Title:
λ/4 TYPE RADIO WAVE ABSORBER
Document Type and Number:
WIPO Patent Application WO/2020/067145
Kind Code:
A1
Abstract:
The present invention addresses the problem of providing a λ/4 type radio wave absorber which comprises a supporting body, a resistive film, a dielectric layer and a reflective layer, and which achieves higher radio wave absorption performance. The present invention solves the problem by means of a λ/4 type radio wave absorber which comprises a supporting body, a resistive film, a dielectric layer and a reflective layer, and which satisfies formula (1): -0.375x + 1086.9 < y < -0.375x + 1140 (wherein x represents the resistance of the resistive film; and y represents the value obtained by the formula y = (thickness of supporting body) × (relative dielectric constant of supporting body)0.5 + (thickness of dielectric layer) × (relative dielectric constant of dielectric layer)0.5).
Inventors:
MUTOU KATSUNORI (JP)
NAKAO SACHIKO (JP)
NAKAO SACHIKO (JP)
Application Number:
PCT/JP2019/037569
Publication Date:
April 02, 2020
Filing Date:
September 25, 2019
Export Citation:
Assignee:
SEKISUI CHEMICAL CO LTD (JP)
International Classes:
H05K9/00; B32B7/025; H01Q17/00
Foreign References:
| JP2018147999A | 2018-09-20 | |||
| JP2018056562A | 2018-04-05 | |||
| JPH05114813A | 1993-05-07 | |||
| JP2017005214A | 2017-01-05 | |||
| JP2018098367A | 2018-06-21 |
Other References:
See also references of EP 3860326A4
Attorney, Agent or Firm:
SAEGUSA & PARTNERS (JP)
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