Non-integer-order exponential filters: definitions in the time-domain and frequency-domain

作     者：Nako, Julia Psychalinos, Costas Elwakil, Ahmed S. 

作者机构：Univ Patras Dept Phys Elect Lab GR-26504 Rion Greece Univ Sharjah Dept Elect Engn POB 27272 Sharjah U Arab Emirates Univ Calgary Dept Elect & Software Engn Calgary AB T2N 1N4 Canada Nile Univ Nanoelect Integrated Syst Ctr NISC Giza 12677 Egypt 

出 版 物：《NONLINEAR DYNAMICS》 (Nonlinear Dyn)

年 卷 期：2025年

页      面：1-14页

核心收录：

学科分类：08[工学] 0802[工学-机械工程] 0801[工学-力学（可授工学、理学学位）] 

基　　金：Hellenic Foundation for Research and Innovation (HFRI) 

主　　题：Analog filters Gaussian filters Exponential filters Fractional-order filters Power-law filters Impulse response Field Programmable Analog Array 

摘      要：Integer and non-integer-order exponential filters defined in both the time and frequency-domains are investigated in this work. These filters are then approximated utilizing a curve-fitting method leading to a rational integer-order approximating transfer function. The accuracy of the approximation of the exponential filters is confirmed through experimental results obtained using a Field Programmable Analog Array device. A real life application example is also provided, where one of the presented filters is employed for denoising an electrocardiogram signal.