A description of band-pass fir filters with cancellation of DC and harmonic components

Shunsuke Koshita, Masahide Abe, Masayuki Kawamata, Takaaki Ohnari, Tomoyuki Kawasaki, Shogo Miura

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

Abstract

In many practical applications such as power systems, it is often required to realize a digital filter that passes the fundamental component and cancels the DC and harmonic components. This paper presents a new framework for designing band-pass FIR digital filters that meet this requirement. Under a constraint on the tap number and the fundamental frequency, the proposed method describes the desired filter coefficients in a simple sinusoidal function. The proposed filters have an advantage that the phase shift of the fundamental component in the input signal can be freely controlled by a parameter in the filter coefficients. In addition, we prove that the magnitude responses of the proposed filters become unity at the fundamental frequency, and zero at the DC and harmonic frequencies. Furthermore, we also show that the proposed filters are the special case of the well-known Wiener filter for enhancement of a sinusoid in white noise.

Original languageEnglish
Title of host publicationProceedings of 2014 4th IEEE International Conference on Network Infrastructure and Digital Content, IEEE IC-NIDC 2014
EditorsLin Zhang, Jun Guo, Xin Zhang, Jie Yang, Weining Wang
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages394-398
Number of pages5
ISBN (Electronic)9781479947362
DOIs
Publication statusPublished - 2014 Dec 30
Event2014 4th IEEE International Conference on Network Infrastructure and Digital Content, IEEE IC-NIDC 2014 - Beijing, China
Duration: 2014 Sep 192014 Sep 21

Publication series

NameProceedings of 2014 4th IEEE International Conference on Network Infrastructure and Digital Content, IEEE IC-NIDC 2014

Other

Other2014 4th IEEE International Conference on Network Infrastructure and Digital Content, IEEE IC-NIDC 2014
Country/TerritoryChina
CityBeijing
Period14/9/1914/9/21

Keywords

  • DC component
  • band-pass filter
  • fir digital filter
  • harmonic component
  • wiener filter

ASJC Scopus subject areas

  • Hardware and Architecture
  • Electrical and Electronic Engineering

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