講演抄録/キーワード |
講演名 |
2023-01-26 15:40
任意形状分散性媒質解析のためのDCP-FDTD法の3次元問題への拡張 ○竹谷和真・岩本哲弥・柴山 純・山内潤治・中野久松(法政大) EST2022-86 |
抄録 |
(和) |
我々は,任意形状の誘電体を精度良く解析できるContour-Path Effective-Permittivity法を3次元問題へ拡張してきた.本稿では新たに,任意形状の分散性媒質を精度良く解析できるDispersive Contour-Path (DCP)法を3次元問題に拡張する.セル内における媒質配置を考慮しつつ,DCPアルゴリズムをTrapezoidal Recursive Convolution法に基づくFDTD法に組み込んだ3次元問題における定式化を行う.本手法の妥当性を検討するために金属球の解析を行い,散乱断面積を評価する.その際,Mieの解析解及び従来の階段近似を用いた場合と比較し,3次元DCP-FDTD法の有効性を実証する. |
(英) |
We have extended the contour-path effective-permittivity technique to three-dimensional (3-D) problems, in which a reasonably accurate solution can be obtained for arbitrarily-shaped dielectric media. In this article, we newly extend the dispersive contour-path (DCP) technique to 3-D problems to obtain an accurate solution for arbitrarily-shaped dispersive media. The DCP algorithm is introduced into the FDTD method based on the trapezoidal recursive convolution technique, in which the position of the dispersive medium is considered in each cell for 3-D problems. We investigate a metal sphere and evaluate the scattering cross section. The results from the present technique are compared with the Mie solutions and those from the conventional staircase FDTD method to confirm the effectiveness of the 3-D DCP technique. |
キーワード |
(和) |
有限差分時間領域(FDTD)法 / Dispersive contour-path (DCP) アルゴリズム / Drude-Lorentz (DL) モデル / Trapezoidal recursive convolution (TRC) 法 / / / / |
(英) |
Finite-difference time-domain (FDTD) method / Dispersive contour-path (DCP) algorithm / Drude-Lorentz (DL) model / Trapezoidal recursive convolution (TRC) technique / / / / |
文献情報 |
信学技報, vol. 122, no. 365, EST2022-86, pp. 64-69, 2023年1月. |
資料番号 |
EST2022-86 |
発行日 |
2023-01-19 (EST) |
ISSN |
Online edition: ISSN 2432-6380 |
著作権に ついて |
技術研究報告に掲載された論文の著作権は電子情報通信学会に帰属します.(許諾番号:10GA0019/12GB0052/13GB0056/17GB0034/18GB0034) |
PDFダウンロード |
EST2022-86 |