JP2019057730A5 - - Google Patents

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JP2019057730A5
JP2019057730A5 JP2018232235A JP2018232235A JP2019057730A5 JP 2019057730 A5 JP2019057730 A5 JP 2019057730A5 JP 2018232235 A JP2018232235 A JP 2018232235A JP 2018232235 A JP2018232235 A JP 2018232235A JP 2019057730 A5 JP2019057730 A5 JP 2019057730A5
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Japan
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layer
electromagnetic wave
range
dielectric
wave absorber
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JP2018232235A
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Japanese (ja)
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JP2019057730A (en
JP7000301B2 (en
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Priority to JP2021209263A priority patent/JP7350048B2/en
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Claims (3)

誘電体層と、上記誘電体層の一方の面に設けられる抵抗層と、上記誘電体層の他方の面に設けられ上記抵抗層より低いシート抵抗を有する導電層とを有する電磁波吸収体であって、上記誘電体層が単層または複層からなり、上記誘電体層の少なくとも一層が、比誘電率が１〜５．１９の範囲にあって、その厚みが１００〜１０００μｍの範囲にあり、上記導電層の厚みが２０ｎｍ〜１００μｍの範囲にあり、６０〜９０ＧＨｚの周波数帯域において、電磁波吸収量が２０ｄＢ以上である周波数帯域の帯域幅が５ＧＨｚ以上であることを特徴とする電磁波吸収体。 A dielectric layer, the dielectric layer one is provided on the surface resistance layer, electromagnetic wave absorber having a conductive layer having another side face lower sheet resistance than provided above the resistance layer of the dielectric layer The dielectric layer comprises a single layer or multiple layers, and at least one of the dielectric layers has a relative dielectric constant in the range of 1 to 5.19 and a thickness in the range of 100 to 1000 μm. An electromagnetic wave absorber, wherein the thickness of the conductive layer is in the range of 20 nm to 100 μm, and the frequency band in which the amount of electromagnetic wave absorption is 20 dB or more is 5 GHz or more in the frequency band of 60 to 90 GHz. . 上記導電層のシート抵抗が、１．０×１０-7〜１００Ω／□の範囲に設定された請求項１記載の電磁波吸収体。 2. The electromagnetic wave absorber according to claim 1, wherein the sheet resistance of the conductive layer is set in a range of 1.0 × 10 −7 to 100 Ω / □. 上記誘電体層が単層または二層からなるものである請求項１または２記載の電磁波吸収体。3. The electromagnetic wave absorber according to claim 1, wherein the dielectric layer comprises a single layer or two layers.
JP2018232235A 2018-12-12 2018-12-12 Electromagnetic wave absorber Active JP7000301B2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2018232235A JP7000301B2 (en) 2018-12-12 2018-12-12 Electromagnetic wave absorber
JP2021209263A JP7350048B2 (en) 2018-12-12 2021-12-23 electromagnetic wave absorber

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2018232235A JP7000301B2 (en) 2018-12-12 2018-12-12 Electromagnetic wave absorber

Related Parent Applications (1)

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JP2016241731A Division JP6453295B2 (en) 2016-12-14 2016-12-14 Electromagnetic wave absorber

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JP2021209263A Division JP7350048B2 (en) 2018-12-12 2021-12-23 electromagnetic wave absorber

Publications (3)

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JP2019057730A JP2019057730A (en) 2019-04-11
JP2019057730A5 true JP2019057730A5 (en) 2020-01-30
JP7000301B2 JP7000301B2 (en) 2022-01-19

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JP2018232235A Active JP7000301B2 (en) 2018-12-12 2018-12-12 Electromagnetic wave absorber
JP2021209263A Active JP7350048B2 (en) 2018-12-12 2021-12-23 electromagnetic wave absorber

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JP2021209263A Active JP7350048B2 (en) 2018-12-12 2021-12-23 electromagnetic wave absorber

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Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7000301B2 (en) * 2018-12-12 2022-01-19 日東電工株式会社 Electromagnetic wave absorber
US20220408618A1 (en) 2019-11-18 2022-12-22 Toray Industries, Inc. Laminated sheet
WO2022065006A1 (en) 2020-09-28 2022-03-31 富士フイルム株式会社 Laminate manufacturing method, antenna-in package manufacturing method, laminate, and composition

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004006436A (en) * 2002-03-29 2004-01-08 Aichi Steel Works Ltd Radio wave absorption material and wave absorber
JP2004296758A (en) * 2003-03-27 2004-10-21 Takechi Kogyo Gomu Co Ltd Millimeter wave absorber
JP7000301B2 (en) * 2018-12-12 2022-01-19 日東電工株式会社 Electromagnetic wave absorber

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