公开(公告)号：US12117507B2

公开(公告)日：2024-10-15

申请号：US17784889

申请日：2020-11-17

Applicant: SHOWA DENKO K.K.

Inventor： Daizo Endo ,  Tatsunori Shino ,  Akira Sakawaki ,  Sho Tonegawa ,  Yasumasa Watanabe

IPC: G01R33/06

CPC classification number: G01R33/063

Abstract: A magnetic sensor includes: plural sensitive elements 31 each including a soft magnetic material layer 105 having a longitudinal direction and a transverse direction and a conductor layer having higher conductivity than the soft magnetic material layer 105 and extending through the soft magnetic material layer 105 in a longitudinal direction, the sensitive element 31 having uniaxial magnetic anisotropy in a direction intersecting the longitudinal direction and being configured to sense a magnetic field by a magnetic impedance effect; and a connecting portion 32 continuous with the conductor layer of the sensitive element and configured to connect transversely adjacent sensitive elements 31 in series.

公开(公告)号：US11940503B2

公开(公告)日：2024-03-26

申请号：US17375367

申请日：2021-07-14

Applicant: SHOWA DENKO K.K.

Inventor： Tatsunori Shino

IPC: G01R33/06

CPC classification number: G01R33/063

Abstract: A magnetic sensor circuit includes: a first element including series-connected resistor and capacitor, or including only a capacitor; a second element including series-connected resistor and inductor, or including a magnetic sensor sensing a magnetic field by a magnetic impedance effect; a third element including series-connected resistor and capacitor, or including only a capacitor; and a fourth element including a magnetic sensor sensing a magnetic field by a magnetic impedance effect, wherein a first series circuit part including the series-connected first and second elements and a second series circuit part including the series-connected third and fourth elements are connected in parallel, and, when the magnetic field sensed by the magnetic sensor has a predetermined reference value, a product of impedance Z1 of the first element and impedance Z4 of the fourth element and a product of impedance Z2 of the second element and impedance Z3 of the third element are equal.

公开(公告)号：US11977135B2

公开(公告)日：2024-05-07

申请号：US17312444

申请日：2019-10-21

Applicant: SHOWA DENKO K.K.

Inventor： Tatsunori Shino ,  Daizo Endo

IPC: G01R33/06

CPC classification number: G01R33/063

Abstract: A magnetic sensor (1) includes: a nonmagnetic substrate (10); and a sensitive element (31) including a plurality of soft magnetic layers (105) (lower soft magnetic layer (105a) and upper soft magnetic layer (105b)) laminated on or above the substrate (10) and a conductor layer (106) laminated between the plurality of soft magnetic layers (105) and having higher conductivity than the plurality of soft magnetic layers (105). The sensitive element (31) has a longitudinal direction and a transverse direction and has uniaxial magnetic anisotropy in a direction intersecting the longitudinal direction. The sensitive element (31) is configured to sense a magnetic field by a magnetic impedance effect.