Optimal Design of Linear-Phase FIR Digital Filters with Very Flat Passbands and Equiripple Stopbands
نویسنده
چکیده
Ahs~aet-A new technique is presented for the design of digital FIR filters, with a prescribed degree of flatness in the passband, and a prescribed (equiripple) attenuation in the stopband. The design is based entirely on an appropriate use of the well-known Rem&-exchange algorithm for the design of weighted Chebyshev FIR filters. The extreme versatility of this algorithm is combined with certain “maximally flat” FIR filter building blocks, in order to generate a wide family of filters. The design technique directly leads to structures that have low passband sensitivity properties.
منابع مشابه
Exchange Algorithms for the Design of Linear Phase Fir Filters and Diierentiators Having Flat Monotonic Passbands and Equiripple Stopbands List of Figures 5 Filter Structure for Implementation and Design of a Length N Lowpass Diierentiator
This paper describes a modiication of a technique proposed by Vaidyanathan for the design of lters having at passbands and equiripple stopbands. The modiication ensures that the passband is monotonic and does so without the use of concavity constraints. Another modi-cation described in this paper adapts the method of Vaidyanathan to the design of lowpass diierentiators having a speciied degree ...
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