A Fractional-Order Transitional Butterworth-Butterworth Filter and Its Experimental Validation

This paper introduces the generalization of the classical Transitional Butterworth-Butterworth Filter (TBBF) to the Fractional-Order (FO) domain. Stable rational approximants of the FO-TBBF are optimally realized. Several design examples demonstrate the robustness and modeling efficacy of the propos...

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Bibliographic Details
Published in:	IEEE access 2021, Vol.9, p.129521-129527
Main Authors:	Mahata, Shibendu, Herencsar, Norbert, Kubanek, David, Kar, Rajib, Mandal, Durbadal, Goknar, I. Cem
Format:	Article
Language:	eng
Subjects:	Analog filter approximation analog signal processing Analytical models Butterworth filters Circuits Current feedback amplifiers current feedback operational amplifier fractional-order filter Integrated circuit modeling Mathematical models Operational amplifiers Optimization Passband Transfer functions transitional filter
Online Access:	Get full text
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Summary:	This paper introduces the generalization of the classical Transitional Butterworth-Butterworth Filter (TBBF) to the Fractional-Order (FO) domain. Stable rational approximants of the FO-TBBF are optimally realized. Several design examples demonstrate the robustness and modeling efficacy of the proposed method. Practical circuit implementation using the current feedback operational amplifier employed as an active element is presented. Experimental results endorse good agreement ( \text {R}^{2} = 0.999968 ) with the theoretical magnitude-frequency characteristic.
ISSN:	2169-3536 2169-3536