On the wideband EMI response of a rotationally symmetric permeable and conducting target


Journal Article

A simple and accurate model is presented for computation of the electromagnetic induction (EMI) resonant frequencies of canonical conducting and ferrous targets, in particular, finite-length cylinders and rings. The imaginary resonant frequencies correspond to the well known exponential decay constants of interest for time-domain EMI interaction with conducting and ferrous targets. The results of the simple model are compared to data computed numerically, via method-of-moments (MoM) and finite-element models. Moreover, the simple model is used to fit measured wideband EMI data from ferrous cylindrical targets (in terms of a small number of parameters). It is also demonstrated that the general model for the magnetic-dipole magnetization, in terms of a frequency-dependent diagonal dyadic, is applicable to general rotationally symmetric targets (not just cylinders and rings).

Full Text

Duke Authors

Cited Authors

  • Carin, L; Yu, H; Dalichaouch, Y; Perry, AR; Czipott, PV; Baum, CE

Published Date

  • June 1, 2001

Published In

Volume / Issue

  • 39 / 6

Start / End Page

  • 1206 - 1213

International Standard Serial Number (ISSN)

  • 0196-2892

Digital Object Identifier (DOI)

  • 10.1109/36.927442

Citation Source

  • Scopus