Experiments on hum noise suppression using N-path notch filter

カテゴリ: 研究会(論文単位)

論文No: ECT18052

グループ名: 【C】電子・情報・システム部門 電子回路研究会

発行日: 2018/06/15

タイトル(英語): Experiments on hum noise suppression using N-path notch filter

著者名: キルダ アフィファ(芝浦工業大学),ムハマッド アリジャル(芝浦工業大学),ニコデムス レディアン(芝浦工業大学)

著者名(英語): Afifah Khilda(Shibaura Institute of Technology),Arijal Muhammad(Shibaura Institute of Technology),Retdian Nicodimus(Shibaura Institute of Technology)

キーワード: ハム雑音|Ｎパスフィルタ|ノッチフィルタ|hum noise|N-path filters|notch filters

要約(英語): Hum noise activity such as power line noise is one of critical problems in biomedical signals processing. Various approaches utilizing both analog and digital techniques have been proposed. However, these approaches have some disadvantages. This paper proposes the use of N-path notch filter as a hum noise filter. The notch depth in a conventional N-path notch filter is limitedby the number of path. A new N-path notch filter with additional sample-and-hold (S/H) and leak buffer circuit is proposed. Simulation results show that the additional leak buffer circuit improves the notch depth by 93dB with an off-resistance of 1GΩ.

原稿種別: 英語

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