On Tue, Jan 7, 2020 at 09:40 AM, vincent coppola wrote:
" ..The problem appears to be in determining the correct 3db points. Please note the band stop filter is the only filter that I have tried to measure Q .."
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Vince,
You might include a screen capture of showing the analysis data and the bandpass filter. If your filter is not flat in the bandpass, has large ripple in the bandpass, or there are not enough measurement points then an accurate automated determination of the 3 dB points may not be possible.
The program asks the user to place a marker in the flat area of the bandpass and then computes the lower and upper 3 dB frequency points from that marker value. The computed points may not correspond to any of your actual measurement points and the program will choose the closest point. For better accuracy, choose a higher number of sweep segments which will give more measurement points over the frequency range.
- Herb
