Title :
Wideband IIR digital integrator and differentiator using curve fitting technique
Author :
Devate, Jayalaxmi ; Kulkarni, S.Y. ; Pai, K.R.
Author_Institution :
E& C Dept., MSRIT, Bangalore, India
Abstract :
In this paper, we propose an IIR design of wideband digital integrator and differentiator. We start our design with an IIR backward rectangular integrator. The response of the rectangular integrator is close to the ideal integrator only in the low frequency region. To improve the response, we connect an IIR filter in cascade with the backward integrator. The IIR filter is constructed using curve fitting toolbox of MATLAB as a ratio of two FIR functions. Integrator and differentiator thus obtained have response close to the ideal over entire Nyquist range of frequency with an error much less than what is reported in literature so far.
Keywords :
IIR filters; curve fitting; differentiating circuits; digital arithmetic; integrating circuits; FIR function ration; IIR backward rectangular integrator; IIR filter; Matlab; Nyquist frequency range; curve fitting technique; curve fitting toolbox; digital integrator differentiator; wideband IIR digital integrator; Polynomials; Wideband; Absolute percentage relative error; Curve fitting; Differentiator; IIR; Integrator; Magnitude Response;
Conference_Titel :
Signal Processing, Communication and Networking (ICSCN), 2015 3rd International Conference on
Conference_Location :
Chennai
Print_ISBN :
978-1-4673-6822-3
DOI :
10.1109/ICSCN.2015.7219845
