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Design of FIR first order digital differentiators of variable fractional sample delay using maximally flat error criterion

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2 Author(s)
Hermanowicz, E. ; Fac. of Electron., Tech. Univ. Gdansk ; Rojewski, M.

Optimum (in a maximally flat frequency response error sense) FIR digital differentiators of variable fractional sample delay are derived that calculate the derivative of an input uniformly sampled discrete-time signal with arbitrary centre frequency at an arbitrarily chosen instant of time within each sampling interval. The proposed class of differentiators includes maximally linear differentiators for low frequencies

Published in:

Electronics Letters  (Volume:30 ,  Issue: 1 )