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MAHATA, S. HERENCSÁR, N. KUBÁNEK, D.
Originální název
On the Design of Power Law Filters and Their Inverse Counterparts
Typ
článek v časopise ve Web of Science, Jimp
Jazyk
angličtina
Originální abstrakt
This paper presents the optimal modeling of Power Law Filters (PLFs) with the low-pass (LP), high-pass (HP), band-pass (BP), and band-stop (BS) responses by means of rational approximants. The optimization is performed for three different objective functions and second-order filter mother functions. The formulated design constraints help avoid placement of the zeros and poles on the right-half s-plane, thus, yielding stable PLF and inverse PLF (IPLF) models. The performances of the approximants exhibiting the fractional-step magnitude and phase responses are evaluated using various statistical indices. At the cost of higher computational complexity, the proposed approach achieved improved accuracy with guaranteed stability when compared to the published literature. The four types of optimal PLFs and IPLFs with an exponent alpha of 0.5 are implemented using the follow-the-leader feedback topology employing AD844AN current feedback operational amplifiers. The experimental results demonstrate that the Total Harmonic Distortion achieved for all the practical PLF and IPLF circuits was equal or lower than 0.21%, whereas the Spurious-Free Dynamic Range also exceeded 57.23 and 54.72 dBc, respectively.
Klíčová slova
analog filter approximation; analog signal processing; fractional-order filter; inverse filter
Autoři
MAHATA, S.; HERENCSÁR, N.; KUBÁNEK, D.
Vydáno
4. 11. 2021
Nakladatel
MDPI
ISSN
2504-3110
Periodikum
Fractal and Fractional
Ročník
5
Číslo
4
Stát
Švýcarská konfederace
Strany od
1
Strany do
23
Strany počet
URL
https://www.mdpi.com/2504-3110/5/4/197
Plný text v Digitální knihovně
http://hdl.handle.net/11012/202251
BibTex
@article{BUT173062, author="Shibendu {Mahata} and Norbert {Herencsár} and David {Kubánek}", title="On the Design of Power Law Filters and Their Inverse Counterparts", journal="Fractal and Fractional", year="2021", volume="5", number="4", pages="1--23", doi="10.3390/fractalfract5040197", issn="2504-3110", url="https://www.mdpi.com/2504-3110/5/4/197" }