On Sun, Oct 13, 2019 at 10:12 PM, John Gord wrote:
¡.. "To get dB, you compute 20*log(sqrt( real^2 + im^2)), or equivalently
10*log(real^2 + im^2).
10 * log (0.019876752^2 + 0.001359617^2) = -34.013, the insertion loss in dB.
You can also get the phase by taking the arctan (im/re). "
--John Gord
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John,
That's the key piece of info I needed. None of my web searches returned that conversion formula. I can now use Excel to convert the data to dB and then apply some additional correction factors. I would eventually like to use Python to read the data directly from the NanoVNA and post process, plot and save it to a factor file. That's something I never would have even considered before purchasing the NanoVNA. The device has expanded my learning horizon. Thanks to everyone who responded.
- Herb
