Development of Broadband Parametric Permittivity Model of Dielectric Absorbing Material for Time-domain Electromagnetic Wave Simulation

カテゴリ: 論文誌(論文単位)

グループ名: 【A】基礎・材料・共通部門

発行日: 2018/06/01

タイトル(英語): Development of Broadband Parametric Permittivity Model of Dielectric Absorbing Material for Time-domain Electromagnetic Wave Simulation

著者名: Kosorl Thourn (Graduate School of Science and Engineering, Tokyo Institute of Technology), Takahiro Aoyagi (School of Engineering, Tokyo Institute of Technology), Jun-ichi Takada (School of Environment and Society, Tokyo Institute of Technology)

著者名(英語): Kosorl Thourn (Graduate School of Science and Engineering, Tokyo Institute of Technology), Takahiro Aoyagi (School of Engineering, Tokyo Institute of Technology), Jun-ichi Takada (School of Environment and Society, Tokyo Institute of Technology)

キーワード: electromagnetic compatibility (EMC)，dielectric absorbing material，electromagnetic wave absorber，multi-pole Debye relaxation model，broadband simulation，FDTD method

要約(英語): In this paper, a two-variable multi-pole Debye relaxation model with additional static conductive term is proposed to model complex permittivity of expanded polystyrene mixed with graphite powder obtained from the measured data. This data was available in the frequency range 0.4-5GHz and the carbon content range 2-30 kg/m3. The parameters of the proposed model are empirically modeled as a linear and quadratic function of carbon content. It is shown that using the proposed model a time domain calculation of broadband characteristics of wave absorbers containing this composite material is enabled. To evaluate the proposed model for a time domain broadband calculation, numerical simulations of the wave absorbers with different structures (planar and pyramid) are performed by the finite-different time-domain (FDTD) method. The results of the simulations are compared with those obtained by other techniques and good agreement is obtained.

本誌: 電気学会論文誌A（基礎・材料・共通部門誌） Vol.138 No.6 （2018） 特集：電磁界の人体防護にかかわる評価技術ならびに電磁環境評価技術に関する論文

本誌掲載ページ: 302-308 p

原稿種別: 論文／英語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejfms/138/6/138_302/_article/-char/ja/