Title :
A method for the design of periodical notch filters
Author :
Yáñez-Macías, Juan J. ; Jovanovic-Dolecek, Gordana
Author_Institution :
Dept. of Electron., Instituto Nacional de Astrofisica, Opt. y Electron., Puebla, Mexico
Abstract :
The paper treats the design of periodical notch filters with a given fundamental frequency and a given notch bandwidth. The method used is based on the design of an allpass filter. The allpass filter is designed by solving a linear system of equations. This procedure reduces the complexity of the design and guarantees the precision on the rejected frequencies. Also presented is a method to improve the notch bandwidth characteristics of the periodical notch filter. Finally, it is shown that the resulting filter has a good behaviour when quantization is applied, if an adequate structure is used for the implementation.
Keywords :
all-pass filters; computational complexity; notch filters; quantisation (signal); allpass filter; fundamental frequency; notch bandwidth; notch bandwidth characteristics; periodical notch filter design; quantization; Astrophysics; Bandwidth; Cutoff frequency; Design methodology; Equations; Linear systems; Nonlinear filters; Optical design; Optical filters; Quantization;
Conference_Titel :
Electronics, Communications and Computers, 2004. CONIELECOMP 2004. 14th International Conference on
Print_ISBN :
0-7695-2074-X
DOI :
10.1109/ICECC.2004.1269555
