Authors: Stojanović, Vidosav
Stanković, Miomir 
Title: Optimal fir filter for suppression of power line frequency component
Journal: International Journal of Electronics
Volume: 87
Issue: 5
First page: 569
Last page: 574
Issue Date: 1-Jan-2000
Rank: M23
ISSN: 00207217
DOI: 10.1080/002072100131995
In this paper a design technique for multiband FIR filter for DC and power line frequency component suppression is described. The digital filter has a linear phase characteristic and equiripple amplitude characteristic in the passband. The amplitude characteristic of this filter satisfies the alternation theorem and consequently has the lowest complexity in obtaining a prescribed maximum deviation in the passband and the fastest possible rate of attenuation near the cutoff frequency. In this sense this filter is optimal. Closed-form expressions for direct calculation of filter coefficients, cutoff frequency and maximal passband attenuation are derived. © 2000 Taylor and Francis Group, LLC.
Publisher: Taylor & Francis

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