Title :
A design method for half-band FIR filters
Author :
Willson, A.N. ; Orchard, H.J.
Author_Institution :
Dept. of Electr. Eng., California Univ., Los Angeles, CA, USA
fDate :
1/1/1999 12:00:00 AM
Abstract :
Present methods for designing half-band filters use iterative approaches such as the well-known Parks-McClellan algorithm or some variant of linear programming. Here we give a direct method using Chebyshev polynomials, which provides a reduction in design time over previous methods by about a factor of ten. For all practical purposes the response of the resulting filter is equal-ripple in both passband and stopband. A listing of a Fortran program for carrying out the design is included
Keywords :
Chebyshev filters; FIR filters; band-pass filters; circuit CAD; digital filters; Chebyshev polynomials; Fortran program; design time; direct method; equal-ripple response; half-band FIR filters; passband; stopband; Algorithm design and analysis; Chebyshev approximation; Design methodology; Finite impulse response filter; Iterative algorithms; Iterative methods; Linear programming; Nonlinear filters; Passband; Polynomials;
Journal_Title :
Circuits and Systems I: Fundamental Theory and Applications, IEEE Transactions on
