Multifunctional Electronically Reconfigurable and Tunable Fractional-Order Filter

Authors

  • Jan Dvorak
  • Jan Jerabek
  • Zuzana Polesakova
  • David Kubanek
  • Petr Blazek

DOI:

https://doi.org/10.5755/j01.eie.25.1.22732

Keywords:

Fractional-order element, Analogue filter, Quality factor control, Pole frequency control, DACA, OTA.

Abstract

In this paper the authors present a multifunctional reconfigurable fractional-order filter performing a low-pass, high-pass, band-pass and band-reject transfer function. The filter is based on two types of active elements, OTA (Operational Transconductance Amplifier) and ACA (Adjustable Current Amplifier). It provides pole frequency control, depending on the values of the transconductance of the OTA elements. The quality factor is also electronically controlled, depending on the amplification of the ACA element. The order of the filter can be changed by switching the fractional-order capacitor having various values of the order. The circuit was implemented as a PCB (Printed Circuit Board) and measured in laboratory conditions. Measurement results are compared with the simulation results. The behavioural models were used for the purpose of the simulation.

DOI: 10.5755/j01.eie.25.1.22732

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Published

2019-02-11

How to Cite

Dvorak, J., Jerabek, J., Polesakova, Z., Kubanek, D., & Blazek, P. (2019). Multifunctional Electronically Reconfigurable and Tunable Fractional-Order Filter. Elektronika Ir Elektrotechnika, 25(1), 26-30. https://doi.org/10.5755/j01.eie.25.1.22732

Issue

Vol. 25 No. 1 (2019)

Section

ELECTRONICS

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