Publication result detail

Fully-Differential Tunable Fractional-Order Filter with Current Followers and Current Amplifiers

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

Original Title

Fully-Differential Tunable Fractional-Order Filter with Current Followers and Current Amplifiers

English Title

Fully-Differential Tunable Fractional-Order Filter with Current Followers and Current Amplifiers

Type

Paper in proceedings (conference paper)

Original Abstract

The paper presents proposal of a fully-differential fractional (1+α)-order low-pass filter. The filter operates in the current mode. It is based on the well-known follow-the-leader feedback (FLF) topology of the the 3rd-order filtering structure utilizing fully-differential current followers (FD-CFs) and adjustable current amplifiers (ACAs), in our case, in order to approximate fractional-order low-pass filter response in particular frequency band of interest. The design correctness and proper function of the proposed filter are supported by PSpice simulations. The filter provides ability to electronically control its order in range from 1 to 2 and also offers the electronic control of the cut-off frequency. These features were tested for three different values in case of the control of the order and three different values in case of the control of the cut-off frequency.

English abstract

The paper presents proposal of a fully-differential fractional (1+α)-order low-pass filter. The filter operates in the current mode. It is based on the well-known follow-the-leader feedback (FLF) topology of the the 3rd-order filtering structure utilizing fully-differential current followers (FD-CFs) and adjustable current amplifiers (ACAs), in our case, in order to approximate fractional-order low-pass filter response in particular frequency band of interest. The design correctness and proper function of the proposed filter are supported by PSpice simulations. The filter provides ability to electronically control its order in range from 1 to 2 and also offers the electronic control of the cut-off frequency. These features were tested for three different values in case of the control of the order and three different values in case of the control of the cut-off frequency.

Keywords

adjustable current amplifier; current-mode; current follower; fractional-order; fully-differential; low-pass filter

Key words in English

adjustable current amplifier; current-mode; current follower; fractional-order; fully-differential; low-pass filter

Authors

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

RIV year

2018

Released

21.04.2017

Publisher

IEEE

Location

Brno

ISBN

978-1-5090-4591-4

Book

Proceedings of 27th International Conference Radioelektronika 2017

Pages from

102

Pages to

107

Pages count

6

URL

https://ieeexplore.ieee.org/document/7937576

BibTex

@inproceedings{BUT135092,
  author="Lukáš {Langhammer} and Roman {Šotner} and Jan {Dvořák} and Jan {Jeřábek} and Josef {Polák}",
  title="Fully-Differential Tunable Fractional-Order Filter with Current Followers and Current Amplifiers",
  booktitle="Proceedings of 27th International Conference Radioelektronika 2017",
  year="2017",
  pages="102--107",
  publisher="IEEE",
  address="Brno",
  doi="10.1109/RADIOELEK.2017.7937576",
  isbn="978-1-5090-4591-4",
  url="https://ieeexplore.ieee.org/document/7937576"
}