Publication detail
Electronically tunable pseudocapacitance for fractional-order (α=0.25) passive element
ŠOTNER, R. COLBURN, S. JEŘÁBEK, J. POLÁK, L. FREEBORN, T.
Original Title
Electronically tunable pseudocapacitance for fractional-order (α=0.25) passive element
Type
journal article in Web of Science
Language
English
Original Abstract
A novel device based on component substitution is presented to realize a fractional-order (alpha = 0.25) passive element with electronically tunable pseudocapacitance. Tuning is achieved using a single bias voltage applied to optocouplers operating as variable resistance elements. Experimental measurements of a fabricated device demonstrate pseudocapacitance from 46 mu F/sec3/4 to 464 mu F/sec3/4 using a bias voltage from 3 V to 20 V. The constant phase behavior with +/- 2.5 degrees variation over three decades of frequency (up to 1 MHz) is demonstrated. The practical application example implements variable pseudocapacitance in electronically adjustable integrator.
Keywords
Constant phase element; Fractional capacitor; Fractional-order; Electronic tuning; Pseudocapacitance
Authors
ŠOTNER, R.; COLBURN, S.; JEŘÁBEK, J.; POLÁK, L.; FREEBORN, T.
Released
30. 4. 2025
Publisher
ELSEVIER SCI LTD
Location
London
ISBN
1873-412X
Periodical
MEASUREMENT
Year of study
253
Number
1
State
United Kingdom of Great Britain and Northern Ireland
Pages from
1
Pages to
11
Pages count
11
URL
BibTex
@article{BUT198018,
author="Roman {Šotner} and Simon {Colburn} and Jan {Jeřábek} and Ladislav {Polák} and Todd {Freeborn}",
title="Electronically tunable pseudocapacitance for fractional-order (α=0.25) passive element",
journal="MEASUREMENT",
year="2025",
volume="253",
number="1",
pages="11",
doi="10.1016/j.measurement.2025.117681",
issn="1873-412X",
url="https://www.sciencedirect.com/science/article/pii/S0263224125010401"
}