ELECTROMAGNETIC WAVE INTERFERENCE ABSORBER

• Main Authors: AKAMA HIROSHI, HIRATA TAKASHI, ORIHARA KATSUHISA, SERGEY BOLOTOV, KANEHIRA HIRONORI
• Format: Patent
• Language: English; Japanese
• Published: 28.09.2023
• Subjects: ANTENNAS, i.e. RADIO AERIALS; BASIC ELECTRIC ELEMENTS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS; PRINTED CIRCUITS

To provide an electromagnetic wave interference absorber which is thin and has a wide Dip band.SOLUTION: An electromagnetic wave interference absorber 10 has a dielectric layer 2 containing conductive particles 3 and a resin 4 where the conductive particles 3 are dispersed, and an electromagnetic wave reflection layer 1, wherein the conductive particles 3 have any form of a disc, a ring and a C type ring with an average outer diameter of 1,000 nm or less and an average thickness of 5/9 or less of the average outer diameter, and relative permeability of the dielectric layer 2 is more than 1 and a relative dielectric constant thereof is 2-30.SELECTED DRAWING: Figure 1 【課題】厚みが薄く、かつ、Ｄｉｐ帯域が広帯域化された電磁波干渉吸収体を提供する。【解決手段】電磁波干渉吸収体１０は、導電性粒子３及び導電性粒子３を分散した樹脂４を含む誘電体層２と、電磁波反射層１と、を有し、導電性粒子３が、１，０００ｎｍ以下の平均外径及び平均外径の５／９以下の平均厚みを有する円盤、リング及びＣ型リングのいずれかの形状を有し、誘電体層２の比透磁率が１超、比誘電率が２～３０である。【選択図】図１