Optical magnetic field probe with a loop antenna element doubly loaded with electrooptic crystals

被引:10
|
作者
Suzuki, E [1 ]
Arakawa, S
Ota, H
Arai, KI
Sato, R
机构
[1] Natl Informat & Commun Technol, Sendai EMC Res Ctr, Sendai, Miyagi 9893204, Japan
[2] Tohoku Univ, Elect Commun Res Inst, Sendai, Miyagi 9808577, Japan
关键词
electromagnetic near-field; electrooptic (EO) crystals; loop antenna; pockels effect; probe;
D O I
10.1109/TEMC.2004.837835
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
We propose a new type of optical probe designed to detect magnetic near-fields with high accuracy up to the gigahertz range. Its probe head consists of a loop antenna element doubly loaded with electrooptic crystals. Using optical technology, it realizes hybrid operation of a conventional double-loaded loop probe and requires no metallic cables or electrical hybrid junction. We examined probe characteristics for magnetic field detection up to 10 GHz. We confirmed that the probe can measure magnetic fields near a microstrip line with high accuracy in the gigahertz range and can suppress influence of electric fields.
引用
收藏
页码:641 / 647
页数:7
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