Electronically Adjustable Emulator of the Fractional-Order Capacitor

Authors

  • Jan Dvorak
  • David Kubanek
  • Norbert Herencsar
  • Aslihan Kartci
  • Panagiotis Bertsias

DOI:

https://doi.org/10.5755/j01.eie.25.6.24823

Keywords:

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

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.

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Published

2019-12-06

How to Cite

Dvorak, J. ., Kubanek, D. ., Herencsar, N. ., Kartci, A. ., & Bertsias, P. . (2019). Electronically Adjustable Emulator of the Fractional-Order Capacitor. Elektronika Ir Elektrotechnika, 25(6), 28-34. https://doi.org/10.5755/j01.eie.25.6.24823

Issue

Vol. 25 No. 6 (2019)

Section

ELECTRONICS

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