Published:2011/6/20 6:20:00 Author:John | Keyword: Band stop filter, notch filter | From:SeekIC
Band stop filter is a kind of band-stop filter with high Q value (referring to the narrow bandwidth). They are designed to filter out a single frequency signal. More precisely, they are to filter out a narrow-band signal around a center frequency.
Band stop filter is used to eliminate interference of a single frequency. For example, when you are close to a FM radio station, you will find that the signals cover a large area in this band or appear on a number of frequency points in this band.
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