Maximally Flat Lowpass Digital Differentiators

Abstract This paper describes the design of Type III and Type IV linear-phase FIR lowpass digital differentiators according to the maximally flat criterion. We introduce a two-term recursive formula that enables the simple stable computation of the impulse response coefficients. The same recursive formula is valid for both Type III and Type IV solutions.

IEEE Transactions on Circuits and Systems - II: Analog and Digital Signal Processing, Vol 49, No 3, pp 219-223, March 2002.

Download the reprint: lowdiff.pdf or lowdiff_IEEE.pdf

Matlab program

Frequency responses for different parameters

frequency response figure.

frequency response figure.

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