2026-05-26T15:46:41.936Z http://ezaposleni.singidunum.ac.rs/rest/sciNaucniRezultati/oai

ezaposleni.singidunum.ac.rs/rest/sciNaucniRezultati/oai:2:572 2013-10-27T14:36:10Z 2

Design of first–order differentiator utilising FIR and IIR sub–filters 2013 http://ezaposleni.singidunum.ac.rs/rest/sciNaucniRezultati/oai/record/2/572 http://inderscience.metapress.com/content/0262087p5ll2w052/ LJ. Milić M. Lutovac J. Ćertić In this paper, we propose a novel approach for constructing the first–order differentiator. It has been shown recently that an efficient Finite Impulse Response (FIR) wideband differentiator can be synthesised when applying the multirate and Frequency–Response Masking (FRM) techniques. The overall signal processing task is shared between a very low–order differentiator and an FIR half–band filter. The novelty of this paper is the usage of an approximately linear–phase IIR half–band filter based on the parallel connection of all–pass sub–filter and pure delay. The structure of resulting wideband differentiator consists of the approximately linear phase all–pass sub–filter, two low–order FIR polyphase sub–filters, and the delay element. The knowledge–based design has been used for the analysis and improvements of the wideband differentiator. The proposed system provides computational savings and exhibits a significantly smaller overall delay if compared with the corresponding solution based on FIR filters only. article 10.1504/IJRIS.2013.055122 5 1 3 11 1755-0556 International Journal of Reasoning-based Intelligent Systems