We have designed an antenna in HFSS. And for experimental results we went for measurements in VNA. How to export the S11 plot from VNA so that it can be imported into HFSS, and the simulated and measured results can be shown in the same figure ?
what are steps to follow in VNA file exporting ?? and in HFSS While importing ?
Hi Raviteja,
From your VNA you can export the S11 data as a Touchstone file (S1P). The steps will depend on your equipment, but basically it is a normal save process.
In HFSS, you can import the S1P file in your simulation by rigth-click on Results>Import Solutions>Import Solution>Browse and Import.
The measured results (S1P) will be found Report window by changing the Solution options.
In VNA,
goto save as,
select prn as extension.
This prn file is converted to excel file. This file you can import into HFSS.
There are three ways to extract result from VNA:
1) By Export the S11 plot by using usb and save as jpg/gif format.
2) By selection of a frequency band and taking the readings in close interval (30-40) readings and plotting it in excel/ origin pro.
3) Clicking picture/ scan the VNA Screen it will also provide you the same information.
Basically VNA export the graph file type as GIF/JPG/PNG.so you can save the S11 plot in directly USB storage device location attached with VNA. But there is problem that, you can not able to import those file type directly into HFSS. Because HFSS only support the CAD file type from import option.
You can export your S11 information as s1p file extension which can be viewed in notepad or excel in your computer, that will basically contain all magnitude and phase information at all frequencies in your frequency sweep setting, so when imported and viewed with HFSS it will show you the exact plot acquired in VNA. Hope this helps.
Hello,
From power on or Preset state:
1. Press [Save/Recall]
2.Press {Select Disk}, {Save to Internal Disk}, {Return}
3. Press {Define Disk Save}, {Data Only On}
4. Press {Save Using ASCII}, {Return}
5. Press {Save State} to save the current measurement as in S2P format.
The resulting file will be saved with a *.s1 and *.s2 extention. The data will be arranged in the following nine columns:
Frequency /S11R /S11I /S21R /S21I /S12R /S12I /S22R /S22I
Frequency is self explanatory. The other columns contain the formatted S-parameters, but the values depend upon the current format of the analyzer display. The values may be Real and imaginary pairs, or magnitude and phase.
To import an S2P file into Excel 97:
1. Select File/Open, Files of Type "All Files"
2. Select the appropriate file from the list (it will have an .s1 or .s2 file extension). Open it.
3. This activates an Import Wizard. In the Wizard, select Delimited, then Next.
4. Unclick the Tab button, and click on the Space button.
Click on the "Treat consecutive delimiters as one" button, then click on Finish.
Thanks,
Several process is there, but the easiest process is extract the data from VNA as touchstone file as S1P or S2P file and import the file in HFSS using import option as Results>Import Solutions>Import Solution>Browse and Import.
Generally, process is save the data from VNA as touchstone file as (SnP) S1P or S2P file and import the file in HFSS using import option as Results>Import Solutions>Import Solution>Browse and Import.
you can export .csv file from VNA and HFSS both and open both files in excel or matlab and compare results there that will be easy option i guess. Thanks
You can take the file of S-parameters in .csv extension from VNA, after that you can import that file directly to the hfss by use the following steps:
1. Open the S11 plot in hfss
2. Right click on the plot (pop up window has open)
3. Click on import
4. Select the .CSV file extension from the destination.
5. Press ok
By using these steps you can compare the simulated s11 with measured s11 in Hfss software.
Export .csv file from VNA and import in HFSS. You can also compare simulation and measurement results on excel if you save in .csv format. Thanks!
There is no need to import VNA data into HFSS. Export the VNA data as .csv and also export HFSS data and plot in matlab for comparison.
Just save the data in .csv format and then you can import that in HFSS. Also you may use some specialized software like OriginPro for plotting/comparing the results from HFSS and VNA in a more professional manner.
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