Design method of FIR digital filters with arbitrary passband by using interpolation techniques

K. Kitamura, M. Ikehara, S. Takahashi

    研究成果: Conference article査読

    抄録

    We propose a new design method for FIR digital filters with arbitrary passband by using interpolation techniques. Interpolated FIR (IFIR) filters have a sparse impulse response with every Lth sample being nonzero and can be implemented by replacing each delay of an original filter with L delays. We call L the interpolation ratio. L is an integer. Then the frequency band is reduced to 1/L. To implement a desired passband, the IFIR filter requires only 1/L multipliers of the direct form FIR digital filter. Using this method it is possible to implement a narrowband filter with fewer than 30 percent multipliers of the direct form, and a wideband lowpass filter with fewer than 40 percent multipliers.

    本文言語English
    ページ(範囲)6-10
    ページ数5
    ジャーナルIEE Conference Publication
    308
    出版ステータスPublished - 1989 12 1
    イベントEuropean Conference on Circuit Theory and Design - Brighton, Engl
    継続期間: 1989 9 51989 9 8

    ASJC Scopus subject areas

    • 電子工学および電気工学

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