@Roger And @Dave,
If I get you correctly, that is the "skin" current that gets radiated from the antenna as pure RF ? If so, that remaining common mode current is reflected back at the source and then "recombine" at the connector to be read as "raised noise" or reflected power ? Can I see it this way ?
If I'm still correct, then the 2-3 turns around the ferrite will "trap" this third wire current and give me a more accurate reading ?
In the last test I did, I had wrapped one ferrite at each end of the cable for 2 turns. When I put my hands on coax, I could see that I got almost no " hand touching" effect on the VNA. Well, I want to thank you for this advice because it really helped me.
Now, here are the inductors and capacitors I bought.
Wurth Electronics 0603 RF inductor designer's ket
RF and microwave 0603 capacitor kit
As for all the previous test I made in the last few days, each and every time I tried to add a matching inductor and/or capacitor, it did not helped. My measurement got to the other side of the spectrum. This leads me to think that as exactly as you pointed out, my measurement accuracy is distorted.
I'll make some other testing with my smaller ferrite with 3 turns instead of 2 as close as I can to the insertion point and get back to you with some results.
I don't know much I can thank you enough for all the time you take helping me out. It is truly appreciated.
Nic
