Publication detail

Novel Second-Order Transfer Section for Frequency-Selective Response Generation in Comb Filters

ŠOTNER, R. SEMENOV, D. ANDRIUKAITIS, D. SVOBODA, M. POLÁK, L.

Original Title

Novel Second-Order Transfer Section for Frequency-Selective Response Generation in Comb Filters

Type

journal article in Web of Science

Language

English

Original Abstract

This article introduces a novel unified second-order filtering topology for standard band-reject (sBR) and inverting band-reject filter, enabling selective response generation. It is applied in the design of special comb filters that allow attenuation as well as amplification of specific bands. The presented solution offers several advantageous features in topology, enhanced cascadability, better parameter-setting performance, and the use of readily available off-the-shelf components, all while reducing overall costs. This is a significant improvement compared to the previous solutions in this field, which relied on a very expensive CMOS process. The topology employs a combination of an operational transconductance amplifier (OTA) and a current feedback amplifier. The intended center frequencies and transfer values of the comb filter are set to 50 Hz (-20 dB), 1 kHz (+26 dB), 10 kHz (+17 dB), and 100 kHz (-30 dB). The comb filter was experimentally verified via simulations as well as laboratory measurements utilizing LT1228 devices in a fabricated prototype.

Keywords

Comb filters; Semiconductor device modeling; Band-pass filters; Resonator filters; Transconductance; Electrocardiography; Standards; Topology; Sensors; Attenuation; Band-reject filter; comb filter; current feedback amplifier; inverse filter; notch; operational transconductance amplifier (OTA)

Authors

ŠOTNER, R.; SEMENOV, D.; ANDRIUKAITIS, D.; SVOBODA, M.; POLÁK, L.

Released

7. 3. 2025

Publisher

IEEE

Location

PISCATAWAY

ISBN

0018-9456

Periodical

IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT

Year of study

74

Number

3

State

United States of America

Pages from

1

Pages to

9

Pages count

9

URL

https://ieeexplore.ieee.org/abstract/document/10916844

Full text in the Digital Library

http://hdl.handle.net/11012/250892

BibTex

@article{BUT197636,
  author="Roman {Šotner} and Dmitrii {Semenov} and Darius {Andriukaitis} and Marek {Svoboda} and Ladislav {Polák}",
  title="Novel Second-Order Transfer Section for Frequency-Selective Response Generation in Comb Filters",
  journal="IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT",
  year="2025",
  volume="74",
  number="3",
  pages="9",
  doi="10.1109/TIM.2025.3548818",
  issn="0018-9456",
  url="https://ieeexplore.ieee.org/abstract/document/10916844"
}