Experiment of 3-Phase N-path Filter for Hum Noise Suppression

Khilda Afifah, Retdian Nicodimus, Muhammad Arijal, Takeshi Shima

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

One of a critical problem in the biomedical signals measurements is hum noise activity due to power line interference. Various approaches to suppress hum noise both analog and digital techniques have been proposed. However, these approaches have some disadvantages. N-path notch filter can be an alternative solution for this problem. The notch depth in a conventional N-path notch filter is limited by the number of paths to achieve deeper notch. This paper proposes a new N-path notch filter with additional sample-and-hold (S/H) and leak buffer circuits to improve notch depth. Simulation and measurement results of 3-phase N-path filter achieve notch depth of 61.6dB and 54.5dB respectively.

Original languageEnglish
Title of host publication2019 IEEE International Symposium on Circuits and Systems, ISCAS 2019 - Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781728103976
DOIs
Publication statusPublished - 2019 Jan 1
Event2019 IEEE International Symposium on Circuits and Systems, ISCAS 2019 - Sapporo, Japan
Duration: 2019 May 262019 May 29

Publication series

NameProceedings - IEEE International Symposium on Circuits and Systems
Volume2019-May
ISSN (Print)0271-4310

Conference

Conference2019 IEEE International Symposium on Circuits and Systems, ISCAS 2019
CountryJapan
CitySapporo
Period19/5/2619/5/29

Keywords

  • EEG
  • Hum noise suppression
  • N-path notch filter

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

Fingerprint Dive into the research topics of 'Experiment of 3-Phase N-path Filter for Hum Noise Suppression'. Together they form a unique fingerprint.

  • Cite this

    Afifah, K., Nicodimus, R., Arijal, M., & Shima, T. (2019). Experiment of 3-Phase N-path Filter for Hum Noise Suppression. In 2019 IEEE International Symposium on Circuits and Systems, ISCAS 2019 - Proceedings [8702340] (Proceedings - IEEE International Symposium on Circuits and Systems; Vol. 2019-May). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ISCAS.2019.8702340