Hi All,
For those who have the excellent book 'Experimental Methods in RF Design'
(Wes Hayward W7ZO! et al.) look at
the following section.
7.9 Q measurement of LC resonators.
The test jig described would be ideal for S21 measurements with a nanoVNA
or one could use a signal generator
and tinySA.
I still use my ancient Advance T2 Q meter (A UK instrument using three
valves (tubes)) and can measure up to a
Q of 400 at any frequency from 100 kHz to 100 MHz. The meter is rather
coarse but who needs Q to a high
precision?
73
Phil G3SES
On Sat, 1 Feb 2025 at 12:10, Team-SIM SIM-Mode via groups.io <sim31_team=
[email protected]> wrote:
Hi All
excuse me , i just doing the calibration again at the same time of the two
different stimulus span , and remeasure the same inductor , and i have the
same value of resistor loss , so the issue is resolved and explained ,
just a mismuch of calibration not done at the same time .
but as conclusion : it's rather to do comparaison with the same NanoVNA ,
same calibration , same stimulus span , nothing to change during
comparaison .
Thanks to all .
73's Nizar
