#### Relay221

##### New Member

Below is the schematic of this filter (active band pass filter) + its characteristics.

I care about the correct solution If I misunderstand something or there is an error in the diagram in the characteer please correct me

characteristics (calculated using excel):

I am not 100% sure about what I drew , but it seems to me that there is a fmeasure otherwise fg but it is calculated with the value of delta f0 or delta f10 from the characterization . I marked fmeasure for -3dB delta f0 and -20 dB delta f10 .

But I still need fcalc (calculated from the formula to later calculate the percentage of measurement error) And from what I tried I got the formula in school . fcalc=1/(2π√LC) but it seems that the formula is not correct or I don't know how to calculate it . Using chat gpt I found out that there is a formula Fg= fl+fh/2 Where fg is the cutoff frequency,fL is the lower cutoff frequency, and fH is the upper cutoff frequency . I don't know if the formula is correct and I did everything right but please correct me if necessary