Narrowband Notch Filter Using Feedback Structure Tips & Tricks
Journal
IEEE Signal Processing Magazine
Journal Volume
33
Journal Issue
3
Pages
115-118
Date Issued
2016-05
Author(s)
Abstract
The design of a notch filter poses challenges in managing the tradeoff between distortion in the passband and the notch band. The ideal notch filter has a 3-dB notch bandwidth (BW) equal to zero in the notch band and the unity gain in the passband. Therefore, the design objective is to shrink the BW as small as possible while preserving the gain as close to one as possible. The task of a notch filter is to eliminate interference while preserving the target broadband signal. These filters have many applications for narrowband interference removal in biomedical engineering [1], speech processing [2], image processing [3], [4], and communication [5].
Type
journal article