On 12/8/22 2:16 PM, Roger Need via groups.io wrote:
On Thu, Dec 8, 2022 at 12:52 PM, Stan Dye wrote:
The normal way to do it on the nanovna is a bit different. You attach the
near end of the coax to the nanovna, then calibrate (using the
open/short/load calibration loads) at the far end of the cable. Then you
attach the antenna at the far end - all measurements then show the
performance of the antenna itself, having compensated for the coax
properties (primarily length and attenuation).
I agree with you that this "de-embedding" the cable method is the most accurate and only needs to be done once for the cable being used. Then the cal file can be saved for later recall.
This is what I do, but I don't store it in the NanoVNA. I store it in a PC program (NanoVNA-Saver) as well as a .s2p file and then use scikit-rf to do the processing.
