Title :
Design of IIR multiple notch filters based on all-pass filters
Author :
Joshi, Yashwant V. ; Roy, S. C Dutta
Author_Institution :
Dept. of Electr. Eng., Indian Inst. of Technol., New Delhi, India
fDate :
2/1/1999 12:00:00 AM
Abstract :
A new method for the design of multiple notch fitters is presented using an all-pass filter of order 2N, N being the number of notch frequencies. The all-pass filter is realized as a cascade of N second-order all-pass sections. Besides meeting the notch frequency specifications exactly, the method ensures that the realized 3-dB bandwidths are lower than those specified. Illustrative examples are given
Keywords :
IIR filters; all-pass filters; cascade networks; network synthesis; notch filters; IIR multiple notch filter; all-pass filter; bandwidths; design; notch frequency specifications; second-order all-pass section cascade; Bandwidth; Cutoff frequency; Design methodology; Digital filters; Finite impulse response filter; IIR filters; Interference; Narrowband; Nonlinear filters; Power harmonic filters;
Journal_Title :
Circuits and Systems II: Analog and Digital Signal Processing, IEEE Transactions on
