Title :
Design of digital FIR filters with arbitrary notch frequencies using the Chebyshev function
Author :
Soltis, James J. ; Khasnabish, Bhumip ; Ahmadi, Majid
Author_Institution :
Dept. of Electr. Eng., Windsor Univ., Ont., Canada
Abstract :
An analytical method for designing digital FIR filters is presented which equates the filter transfer function to a function of the nth order Chebyshev polynomial, cn(arg). By proper development of arg, a purely digital function, equiripple passband filters with user-specified notch frequencies can be designed. Examples are given to illustrate the utility of the technique
Keywords :
Chebyshev approximation; band-pass filters; digital filters; filtering and prediction theory; low-pass filters; notch filters; poles and zeros; polynomials; transfer functions; Chebyshev function; Chebyshev polynomial; analytical method; arbitrary notch frequencies; digital FIR filters; equiripple passband filters; filter transfer function; user-specified notch frequencies; Chebyshev approximation; Digital communication; Digital filters; Finite impulse response filter; Frequency domain analysis; Frequency response; Low pass filters; Passband; Sampling methods; Transfer functions;
Conference_Titel :
Circuits and Systems, 1990., Proceedings of the 33rd Midwest Symposium on
Conference_Location :
Calgary, Alta.
Print_ISBN :
0-7803-0081-5
DOI :
10.1109/MWSCAS.1990.140907
