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Kirkby calibration kit alternatives?

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joeqsmith:
A much better thread:
https://www.eevblog.com/forum/rf-microwave/calculating-correction-data-for-an-unknown-vna-calibration-kit/

小太:

--- Quote from: joeqsmith on September 07, 2024, 05:14:32 pm ---
--- Quote from: radar_macgyver on February 08, 2024, 09:14:11 pm ---I quit after tearing my hair out for a good 2 hours trying to figure out the METAS tools, so if someone else can use it to generate a model I'd be grateful (and maybe post a link to a tutorial?)

--- End quote ---

Sorry for the necropost.  I had watched the METAS video and they did not go into any details on how to accomplish this.  Going through this thread, I too am curious how to derive the coefficients for an unknown set.   

The last time I did this, I used one of the local members Matlab scripts. I would like to try this with METAS.  Any pointers to save my hair are appreciated.   

--- End quote ---

I just followed the instructions by alan.bain posted a bit further up:
(You have to open a measurement file first)


--- Quote from: alan.bain on February 08, 2024, 11:26:31 pm ---Are you trying to use VNA Tool?  I had previously had issues with this and the process I got was

Right-click on the file of measurements, then select Database / Fit Calibration Standard Model (as per the screenshot)

You then choose which type of standard it is and which parameters you don't want to adjust (I would suggest that initially you reduce the set size e.g. remove L2/L3 from the fit for a short) and hit "Start Optimization".   If you try and fit too many it can get into "Not Responding" state which is a bit poor!

--- End quote ---

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