ELECTROMAGNETIC WAVE ABSORBER AND COMMUNICATION SYSTEM
To provide an electromagnetic wave absorber for absorbing millimeter-wave electromagnetic waves which can achieve a large amount of electromagnetic wave absorption, and of which sheet thickness can be easily controlled when used for an electromagnetic wave absorbing sheet.SOLUTION: An electromagneti...
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| Format: | Patent |
| Sprache: | eng ; jpn |
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| Zusammenfassung: | To provide an electromagnetic wave absorber for absorbing millimeter-wave electromagnetic waves which can achieve a large amount of electromagnetic wave absorption, and of which sheet thickness can be easily controlled when used for an electromagnetic wave absorbing sheet.SOLUTION: An electromagnetic absorber includes: a large first electromagnetic wave absorbing substance 10 made of a hollow material with a relatively high dielectric constant; a plurality of small second electromagnetic wave absorbing substances 20 made of granular materials with a relatively low dielectric constant bonded to the surface of the first electromagnetic wave absorbing substance 10; and a binding material 30 that bonds the first electromagnetic wave absorbing material 10 and the second electromagnetic wave absorbing substances 20 together.SELECTED DRAWING: Figure 1
【課題】多くの電磁波吸収量を達成でき、かつ、電磁波吸収シートに用いる場合にシート厚の制御が容易なミリ波の電磁波吸収用の電磁波吸収体を提供すること。【解決手段】 相対的に高誘電率で中空素材からなる大型の第１の電磁波吸収物質１０と、第１の電磁波吸収物質１０の表面に結合された相対的に低誘電率で粒状素材からなる小型の複数の第２の電磁波吸収物質２０と、第１の電磁波吸収物質１０と第２の電磁波吸収物質２０とを結合する結合材３０とを備える。【選択図】図１ |
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