A planar-type current detector composed of ultrathin Permalloy plates and sputtered electrodes operating over 10 MHz

Author

Yamaguchi, M. ; Hirai, N. ; Kawasaki, H. ; Arai, K.I.

Author_Institution

Res. Inst. of Electr. Commun., Tohoku Univ., Sendai, Japan

Volume

26

Issue

5

fYear

1990

fDate

9/1/1990 12:00:00 AM

Firstpage

1569

Lastpage

1571

Abstract

A miniaturized planar-type current detector composed of ultrathin Permalloy plates has been developed. The detector with sputtered gold electrodes was capable of sensing the amplitude of a 20-MHz current. By taking into account the impedance matching of the transmission line between the device and the signal source, the amplitude and the phase of a 80-MHz current were detected with sufficient sensitivity by the trial detector. The detector can sense high-frequency current until the capacitance between the parallel plates influences the operation

Keywords

Permalloy; electric current measurement; electric sensing devices; gold; metallic thin films; sputtered coatings; 20 MHz; 80 MHz; Au; FeNi; capacitance; current amplitude sensing; current phase detection; high-frequency current; impedance matching; parallel plates; planar-type current detector; signal source; sputtered electrodes; transmission line; ultrathin Permalloy plates; Amorphous magnetic materials; Amorphous materials; Conductivity; Detectors; Electrodes; Frequency; Gold; Magnetic devices; Phase detection; Skin effect;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.104449

Filename

104449