金属シールド層を有する検出コイルを用いたMHz帯域用インダクション磁気センサ

カテゴリ: 論文誌(論文単位)

グループ名: 【A】基礎・材料・共通部門

発行日: 2011/07/01

タイトル(英語): Induction Magnetometer with a Metal Shielded Pickup Coil for MHz Range Operation

著者名: 田代　晋久（信州大学スピンデバイステクノロジーセンター），井上　伸一朗（信州大学スピンデバイステクノロジーセンター），内山　悠（信州大学スピンデバイステクノロジーセンター），脇若　弘之（信州大学スピンデバイステクノロジーセンター），安井　英己（IHIエアロスペース），木下　久（飯田EMCセンター）

著者名(英語): Kunihisa Tashiro (Spin Device Technology Center, Shinshu University), Shin-ichiro Inoue (Spin Device Technology Center, Shinshu University), Yu Uchiyama (Spin Device Technology Center, Shinshu University), Hiroyuki Wakiwaka (Spin Device Technology Center, Shinshu University), Hidemi Yasui (IHI Aerospace), Hisashi Kinoshita (Iida EMC Center)

キーワード: インダクション磁気センサ，電流検出型，微弱磁界，MHz帯域，等価回路モデル　　induction magnetometer，current detection type，weak magnetic field，MHz range，equivalent circuit model

要約(英語): This paper presents an induction magnetometer with a metal shielded pickup coil for MHz range operation. The validity of two simple equivalent circuit models for voltage detection and current detection is also confirmed by experimental results. From the measured frequency response for a calibrated magnetic field of 10 nT, we successfully demonstrate the ability of the magnetometer. The experimental results reveal the quantitative data of the equivalent resistance and inductance. When the resistance of the pickup coil is quite low, the equivalent resistance can be regarded as the resistance of the BNC connector (50 Ω). With the equivalent resistance, the absolute error of the output voltage between measurement and estimation is less than ±1 dBμV between 0.3 MHz and 2 MHz. In contrast, it is found that the existence of the metal shielded layer affects the estimated equivalent inductance. If the pickup coil has no metal shielded layer, the estimated value of the equivalent inductance is 56.3 times the inductance of the pickup coil. This value is verified by the estimated and measured results. However, this phenomenon is not found if the pickup coil has the metal shielded layer.

本誌: 電気学会論文誌A（基礎・材料・共通部門誌） Vol.131 No.7 （2011） 特集：高周波マイクロ磁気応用技術の最前線

本誌掲載ページ: 490-498 p

原稿種別: 論文／日本語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejfms/131/7/131_7_490/_article/-char/ja/