Detection of high-frequency magnetic fields by a GMI probe

被引:7
|
作者
Tan, Kenji [1 ]
Komakine, Takashi
Yamakawa, Kiyoshi
Kayano, Yoshiki
Inoue, Hiroshi
Yamaguchi, Masahiro
机构
[1] Akita Res Inst Adv Technol, Akita 0101623, Japan
[2] Akita Univ, Dept Elect & Elect Engn, Fac Engn & Resource Sci, Akita 0108502, Japan
[3] Tohoku Univ, Grad Sch Engn, Dept Elect & Commun Engn, Sendai, Miyagi 9808579, Japan
关键词
magnetic field sensor; magnetoimpedance; spatial resolution; wideband;
D O I
10.1109/TMAG.2006.879627
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
A giant magnetoimpedance (GMI) probe was fabricated in order to detect high-frequency magnetic fields. Magnetic near field measurements were carried out using the probe. A microstrip line driven by a current whose frequency was changed from 500 Hz to 1 GHz was used as a signal source in the measurements. The probe could clearly detect the characteristics of the field distribution such as high magnetic field strengths near both longitudinal edges of the signal plane of the microstrip line and null points. At a signal frequency of 100 MHz, the experimental result was compared with numerical calculation data. The output profile of the measurement agreed well with the profile of the calculated field distribution. The detection of the characteristics and the agreement indicate the potential that the GMI probe has high spatial resolution in a wide frequency range.
引用
收藏
页码:3329 / 3331
页数:3
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