An Efficient Technique for the design of Maximally flat Zero-phase Digital Filters with wideband response
Joonhyeon Jeon · ITC-CSCC :International Technical Conference on Circuits Systems, Computers and Communications · 2007
In this paper, we propose an efficient technique for the design of zero-phase wideband maximally flat lowpass FIR filters with the stopband attenuation exceeding 300 ㏈ almost everywhere. The technique is based on a wideband closed-form transfer function with real and even impulse response and is realized due to generalized-coefficient formulas derived by maximally flat constraints including an arbitrary cutoff point.