Paper Info
Title
Design Of A Notch Filter With Improved Performance
Abstract
The frequency response of a constrained notch filter (CNF) of Rao and Kung or Nehorai becomes ideal as the pole-contraction factor alpha approaches unity while the transient duration approaches infinity. However, for practically useful values of alpha the phase and magnitude distortions so caused can reduce the allpass nature of the CNFs (i.e. the transparency property) and cause large errors. In this paper we define a measure for the transparency misadjustment and propose two suboptimal methods of minimizing these distortions. One of these methods is based on increasing the filter order by a strategic pole/zero placement. We present a closed-form solution for this method. In the second method we increase the order by manipulating the error filter associated with the standard CNF; the coefficients of the resulting filter are determined directly. An important feature of these methods is the significant improvement in the transient performance.
Year
DOI
Venue
1994
10.1002/cta.4490220406
INTERNATIONAL JOURNAL OF CIRCUIT THEORY AND APPLICATIONS
Field
DocType
Volume
Band-stop filter,Autoregressive–moving-average model,Frequency response,Root-raised-cosine filter,Control theory,Electronic engineering,Transfer function,Network analysis,All-pass filter,Mathematics,Filter design
Journal
22
Issue
ISSN
Citations 
4
0098-9886
2
PageRank 
References 
Authors
1.60
0
3
Name
Order
Citations
PageRank
R Agarwal113442.76
E. I. Plotkin2164.65
M. N. S. Swamy31037135.52