Publication detail

Electronically Tunable Fully-Differential Fractional-Order Low-Pass Filter

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

Original Title

Electronically Tunable Fully-Differential Fractional-Order Low-Pass Filter

English Title

Electronically Tunable Fully-Differential Fractional-Order Low-Pass Filter

Type

journal article in Web of Science

Language

en

Original Abstract

The paper presents proposal of a fully- differential (1 + α)-order low-pass filter. The order of the filter and its cut-off frequency can be controlled electronically. The filter is proposed using operational transconductance amplifiers (OTAs), adjustable current amplifiers (ACAs) and fully-differential current follower (FD-CF). The circuit structure is based on well-known Inverse Follow-the-Leader Feedback (IFLF) topology. Design correctness of the proposed filter is supported by PSpice simulations with transistor-level simulation models. The ability of the electronic control of the order has been tested for five individual values of parameter α. Furthermore, the ability of the electronic control of the cut-off frequency of the filter has been also tested for five different values. Additionally, the simulation results of the proposed fully-differential (F-D) filter are compared with the results of the single-ended (S-E) equivalent of the presented filter.

English abstract

The paper presents proposal of a fully- differential (1 + α)-order low-pass filter. The order of the filter and its cut-off frequency can be controlled electronically. The filter is proposed using operational transconductance amplifiers (OTAs), adjustable current amplifiers (ACAs) and fully-differential current follower (FD-CF). The circuit structure is based on well-known Inverse Follow-the-Leader Feedback (IFLF) topology. Design correctness of the proposed filter is supported by PSpice simulations with transistor-level simulation models. The ability of the electronic control of the order has been tested for five individual values of parameter α. Furthermore, the ability of the electronic control of the cut-off frequency of the filter has been also tested for five different values. Additionally, the simulation results of the proposed fully-differential (F-D) filter are compared with the results of the single-ended (S-E) equivalent of the presented filter.

Keywords

Active filter; fractional-order; frequency control; low-pass filter

Released

16.06.2017

Location

Kaunas, Litva

Pages from

47

Pages to

54

Pages count

8

BibTex


@article{BUT137100,
  author="Lukáš {Langhammer} and Jan {Dvořák} and Roman {Šotner} and Jan {Jeřábek}",
  title="Electronically Tunable Fully-Differential Fractional-Order Low-Pass Filter",
  annote="The paper presents proposal of a fully- differential (1 + α)-order low-pass filter. The order of the filter and its cut-off frequency can be controlled electronically. The filter is proposed using operational transconductance amplifiers (OTAs), adjustable current amplifiers (ACAs) and fully-differential current follower (FD-CF). The circuit structure is based on well-known Inverse Follow-the-Leader Feedback (IFLF) topology. Design correctness of the proposed filter is supported by PSpice simulations with transistor-level simulation models. The ability of the electronic control of the order has been tested for five individual values of parameter α. Furthermore, the ability of the electronic control of the cut-off frequency of the filter has been also tested for five different values. Additionally, the simulation results of the proposed fully-differential (F-D) filter are compared with the results of the single-ended (S-E) equivalent of the presented filter.",
  chapter="137100",
  doi="10.5755/j01.eie.23.3.18332",
  howpublished="online",
  number="3",
  volume="23",
  year="2017",
  month="june",
  pages="47--54",
  type="journal article in Web of Science"
}