Great, thanks! I can see that your article addresses the issue nicely, but it also uncovers so many questions a non-EE like me has:
- I am guessing a “trap network” is a series resonant circuit, but I’m not sure.
- I don’t know what constitutes a “high Q variable capacitor” which your method requires.
- When X is 0 at resonance, I get that Rs is all that is left of impedance… but why is that in parallel with the termination resistance?
- Indeed, is “termination resistance” simply the built-in resistance of the meter?
- What is a “notch” and why is there an attenuation depth when series resonance provides a lack of attenuation?
- Couldn’t I simply measure the series resonant circuit with the VNA and get a Rs reading directly, but would it be any better than what I get off the coil alone?
Indeed, possibly related to my third point above: I have never understood why X / Rs = Rp / X. I have played with hypothetical cases, and it seems to not work.
Andy
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On Oct 11, 2021, at 9:24 AM, alan victor <avictor73@...> wrote:
see msg #23812. Also type in Q measurement to the search box.
