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Analysis and investigation of CDBA based fractional-order filters

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Abstract

In this work, a new design of continuous time current differencing buffered amplifier based low-pass, high-pass, band-pass, all-pass and notch fractional-order filters is reported. The design of proposed filters is based on the approximation of fractional-order filters by using an appropriate integer order transfer function. Signal flow graph approach is used for the realization of fractional-order filters of order (1 + α). The frequency responses of the proposed circuits are verified using MATLAB in conjunction with SPICE. The evaluation of the realized fractional-order filters are also performed through the AC analysis and corner analysis. Furthermore, stability and sensitivity investigations are also investigated. It is observed from the simulation results that the fractional-order filters are appropriate for IC implementation.

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Authors and Affiliations

  1. Department of Electrical Engineering, Jamia Millia Islamia, New Delhi, Delhi, India

    Gagandeep Kaur & Abdul Quaiyum Ansari

  2. Department of Electrical and Computer Engineering, Nazarbayev University, Nur-Sultan, Kazakhstan

    M. S. Hashmi

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  1. Gagandeep Kaur
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  3. M. S. Hashmi
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Correspondence to Gagandeep Kaur.

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Kaur, G., Ansari, A.Q. & Hashmi, M.S. Analysis and investigation of CDBA based fractional-order filters. Analog Integr Circ Sig Process 105, 111–124 (2020). https://doi.org/10.1007/s10470-020-01683-0

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