ETC用電磁波吸収舗装材の開発

概要

論文の詳細を見る
The electronic toll collection (ETC) and the dedicated short range communication (DSRC) in intelligent transport systems (ITS) are materialized. To improve electromagnetic environment of ITS beacon antenna, a wave absorber pavement material consists of a carbon fiber has been developed. However, the oblique incidence characteristic of the pavement material that has been developed for the ETC is not enough to use for ETC and DSRC. Therefore, this research group is developing the wave absorber pavement that mixed soft magnetic metal powder into asphalt. In this report, the relative complex permeability and permittivity of the pavement material were measured by the free space methods and the waveguide method. Then, the wave absorber pavement of the excellent oblique incidence characteristic was designed using the obtained material constant. The calculated result of oblique incidence characteristics showed good agreement with measured one in their tendency.
電気製鋼研究会の論文