Title:
電磁波吸収体
Document Type and Number:
Japanese Patent JP7339246
Kind Code:
B2
Abstract:
To provide a transmission-type electromagnetic-wave absorber that can satisfactorily absorb electromagnetic waves of high frequencies in or above the millimeter-wave band while reducing the reflection of electromagnetic waves on the surface of the absorber. The transmission-type electromagnetic-wave absorber includes an electromagnetic-wave absorbing layer 1 containing a magnetic iron oxide 1a that magnetically resonates at a frequency in or above the millimeter-wave band and a binder 1b containing an organic material. The real part of the complex relative permittivity of the electromagnetic-wave absorber is 5.5 or less at 1 GHz.
Inventors:
Toshio Hiroi
Masao Fujita
Masao Fujita
Application Number:
JP2020523081A
Publication Date:
September 05, 2023
Filing Date:
May 31, 2019
Export Citation:
Assignee:
Maxell, Ltd.
International Classes:
C01G49/00; H05K9/00; C01G49/06; H01F1/113
Domestic Patent References:
| JP11354972A | ||||
| JP2013213198A | ||||
| JP200959972A | ||||
| JP8111594A |
Foreign References:
| WO2018084235A1 |
Attorney, Agent or Firm:
Ikeuchi & Partners Patent Attorney Corporation