公开(公告)号：US06650112B2

公开(公告)日：2003-11-18

申请号：US10231169

申请日：2002-08-30

申请人： Akio Takayama ,  Tamio Umehara ,  Akiyo Yuguchi ,  Hideki Kato ,  Akira Goto

发明人： Akio Takayama ,  Tamio Umehara ,  Akiyo Yuguchi ,  Hideki Kato ,  Akira Goto

IPC分类号： G01R3302

CPC分类号： G11B5/332 ,  G01R33/02

摘要： A magnetic impedance element including a substrate made of a non-magnetic material, a thin-film magnetic core formed on said substrate, and first and second electrodes disposed on both ends of said thin-film magnetic core in a longitudinal direction thereof, characterized in that said thin-film magnetic core is formed by laminating a plurality of magnetic films through non-magnetic thin-films.

摘要翻译： 一种磁阻抗元件，包括由非磁性材料制成的衬底，形成在所述衬底上的薄膜磁芯，以及设置在所述薄膜磁芯的纵向两端的第一和第二电极，其特征在于， 所述薄膜磁芯是通过非磁性薄膜层叠多个磁性膜而形成的。

公开(公告)号：US06472868B1

公开(公告)日：2002-10-29

申请号：US09366547

申请日：1999-08-04

申请人： Akio Takayama ,  Tamio Umehara ,  Akiyo Yuguchi ,  Hideki Kato ,  Akira Goto

发明人： Akio Takayama ,  Tamio Umehara ,  Akiyo Yuguchi ,  Hideki Kato ,  Akira Goto

IPC分类号： G01R3302

CPC分类号： G11B5/332 ,  G01R33/02

摘要： A magnetic impedance element including a substrate made of a non-magnetic material, a thin-film magnetic core formed on said substrate, and first and second electrodes disposed on both ends of said thin-film magnetic core in a longitudinal direction thereof, characterized in that said thin-film magnetic core is formed by laminating a plurality of magnetic films through non-magnetic thin-films.

摘要翻译： 一种磁阻抗元件，包括由非磁性材料制成的衬底，形成在所述衬底上的薄膜磁芯，以及设置在所述薄膜磁芯的纵向两端的第一和第二电极，其特征在于， 所述薄膜磁芯是通过非磁性薄膜层叠多个磁性膜而形成的。

公开(公告)号：US06229307B1

公开(公告)日：2001-05-08

申请号：US09372754

申请日：1999-08-11

申请人： Tamio Umehara ,  Akio Takayama ,  Hideki Kato ,  Akiyo Yuguchi

发明人： Tamio Umehara ,  Akio Takayama ,  Hideki Kato ,  Akiyo Yuguchi

IPC分类号： G01R3302

CPC分类号： G01R33/02 ,  G11B5/33 ,  G11B5/332

摘要： A magnetic sensor includes: an oscillating circuit for allowing an a.c. magnetic field into a magnetic impedance element made of a ferromagnetic substance, having first and second electrodes on both ends thereof in a longitudinal direction thereof and having a structure in which a bias coil and a negative feedback coil are wound around the ferromagnetic substance through an insulator; a detecting circuit for detecting an a.c. voltage of the magnetic impedance element due to a change in the impedance of the magnetic impedance element which is caused by an applied external magnetic field; a peak holding circuit for holding the peak value of the output voltage of the detecting circuit; and an amplifying circuit for differentially amplifying the output of the peak holding circuit.

摘要翻译： 磁传感器包括：一个振荡电路，用于允许一个直流 磁场变成由铁磁物质制成的磁阻抗元件，在其两端的纵向具有第一和第二电极，并且具有其中偏置线圈和负反馈线圈通过绝缘体缠绕在铁磁物质周围的结构 ; 用于检测交流电流的检测电路。 由于施加的外部磁场引起的磁阻抗元件的阻抗的变化导致的磁阻抗元件的电压; 峰值保持电路，用于保持检测电路的输出电压的峰值; 以及用于差分放大峰值保持电路的输出的放大电路。