Title:
METHOD FOR MANUFACTURING RADIO WAVE ABSORBER, RADIO WAVE ABSORBER, AND RADAR MECHANISM
Document Type and Number:
WIPO Patent Application WO/2021/199917
Kind Code:
A1
Abstract:
[Problem] To provide a radio wave absorber having a conductive absorption layer formed through injection molding and having an absorption peak in a desired frequency band. [Solution] A method for manufacturing a radio wave absorber 1 which absorbs a millimeter wave or a sub-millimeter wave involves: forming an absorption layer 2 including a conductive material through injection molding; forming a reflection layer 3 on one main surface of the absorption layer 2; forming a conductive layer on the other main surface of the absorption layer 2; and machining the conductive layer to be a plurality of conductive patches 4 so as to achieve an area occupancy ratio based on the thickness of the absorption layer 2.
Inventors:
MURANAKA MAKOTO (JP)
Application Number:
PCT/JP2021/008774
Publication Date:
October 07, 2021
Filing Date:
March 05, 2021
Export Citation:
Assignee:
NIFCO INC (JP)
International Classes:
H05K9/00; B32B7/025; B32B15/08; H01P11/00; H01Q17/00
Domestic Patent References:
| WO2019132027A1 | 2019-07-04 | |||
| WO2006103761A1 | 2006-10-05 |
Foreign References:
| JP2012209515A | 2012-10-25 | |||
| JP2007042888A | 2007-02-15 | |||
| JP2009065252A | 2009-03-26 | |||
| JP2019079895A | 2019-05-23 |
Attorney, Agent or Firm:
NAKAMURA Yukitaka et al. (JP)
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