Publication detail

Electronically Adjustable Emulator of the Fractional-Order Capacitor

DVOŘÁK, J. KUBÁNEK, D. HERENCSÁR, N. KARTCI, A. BERTSIAS, P.

Original Title

Electronically Adjustable Emulator of the Fractional-Order Capacitor

English Title

Electronically Adjustable Emulator of the Fractional-Order Capacitor

Type

journal article in Web of Science

Language

en

Original Abstract

This paper presents a design of the controllable emulator of the FOC (Fractional-Order Capacitor) and its application. The circuit is based on 5th-order RC topology (type Foster I) where the passive elements in the topology are replaced by electronically adjustable components. The proposed emulator is based on OTA (Operational Transconductance Amplifier) and VDCC (Voltage Differencing Current Conveyor). The electronically controllable resistors are implemented by OTAs. The electronically tunable capacitors are implemented using capacitance multipliers, which employ VDCCs. The proposed structure provides the electronic control of the order and electronic shifting of the frequency band of the approximation validity. The proposed FOC emulator is also used for fractional-order filter design. The proposed circuits are verified using PSpice simulations.

English abstract

This paper presents a design of the controllable emulator of the FOC (Fractional-Order Capacitor) and its application. The circuit is based on 5th-order RC topology (type Foster I) where the passive elements in the topology are replaced by electronically adjustable components. The proposed emulator is based on OTA (Operational Transconductance Amplifier) and VDCC (Voltage Differencing Current Conveyor). The electronically controllable resistors are implemented by OTAs. The electronically tunable capacitors are implemented using capacitance multipliers, which employ VDCCs. The proposed structure provides the electronic control of the order and electronic shifting of the frequency band of the approximation validity. The proposed FOC emulator is also used for fractional-order filter design. The proposed circuits are verified using PSpice simulations.

Keywords

Fractional-order element, fractional-order capacitor, Foster I, RC ladder, fractional-order filter

Released

12.12.2019

Publisher

Kaunas University of Technology

Location

Kaunas - Litva

Pages from

28

Pages to

34

Pages count

7

URL

Full text in the Digital Library

BibTex


@article{BUT156525,
  author="Jan {Dvořák} and David {Kubánek} and Norbert {Herencsár} and Aslihan {Kartci} and Panagiotis {Bertsias}",
  title="Electronically Adjustable Emulator of the Fractional-Order Capacitor",
  annote="This paper presents a design of the controllable emulator of the FOC (Fractional-Order Capacitor) and its application. The circuit is based on 5th-order RC topology (type Foster I) where the passive elements in the topology are replaced by electronically adjustable components. The proposed emulator is based on OTA (Operational Transconductance Amplifier) and VDCC (Voltage Differencing Current Conveyor). The electronically controllable resistors are implemented by OTAs. The electronically tunable capacitors are implemented using capacitance multipliers, which employ VDCCs. The proposed structure provides the electronic control of the order and electronic shifting of the frequency band of the approximation validity. The proposed FOC emulator is also used for fractional-order filter design. The proposed circuits are verified using PSpice simulations.",
  address="Kaunas University of Technology",
  chapter="156525",
  doi="10.5755/j01.eie.25.6.24823",
  howpublished="online",
  institution="Kaunas University of Technology",
  number="6",
  volume="25",
  year="2019",
  month="december",
  pages="28--34",
  publisher="Kaunas University of Technology",
  type="journal article in Web of Science"
}