zionico90
Member level 2
Hi guys,
I have an exercise which ask to design a suitable 1st order pass-band active filter in order to satisfy the attached specification. My understanding of the exercise is the following:
- I have to use two 1st order filter in cascade (LP+HP filter) in order to have the 20dc/decade slope
- I assume that f=22 kHz is the -3dB cut-off frequency
- For the design I assume that the 12dB gain is the one specified at fc=22 kHz, so the LP and HP filter have been design to have a gain of 12 dB + 3dB
In annex the picture of the designed circuit and the achieved frequency response. Do you think that am I correct? My understanding is that it is not possible to realize a filter with the specified shape because a certain rounding is not possible to avoid. What do you think?
Thanks!
I have an exercise which ask to design a suitable 1st order pass-band active filter in order to satisfy the attached specification. My understanding of the exercise is the following:
- I have to use two 1st order filter in cascade (LP+HP filter) in order to have the 20dc/decade slope
- I assume that f=22 kHz is the -3dB cut-off frequency
- For the design I assume that the 12dB gain is the one specified at fc=22 kHz, so the LP and HP filter have been design to have a gain of 12 dB + 3dB
In annex the picture of the designed circuit and the achieved frequency response. Do you think that am I correct? My understanding is that it is not possible to realize a filter with the specified shape because a certain rounding is not possible to avoid. What do you think?
Thanks!