All-pass-based design of nearly-linear phase IIR low-pass differentiators

Stančić, Goran; Krstić, Ivan; Cvetković, Stevica

doi:10.1080/00207217.2020.1726498

Cited by 8 publications

(1 citation statement)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Therefore, the design of wideband digital differentiators is the main issue in the current research environment. A new approach to the design of the nearlylinear phase infinite impulse response low-pass differentiators using a parallel all-pass structure is discussed in [12]. Comparison with the existing nearly-linear phase infinite impulse response low-pass differentiators shows that the low-pass differentiators designed using the proposed method usually require less multiplications.…”

Section: Introductionmentioning

confidence: 99%

Design of First Order Differentiator With Parallel All-Pass Structure

Stančić,

Krstić,

Nikolić

et al. 2023

FU Aut Cont Rob

View full text Add to dashboard Cite

In this paper a new method for design of the first order differentiator is presented. The proposed differentiator consists of two parallel branches, i.e. direct path and IIR all-pass filter. The described design method allows one to obtain solution with minimum mean relative error at the desired region by controlling the ratio of phase response extremes. A small relative magnitude error, as well as a low phase error, at low frequencies is condition for good time domain behaviour. The obtained differentiator can be realized by means of only two multipliers, hence being a good choice for real time applications. The proposed solution provides a lower magnitude error than several known differentiators with similar phase error.

show abstract

Section: Introductionmentioning

confidence: 99%