Publication result detail

Non-Integer-Order Low-Pass Filter with Electronically Controllable Parameters

DVOŘÁK, J.; POLEŠÁKOVÁ, Z.; JEŘÁBEK, J.; LANGHAMMER, L.; KARTCI, A.; KOTON, J.

Original Title

Non-Integer-Order Low-Pass Filter with Electronically Controllable Parameters

English Title

Non-Integer-Order Low-Pass Filter with Electronically Controllable Parameters

Type

Paper in proceedings (conference paper)

Original Abstract

In this paper, a new non-integer-order (fractionalorder) low-pass filter with independent electronic control of the order, quality factor and pole frequency is presented. The filter operates in the current mode and it consists of Operational Transconductance Amplifiers (OTAs) and Adjustable Current Followers (ACAs) employed as active elements. The values of noninteger order, quality factor and pole frequency of the filter are controlled by the internal and electronically controllable parameters of the used active elements (transconductance, current gain in our case). The proposed filter allows tunability of the pole frequency in range from 43.0 to 364.0 kHz. The filter order is controlled from 1.17 to 1.75 and finally it provides possibility to control quality factor from 0.64 to 1.9. Features of the proposed circuit are verified by PSpice simulations using transistor-level simulation models of the active elements.

English abstract

In this paper, a new non-integer-order (fractionalorder) low-pass filter with independent electronic control of the order, quality factor and pole frequency is presented. The filter operates in the current mode and it consists of Operational Transconductance Amplifiers (OTAs) and Adjustable Current Followers (ACAs) employed as active elements. The values of noninteger order, quality factor and pole frequency of the filter are controlled by the internal and electronically controllable parameters of the used active elements (transconductance, current gain in our case). The proposed filter allows tunability of the pole frequency in range from 43.0 to 364.0 kHz. The filter order is controlled from 1.17 to 1.75 and finally it provides possibility to control quality factor from 0.64 to 1.9. Features of the proposed circuit are verified by PSpice simulations using transistor-level simulation models of the active elements.

Keywords

adjustable current amplifier; fractional-order; frequency filter; low-pass

Key words in English

adjustable current amplifier; fractional-order; frequency filter; low-pass

Authors

DVOŘÁK, J.; POLEŠÁKOVÁ, Z.; JEŘÁBEK, J.; LANGHAMMER, L.; KARTCI, A.; KOTON, J.

RIV year

2019

Released

04.05.2018

Location

Itálie-Florencie

ISBN

978-1-5386-4881-0

Book

2018 IEEE International Symposium on Circuits and Systems (ISCAS)

Pages from

1

Pages to

5

Pages count

5

BibTex

@inproceedings{BUT145372,
  author="Jan {Dvořák} and Zuzana {Bečková} and Jan {Jeřábek} and Lukáš {Langhammer} and Aslihan {Kartci} and Jaroslav {Koton}",
  title="Non-Integer-Order Low-Pass Filter with Electronically Controllable Parameters",
  booktitle="2018 IEEE International Symposium on Circuits and Systems (ISCAS)",
  year="2018",
  pages="1--5",
  address="Itálie-Florencie",
  doi="10.1109/ISCAS.2018.8351488",
  isbn="978-1-5386-4881-0"
}