A method is proposed for the design of infinite-duration impulse response (IIR) notch filters with different passband gains using the standard lowpass IIR digital-filter design methods. This method satisfies the notch-frequency specification exactly and realises a rejection bandwidth, defined by the frequencies at which the gain is 3 dB below the lower of the two passband gains, which is smaller than that specified. Illustrative examples are given.


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    Title :

    Design of IIR notch filters with different passband gains


    Contributors:

    Publication date :

    1998-02-01


    Size :

    5 pages



    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English





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