Electronically Tunable Multifunction Transadmittance-Mode Fractional-Order Filter

In this paper a multifunction transadmittance-mode fractional-order filter is proposed for the very first time. The proposed structure provides fractional-order low-pass filter, fractional-order high-pass filter and fractional-order all-pass filter. It uses two operational transconductance amplifier...

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Bibliographic Details
Published in:Arabian journal for science and engineering (2011) 2021-02, Vol.46 (2), p.1067-1078
Main Authors: Varshney, Garima, Pandey, Neeta, Pandey, Rajeshwari
Format: Article
Language:English
Subjects:
Capacitors
Circuits
CMOS
Engineering
High pass filters
Humanities and Social Sciences
Low pass filters
multidisciplinary
Operational amplifiers
Parameter sensitivity
Research Article-Electrical Engineering
Science
Technology transfer
Transconductance
Transfer functions
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Summary:In this paper a multifunction transadmittance-mode fractional-order filter is proposed for the very first time. The proposed structure provides fractional-order low-pass filter, fractional-order high-pass filter and fractional-order all-pass filter. It uses two operational transconductance amplifier and one fractional capacitor (FC). The FC is realized using the twelfth-order continued fraction expansion-based RC ladder. Functional verification of proposed fractional-order filter is verified through PSPICE using 180-nm CMOS technology model parameters. The transfer functions sensitivities’ with respect to various circuit parameters are examined through simulations. The effect of parameter variation on filter responses is studied using Monte Carlo analysis. Furthermore, the proposed filter possess electronic tunability through bias currents. Moreover, the circuit is tested experimentally using discrete components to realize the fractional-order capacitor showing great matching with the theoretical data.
ISSN:2193-567X
1319-8025
2191-4281
DOI:10.1007/s13369-020-04841-8