研究論文
多孔質炭素材料を用いた電波吸収材のミリ波帯電波吸収特性
キーワード:
Porous carbon material,
broadband-wave absorber,
millimeter waves,
free-space method,
return loss
2018 年 65 巻 6 号 p. 307-310
詳細
2018 年 65 巻 6 号 p. 307-310
As a new broadband-wave absorber material in millimeter waves, the thin rubber sheet containing a porous carbon material “PHYTOPOROUS” made from plant-based ingredients were prepared. We investigated the complex permittivity εr*and the reflection loss Γ measured by free-space method using dielectric lenses and incident angle dependence of the reflection loss measured by free-space arch method. The rubber sheet containing PHYTOPOROUS made from soybean hulls showed the reflection loss of more than −20 dB with a bandwidth of 18 GHz at centered frequency of 90 GHz.
