I am not an expert in Excel, and therefore, I want to know if there is a way of including the slope (dB/decade) in a bode gain plot in Excel or any free software (that allows to first input the frequencies and corresponding gain in dB, and then including the slope somehow)?
Electrical – Plotting a bode gain plot with the slope in Excel
bode plotloglow passMATLABtransfer function
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Best Answer
Excel could be brow-beaten into this, given that it can represent an equation for your transfer function and process a list of data-result pairs.
Like here for example: http://www.engineers-excel.com/Apps/Bode_Plot/Description.htm
But... it's not going to choose the filter parameters for you, at least, not without a lot of back-end work.
This is probably closer to what you want: https://tools.analog.com/en/filterwizard/
Also relevant: Are there good free software analog filter design tools? If not, why?
MORE:
The ask is to analyze Bode plot data and extract from that a transfer function. Ok, this may be relevant: https://dsp.stackexchange.com/questions/51695/is-there-a-way-to-obtain-the-transfer-function-from-a-bode-plot-on-python-i-kn