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A New Design Approach for Nearly Linear Phase Stable IIR Filter using Fractional Derivative

文献类型：期刊论文

作者Nikhil Agrawal; Anil Kumar; Varun Bajaj
刊名IEEE/CAA Journal of Automatica Sinica
出版日期2020
卷号7期号:2页码:527-538
关键词Fractional derivative constraint (FDC) infinite impulse response (IIR) filter least squared linear phase quantization
ISSN号2329-9266
DOI10.1109/JAS.2020.1003054
英文摘要In this paper, a new design method for digital infinite impulse response (IIR) filters with nearly linear-phase response is presented using fractional derivative constraints (FDCs). In the proposed method, design problem of an IIR filter is constructed as the minimization of phase error between the desired and designed phase response of an allpass filter (APF) such that the designed lowpass filter (LPF) or highpass filter (HPF) yields less passband (ep), and stopband errors (es) with optimal stopband attenuation (As). In order to have accurate passband (pb) response, FDCs are imposed on appropriate reference frequency, where the optimality of these FDCs are ensured by using a new greedy based sorting mechanism. The simulated results reflect the efficiency of the proposed method in term of improved passband response along with better transition width. However, small reduction in As is observed within the allowable limit, when compared to non-fractional design approach, but the designed filter remains immune to wordlength (WL) effect.
源URL[http://ir.ia.ac.cn/handle/173211/42961]  
专题自动化研究所_学术期刊_IEEE/CAA Journal of Automatica Sinica
推荐引用方式
GB/T 7714		 Nikhil Agrawal,Anil Kumar,Varun Bajaj. A New Design Approach for Nearly Linear Phase Stable IIR Filter using Fractional Derivative[J]. IEEE/CAA Journal of Automatica Sinica,2020,7(2):527-538.
APA Nikhil Agrawal,Anil Kumar,&Varun Bajaj.(2020).A New Design Approach for Nearly Linear Phase Stable IIR Filter using Fractional Derivative.IEEE/CAA Journal of Automatica Sinica,7(2),527-538.
MLA Nikhil Agrawal,et al."A New Design Approach for Nearly Linear Phase Stable IIR Filter using Fractional Derivative".IEEE/CAA Journal of Automatica Sinica 7.2(2020):527-538.

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来源：自动化研究所

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