Publication detail

Synthesis and Analysis of Electronically Adjustable Fractional-Order Low-Pass Filter

DVOŘÁK, J. LANGHAMMER, L. JEŘÁBEK, J. KOTON, J. ŠOTNER, R. POLÁK, J.

Original Title

Synthesis and Analysis of Electronically Adjustable Fractional-Order Low-Pass Filter

English Title

Synthesis and Analysis of Electronically Adjustable Fractional-Order Low-Pass Filter

Type

journal article in Web of Science

Language

en

Original Abstract

A proposal of a fractional (1+a)-order low-pass filter is presented in this paper. The proposed filter operates in the current-mode and it is designed using Multi-Output Current Followers (MO-CFs), Dual-Output Current Follower (DO-CF), Dual-Output Adjustable Current Amplifier (DO-ACA) and Adjustable Current Amplifiers (ACAs) as active elements within the presented topology of the filter. The filter possesses ability to electronically control its order and also the pole frequency by changing the current gain of current amplifiers (ACAs) already present in the structure. Three different values of the order and pole frequency of the proposed low-pass filter were tested as an example. Design of the proposed filter is supported by simulation and experimental results. Simulations of the circuit are carried out in PSPICE simulator with behavioural models of used active elements. The experimental laboratory measurements are performed with help of available devices forming equivalent circuits. Simulations and experimental results of the electronically control of the order and pole frequency are compared in this contribution.

English abstract

A proposal of a fractional (1+a)-order low-pass filter is presented in this paper. The proposed filter operates in the current-mode and it is designed using Multi-Output Current Followers (MO-CFs), Dual-Output Current Follower (DO-CF), Dual-Output Adjustable Current Amplifier (DO-ACA) and Adjustable Current Amplifiers (ACAs) as active elements within the presented topology of the filter. The filter possesses ability to electronically control its order and also the pole frequency by changing the current gain of current amplifiers (ACAs) already present in the structure. Three different values of the order and pole frequency of the proposed low-pass filter were tested as an example. Design of the proposed filter is supported by simulation and experimental results. Simulations of the circuit are carried out in PSPICE simulator with behavioural models of used active elements. The experimental laboratory measurements are performed with help of available devices forming equivalent circuits. Simulations and experimental results of the electronically control of the order and pole frequency are compared in this contribution.

Keywords

ACA; current-mode; DO-ACA; DO-CF; electronically tunable; fractional-order; low-pass filter; MO-CF.

Released

01.02.2018

Pages from

1850032-1

Pages to

1850032-18

Pages count

18

BibTex


@article{BUT137060,
  author="Jan {Dvořák} and Lukáš {Langhammer} and Jan {Jeřábek} and Jaroslav {Koton} and Roman {Šotner} and Josef {Polák}",
  title="Synthesis and Analysis of Electronically Adjustable Fractional-Order Low-Pass Filter",
  annote="A proposal of a fractional (1+a)-order low-pass filter is presented in this paper. The proposed filter operates in the current-mode and it is designed using Multi-Output Current Followers (MO-CFs), Dual-Output Current Follower (DO-CF), Dual-Output Adjustable Current Amplifier (DO-ACA) and Adjustable Current Amplifiers (ACAs) as active elements within the presented topology of the filter. The filter possesses ability to electronically control its order and also the pole frequency by changing the current gain of current amplifiers (ACAs) already present in the structure. Three different values of the order and pole frequency of the proposed low-pass filter were tested as an example. Design of the proposed filter is supported by simulation and experimental results. Simulations of the circuit are carried out in PSPICE simulator with behavioural models of used active elements. The experimental laboratory measurements are performed with help of available devices forming equivalent circuits. Simulations and experimental results of the electronically control of the order and pole frequency are compared in this contribution.",
  chapter="137060",
  doi="10.1142/S0218126618500329",
  howpublished="print",
  number="2",
  volume="27",
  year="2018",
  month="february",
  pages="1850032-1--1850032-18",
  type="journal article in Web of Science"
}