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Please can you explain me where is my mistake; I am like Saint Thomas. Here is the digital test data (my antenna) S11 = -0,310484238 +j 0,011489099 Zo = 50 With the formula Z = Zo * (1+gamma) /

in Excel, IMARGUMENT returns the angle (in radians), IMABS is the magnitude

I can do the math.... I taught electronics including L - R- C circuits and conversions for 17 years. I was just looking for a quick way to find them on the Nano. And |Z| was my main interest. Although

The S1P files contains the real and imaginary parts of the reflection coefficient, Greek letter ‘gamma’. The complex impedance Z is given by Zo * (1+gamma) / (1-gamma)

You could just post a sample excel file.. (of maybe the first 10 lines of a S1P). That's what I've done.

Interesting discussion. I used to work for HP. Later sold Cascade probe stations. Calibration was always "difficult". Especially on wafer: how far do you overdrive (i.e. press the probe down), how

Hi Wayne, Mark at QSL Communications sells several VNAs including the Hugen NanoVNA-H and the Deepelec NanoVNA-F (now DeepVNA-101). https://www.qslcomms.shop/ This is the VNA page

Maybe it works with just the attached document. The original document, more readable, is a .docx in French -- Fran?ois

Thanks a lot. README.TXT is only for GND.EXE Do you have help files for AVG.EXE and S11.EXE? -- F1AMM Fran?ois

Admitting that it is of interest to examine the phase of the impedance, it is indeed necessary to start from the Touchstone S11 file (.s1p). It is an ASCII file where you find, on each line: the

I've written a Windows utility that checks Touchstone files for |S11| > 1. It handles version 1.1 files, the kind NanoVNAs generate, as well as version 2.0. It lists maximum |S11| and the number of

Try to connect through any free VPN, pointing to Netherlands... They can!

I assume when you say "lumped impedance and phase angle" you mean display |Z| (sqrt of [r^2+X^2]) and impedance phase angle. The NanoVNA and the two popular PC programs (NanoVNA Saver and NanoVNA app)

You never posted in the other topic what you finally did to correctly measure the antenna with the NanoVNA. If you don't establish the "reference plane" rightat the antenna your impedance measurements

I am trying to figure out if the Nano can display the lumped impedance and phase angle numerically without having to calculate from r + jX. I expected to read that from the POLAR menu, but some

Most simple antennas, near their design frequency, have an impedance curve that looks a lot like a RLC resonance. The real part changes fairly slowly, but the imaginary part changes quickly. On the

Good, let us know how you get on with them, I'm sure there are others interested in using baluns with the nanoVNA. Kind regards Ed

You should measure the impedance at the frequency you plan on using. I have found fairly large variations over a few MHz in this range before. Zack W9SZ wrote:

Hello Douglas, Thanks for your response. Best regards Le ven. 22 juil. 2022 à 12:55, Douglas Butler <sherpadoug@...> a écrit :

I just ordered COILCRAFT TTWB-1-ALD on ebay (US seller), 20pcs for $25 including S&H (seller accepts "best offers"!) https://www.coilcraft.com/getmedia/93a92d15-aec0-4819-94b4-af99a982afa4/ttwb.pdf