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2. 发明申请

US20050013661A1 Paving material for absorbing electromagnetic wave and pavement structure using it 失效
标题翻译：用于吸收电磁波和路面结构的铺路材料
公开(公告)号：US20050013661A1
公开(公告)日：2005-01-20
申请号：US10491319
申请日：2001-09-28
申请人： Toshio Saito , Kenichi Harakawa , Yoshitaka Wakinaka , Takeshi Kunishima , Kenichi Yoshimura , Yoshifumi Fujii , Shin-ichiro Andoh , Takeo Iwata , Masakazu Sato
发明人： Toshio Saito , Kenichi Harakawa , Yoshitaka Wakinaka , Takeshi Kunishima , Kenichi Yoshimura , Yoshifumi Fujii , Shin-ichiro Andoh , Takeo Iwata , Masakazu Sato
IPC分类号： E01C7/00 , E01C9/00 , E01C11/16 , H01Q17/00
CPC分类号： E01C11/16 , E01C7/00 , E01C9/00 , H01Q17/00 , H01Q17/004 , H01Q17/005
摘要： An electromagnetic absorber formed of conductive fiber or the like, such as carbon fiber having an overall length corresponding to the wavelength of electromagnetic waves to be absorbed, is mixed into a base material to form an electromagnetic wave-absorbing pavement material. The electromagnetic wave-absorbing pavement material is used to form a pavement having an electromagnetic wave absorbing course. Further, an electromagnetic wave reflecting course is disposed under the electromagnetic wave absorbing course, and the electric length of the electromagnetic wave reflecting course is set to a predetermined value in relation to the dielectric constant so that electromagnetic waves reflecting off the surface of the electromagnetic wave absorbing course and electromagnetic waves reflecting off the electromagnetic wave reflecting course have opposite phases and thereby cancel each other out, whereby the electromagnetic waves are absorbed well. Moreover, the pavement having the electromagnetic wave absorbing course is formed such that the average dielectric constant along a plane orthogonal to a direction of thickness of the electromagnetic wave absorbing course increases from the top surface to the bottom surface thereof. With this structure, the electromagnetic waves easily enter the top surface of a surface course formed of the electromagnetic wave-absorbing pavement material. Thus, the electromagnetic waves directly reflecting off the top surface of the surface course formed of the electromagnetic wave-absorbing pavement material (i.e., directly reflected waves) are reduced, such that the proportion of the electromagnetic waves entering the surface course formed of the electromagnetic wave-absorbing pavement material is increased. As a result, the electromagnetic waves are efficiently absorbed by the electromagnetic wave absorbing course.
摘要翻译：由导电纤维等形成的电磁吸收剂，其总长度对应于要被吸收的电磁波的波长的碳纤维，混入基材中，形成电磁波吸收路面材料。电磁波吸收路面材料用于形成具有电磁波吸收过程的路面。此外，在电磁波吸收路径下设置电磁波反射路线，电磁波反射路径的电长度相对于介电常数设定为规定值，使得从电磁波的表面反射的电磁波反射离开电磁波反射过程的吸收过程和电磁波具有相反的相位，从而彼此抵消，从而电磁波被良好地吸收。此外，具有电磁波吸收过程的路面形成为使得沿着与电磁波吸收过程的厚度方向正交的平面的平均介电常数从顶表面向底面增加。利用这种结构，电磁波容易进入由电磁波吸收路面材料形成的表面层的顶面。因此，由电磁波吸收路面材料（即直接反射波）形成的表面的顶表面直接反射的电磁波被减少，使得进入电磁波的电磁波的比例由电磁波形成波浪吸收路面材料增加。结果，电磁波被电磁波吸收过程有效地吸收。

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