This Paper Appeared in the Proceedings of the 1998 Ieee International Sympo- Sium on Circuits and Systems, Monterey, California, May 31 - June 3, 1998. M-th Band Filter Design Based on Cosine Modulation
نویسندگان
چکیده
This paper presents a design method for linear phase filter with arbitrary cutoff frequencies using cosine modulation. The approach can be applied to any existing linear phase filters with rational cutoff frequencies. Halfband filter is used to derive approximately maximally-flat filter with different cutoff frequencies, and the resulting filter can be expressed in closed form when the original filter has closed form expression. The filters satisfy M -th band conditions with comparable transition band to the original filter. Simulations are presented to confirm the design method.
منابع مشابه
This Paper Appeared in the Proceedings of the 1999 Ieee International Sympo- Sium on Circuits and Systems, Orlando, Florida, May 30 - June 2,1999. a New Method in Fir Filter Design
Recently a method in FIR filter design using cosine modulation was proposed. Given a prototype M -th band lowpass filter with cutoff frequency at π M , one can obtain a new filter with comparable frequency characteristics with rational cutoff frequency. In this paper, we extend the theory to the case of arbitrary cutoff frequency. The resulting method is corresponding to finding the equivalent ...
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