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

doi:10.1109/JAS.2020.1003054

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	A New Design Approach for Nearly Linear Phase Stable IIR Filter using Fractional Derivative
	Nikhil Agrawal; Anil Kumar; Varun Bajaj
刊名	IEEE/CAA Journal of Automatica Sinica
	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
DOI	10.1109/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 (e_p), and stopband errors (e_s) with optimal stopband attenuation (A_s). 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 A_s is observed within the allowable limit, when compared to non-fractional design approach, but the designed filter remains immune to wordlength (WL) effect.
内容类型	期刊论文
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.