Equiripple-Stopband Multiplierless FIR Filters by
Chebyshev Sharpening of Two-Sample Averaging
- J. O. Coleman
Odd-length linear-phase prototype FIR filters were
recently sharpened with scaled Chebyshev polynomials.
Here the approach is extended to even-length
prototypes and applied to a two-tap averaging filter,
and passband normalization in either case is greatly
improved for wide-stopband designs. This paper also
presents an alternate sharpened-filter structure
suitable for decimation or interpolation filtering or
for antenna-array weighting. Either structure can
generally be made multiplierless.
- ONLINE VERSION:
preprint (372 kbytes)
- Accepted for presentation at the 2018 2018 IEEE Int'l Symp. on Circuits and
Systems (ISCAS 2018), Florence, Italy, May 27-30, 2018.
- DATE OF ENTRY: