Title:
ELECTROMAGNETIC WAVE ABSORPTION FILM, ELECTROMAGNETIC WAVE ABSORPTION SHEET
Document Type and Number:
WIPO Patent Application WO/2020/179349
Kind Code:
A1
Abstract:
An aspect of the present invention provides an electromagnetic wave absorption film that is less susceptible to the surrounding environment. An electromagnetic wave absorption film 10 comprising: a planar base 20; a first electromagnetic wave absorption pattern 1 formed on the base 20; a second electromagnetic wave absorption pattern 2 formed on the base 20; and a third electromagnetic wave absorption pattern 3 formed on the base 20, wherein a frequency at which an absorption amount of electromagnetic waves absorbed by the first electromagnetic wave absorption pattern 1 exhibits its maximum value in a range of 20 to 110 GHz is A GHz, the value of a frequency at which an absorption amount of electromagnetic waves absorbed by the second electromagnetic wave absorption pattern 2 exhibits its maximum value is B GHz that satisfies expression (1) indicated below, and the value of a frequency at which an absorption amount of electromagnetic waves absorbed by the third electromagnetic wave absorption pattern 3 exhibits its maximum value is C GHz that satisfies expression (2) indicated below. 1.037 × A ≤ B ≤ 1.30 × A Expression (1) 0.60 × A ≤ C ≤ 0.963 × A Expression (2)
More Like This:
JP2000258526 | SHIELD FENCE, RADAR AND MANUFACTURE OF RADAR |
JPS63204799 | WAVE ABSORBER |
Inventors:
MATSUSHITA TAIGA (JP)
Application Number:
PCT/JP2020/004578
Publication Date:
September 10, 2020
Filing Date:
February 06, 2020
Export Citation:
Assignee:
LINTEC CORP (JP)
International Classes:
H01Q17/00; B32B7/025; H05K9/00
Foreign References:
US20140111365A1 | 2014-04-24 | |||
JP2009170887A | 2009-07-30 | |||
JP2005317945A | 2005-11-10 | |||
US5214432A | 1993-05-25 | |||
US20140240159A1 | 2014-08-28 | |||
JP2019037839A | 2019-03-14 | |||
JP2019094552A | 2019-06-20 | |||
JP5162424B2 | 2013-03-13 |
Other References:
See also references of EP 3934025A4
Attorney, Agent or Firm:
NISHIZAWA Kazuyoshi et al. (JP)
Download PDF:
Previous Patent: MOVABLE CONNECTOR, AND CONNECTOR ASSEMBLY
Next Patent: PAPER CONTAINER AND METHOD FOR USING SAME
Next Patent: PAPER CONTAINER AND METHOD FOR USING SAME