NDLI: Bandpass and bandstop recursive filters with low sensitivity

Content Provider	IEEE Xplore Digital Library
Author	Bhattacharya, M. Agarwal, R. Roy, S.D.
Copyright Year	1974
Abstract	In a sharp cutoff bandpass or bandstop recursive digital filter, the poles and zeros are expected to be clustered around the band edges, and in close proximity of the unit circle in the z-plane. Implementation of such filters with low sensitivity could be achieved by cascading second-order sections, with appropriate low sensitivity structures chosen for individual sections depending on the locations of the poles. An alternative approach for design and implementation of band-pass/bandstop filter with low sensitivity is shown to be based on transformation of sensitivity characteristics of a low sensitivity structure to appropriate angular regions on the unit circle. A fourth-order section of such a filter is realized with a level of sensitivity which is the same as that of the prototype second-order low-pass filter section realized with low sensitivity and with reduced number of multiplications. A few transformations along with their respective structures for transforming a prototype low-pass filter are given.
Starting Page	1485
Ending Page	1492
Page Count	8
File Size	773718
File Format	PDF
ISSN	00963518
Volume Number	34
Issue Number	6
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1986-12-01
Publisher Place	U.S.A.
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Band pass filters Low pass filters Digital filters Prototypes Poles and zeros Quantization Radar Cities and towns Algorithm design and analysis Signal processing algorithms
Content Type	Text
Resource Type	Article
Subject	Signal Processing

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