Title:
NEAR FIELD NOISE SUPPRESSION SHEET AND MANUFACTURING METHOD THEREOF
Document Type and Number:
Japanese Patent JP2022150016
Kind Code:
A
Abstract:
To provide a near field noise suppression sheet having an imaginary part magnetic permeability μ" of 2.0 or more at 10 GHz, exhibiting excellent noise suppression performance even in a frequency band exceeding 10 GHz, and having sufficient flexibility.SOLUTION: A near field noise suppression sheet includes a base material made of an organic substance, and a flat Fe powder supported in the base material, and the Fe powder has an Fe content of 95 mass% or more, a thickness of 1 μm or less, and a powder diameter of 20 μm or less, and the filling amount of the Fe powder with respect to the base material is 40 vol% or more and 70 vol% or less. The half-value width of the bcc (200) plane peak of Fe detected in powder X-ray diffraction is 0.4 or more.SELECTED DRAWING: None
Inventors:
KURAMAE MASAKI
HIROSE KEITA
HIROSE KEITA
Application Number:
JP2021052406A
Publication Date:
October 07, 2022
Filing Date:
March 25, 2021
Export Citation:
Assignee:
RIKEN KK
International Classes:
H01F1/28; H05K9/00
Domestic Patent References:
| JP2002344192A | 2002-11-29 |
Attorney, Agent or Firm:
Kenji Sugimura
Mitsutsugu Sugimura
Keisuke Kawahara
Azusa Sugihara
Mitsutsugu Sugimura
Keisuke Kawahara
Azusa Sugihara