DESIGN OF MULTIRATE BANDPASS DIGITAL FILTERS WITH COMPLEX COEFFICIENTS.

Masaaki Ikehara, Shinichi Takahashi

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

The multirate digital filter is useful in realizing narrowband characteristics because multiplication can be reduced by using different sampling frequencies, at the same time reducing the order of the filter to be realized. This paper introduces the complex coefficient into the traditional design of the low-pass multirate filter. The construction method is proposed for the multirate bandpass digital filter with complex coefficients. By employing the multistage cascade structure, the number of multiplications and the memory capacity for coefficients can be reduced greatly. Then a new design method for the complex-coefficient filter is proposed based on the properties of the analytic signal. The discussion in this paper applies to both FIR and IIR filters.

Original languageEnglish
Pages (from-to)21-29
Number of pages9
JournalElectronics and Communications in Japan, Part I: Communications (English translation of Denshi Tsushin Gakkai Ronbunshi)
Volume71
Issue number1
Publication statusPublished - 1988 Jan

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Digital filters
Bandpass filters
IIR filters
FIR filters
Low pass filters
Sampling
Data storage equipment

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Electrical and Electronic Engineering

Cite this

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