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LANGHAMMER, L. ŠOTNER, R. DVOŘÁK, J. JEŘÁBEK, J. POLÁK, J.
Original Title
Fully-Differential Tunable Fractional-Order Filter with Current Followers and Current Amplifiers
Type
conference paper
Language
English
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.
Keywords
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.
Released
21. 4. 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" }