Morteza.teymoori
Newbie
I want to calculate the Q-factor using the S-parameter results. However, it came to my attention results significantly is different when I use the s-parameter magnitude (range [0 1]) compared with when I use dB scale.
Calculation method:
1. Magnitude
Q=f0/(FWHM)
2. dB scale
Q=f0/(df)
df=f2-f1 where f1 and f2 have 3dB difference that the resonance strength in f0.
The difference between these two are so huge. For example while the Q-factor appears to be 1700 when I use dB scale, the result for Q-factor calculation using magnitude is around 60-80.
What is my mistake?
Calculation method:
1. Magnitude
Q=f0/(FWHM)
2. dB scale
Q=f0/(df)
df=f2-f1 where f1 and f2 have 3dB difference that the resonance strength in f0.
The difference between these two are so huge. For example while the Q-factor appears to be 1700 when I use dB scale, the result for Q-factor calculation using magnitude is around 60-80.
What is my mistake?