture, and the only swept dimension was the load gamma. Therefore it was relatively easy to know what to plot. With the new load pull script the pull script the output data is A/B waves. Thus, there are a lot more degrees of freedom in what values to plot. Similarly, the swept load pull data adds dimensionality to the data which makes auto-plotting complex. For example, plotting all PAE contours at all swept power points would probably not be very useful. We're open to the idea of bringing auto-plotting back if we feel that there is consensus on what plots would be universally useful. If you have some thoughts on this please share them with the AWR Product Marketing team.
Are 2nd and 3rd harmonic load pull (including nested harmonic sweeps) and two-tone load pull supported?
Yes, in v12.01+. Please see Swept_Load_Pull_Measurements_Complete for example.
Are 4th and 5th harmonic load and source pull supported?
Possibly, it depends on your application. For more information please contact the AWR Product Marketing team.
Is source pull supported?
Yes, in v13+. Please see Swept_Load_Pull_Measurements_Complete for example.
Is System load pull (i.e. ACPR / EVM load pull) supported?
Yes, in v13+. Please see System_Load_Pull for example.
Can I de-embed a package model from my load pull data?
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It is defined as compression from maximum gain. For gain compression defined from linear gain (or from the first input power point) use G_Compress.
There are a lot of load pull measurements. How do I know which to use?
Let's start with a decoder for the measurement names.
All the new, swept load pull measurements begin with "G_."
Measurements that align data to a specified value end in "A."
Measurements that plot the intersection between contours contain "_C2."
Measurements that plot a single value contain "_V."
Measurements that plot a real value contain "_R."
Measurements that plot a complex value contain "_C."
Measurements that plot the response at any swept harmonic other than fundamental load (i.e. PAE vs. 2nd harmonic gamma sweep, source pull, etc.) contain "EX."
Measurements that plot the interpolated maximum or minimum values contain "MAX" or "MIN."
So with that foundation in mind here's a phenomenological list of the most commonly used measurements
...
If you want to plot contours
Load_Pull > G_LPCM plots contours
Load_Pull > G_LPCM_A plots contours aligned to a specified value (like 1 dB compression)
Load_Pull > G_LPCM_C2 plots the intersection between two contours
...
If you want to plot contour interpolated min or max values
Load_Pull > G_LPCMMIN plots the contour min value
Load_Pull > G_LPCMMAX plots contour max value
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If you want to plot a single contour at a specified value
Load_Pull > G_LPCM_V plots a single contour at a specified value
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If you want to see the gamma points in your file
Load_Pull > G_LPGPM plots gamma points for a swept load impedance
If you want to plot swept data on a rectangular plot (like PAE vs. output power)
...
How do I set the iPower index when using aligned measurements? Since the data is aligned what does this index even mean?
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