Title :
Phase invariant delay approximations
Author :
Wilson, G. ; Papamichael, M.
Author_Institution :
James Cook University of North Queensland, Department of Electrical & Electronic Engineering, Townsville, Australia
Abstract :
A simple procedure, applicable to any high order transfer function (n¿3), is described, which generates a family of transfer functions possessing identical phase/frequency responses but distinct gain/frequency responses. By application to a 10th-order all-pole Bessel function, it is shown that selected members of this particular family have significantly wider gain-bandwidths and correspondingly improved time domain behaviour.
Keywords :
Bessel functions; function approximation; signal processing; transfer functions; all-pole Bessel function; identical phase/frequency responses; phase invariant delay approximations; time domain behaviour; transfer function;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19810206
