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A Robust Frequency Sampling Adaptive Notch Filter for Broadband Signals
Author(s) -
Kobayashi Masaki,
Nagasaka Yasunori
Publication year - 2014
Publication title -
electronics and communications in japan
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.131
H-Index - 13
eISSN - 1942-9541
pISSN - 1942-9533
DOI - 10.1002/ecj.11546
Subject(s) - band stop filter , adaptive filter , bandwidth (computing) , broadband , low pass filter , control theory (sociology) , reduction (mathematics) , prototype filter , filter (signal processing) , electronic engineering , mathematics , computer science , algorithm , engineering , telecommunications , artificial intelligence , geometry , control (management) , computer vision
SUMMARY An adaptive notch filter composed of an exponential type all‐pass circuit has stable and the robust characteristics for broadband signals. In this paper, we propose a method of reducing the number of adaptive parameters and the adaptive algorithm using a frequency sampling adaptive filter with reduction of the phase shift samples. It is shown that a reduction of an order of magnitude or more is possible by use of the properties of a notch filter with small bandwidth.