An improved mesh shaking coil and its application to a magnetic shielding panel

Author

Sasada, I. ; Inoue, I. ; Harada, K.

Author_Institution

Dept. of Electron., Kyushu Univ., Fukuoka, Japan

Volume

27

Issue

6

fYear

1991

fDate

11/1/1991 12:00:00 AM

Firstpage

5435

Lastpage

5437

Abstract

An improved structure for a mesh shaking coil with finite area is presented by which shielding performance of ferromagnetic shielding is enhanced while suppressing unwanted leakage of the shaking field. A surrounding conductor is added in series to a finite mesh coil in order to cancel the edge effect which deteriorates the multipole distribution of the shaking field. Cancellation of the edge effect is confirmed by experiment and calculation. The improved mesh coil is applied to develop a magnetic shielding panel with a magnetic sheet/coil/magnetic sheet sandwich structure. The shielding factor of a 20-cm² shielding panel of 6.5% Si-Fe steel was enhanced about three times to 152 by magnetic shaking using the mesh shaking coil

Keywords

coils; magnetic shielding; Si-Fe steel; edge effect cancellation; ferromagnetic shielding; leakage suppression; magnetic sheet/coil/magnetic sheet sandwich structure; magnetic shielding panel; mesh shaking coil; multipole distribution; Area measurement; Coils; Conductors; Current measurement; Humans; Magnetic field measurement; Magnetic materials; Magnetic shielding; Mesh generation; Sandwich structures;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.278863

Filename

278863