A Symmetric FDTD Subgridding Method With Guaranteed Stability and Arbitrary Grid Ratio - Details

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Abstract：

A　finite-difference　time-domain　(FDTD)　subgridding　method　is　proposed　to　efficiently　and　accurately　solve　3-D　electromagnetic　problems.　Based　on　the　reciprocal　and　symmetric　interpolation　operators　between　coarse　and　subgridding　meshes,　spatial　coupling　matrices　are　carefully　designed　to　guarantee　long-time　stability.　To　further　enhance　its　capability　of　handling　multiscale　structures,　arbitrary　grid　ratios　and　nested　subgridding　meshes　are　extended　to　be　supported　in　the　proposed　method.　In　addition,　the　rigorous　analysis　shows　that　the　proposed　FDTD　subgridding　method　is　theoretically　stable.　Five　numerical　examples　including　a　simple　cavity　with　perfect　electric　conductors　(PECs),　a　rectangular　TEM　waveguide,　a　dielectric　resonator　(DR),　a　single-layer　substrate　integrated　waveguide　(SIW),　and　a　large　airplane　platform　with　a　dipole　are　carried　out　to　validate　its　effectiveness.　Results　show　that　it　is　stable,　accurate,　efficient,　and　easy　to　model　complex　structures.　©　1963-2012　IEEE.

Keyword：

Dielectric devices Finite difference time domain method Substrate integrated waveguides

Community：

[ 1 ] [Deng, Langran]Research Institute for Frontier Science, The School of Electronic and Information Engineering, Beihang University, Beijing; 100083, China
[ 2 ] [Wang, Yuhui]Research Institute for Frontier Science, The School of Electronic and Information Engineering, Beihang University, Beijing; 100083, China
[ 3 ] [Tian, Chengyi]Huawei Technologies Company Ltd., Shanghai; 201206, China
[ 4 ] [Liu, Hanhong]Beihang University, School of Electronic and Information Engineering, Beijing; 100083, China
[ 5 ] [Wang, Xinsong]Beihang University, School of Electronic and Information Engineering, Beijing; 100083, China
[ 6 ] [Chen, Guangzhi]Research Institute for Frontier Science, The School of Electronic and Information Engineering, Beihang University, Beijing; 100083, China
[ 7 ] [Wang, Xiang-Hua]Tianjin University of Technology and Education, School of Science, Tianjin; 300222, China
[ 8 ] [Zhang, Xingqi]University College Dublin, School of Electrical and Electronic Engineering, Dublin 4, D04 V1W8, Ireland
[ 9 ] [Chen, Zhizhang]Fuzhou University, Fuzhou, College of Physics and Information Engineering, Fujian; 350108, China
[ 10 ] [Chen, Zhizhang]Dalhousie University, Department of Electrical and Computer Engineering, Halifax; B3H 4R2, Canada
[ 11 ] [Yang, Shunchuan]Research Institute for Frontier Science, The School of Electronic and Information Engineering, Beihang University, Beijing; 100083, China

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Source ：

IEEE Transactions on Antennas and Propagation

ISSN： 0018-926X

Year： 2023

Issue： 12

Volume： 71

Page： 9207-9221

4 . 6

JCR@2023

4 . 6 0 0

JCR@2023

JCR Journal Grade：1

CAS Journal Grade：1

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WoS CC Cited Count：

SCOPUS Cited Count： 2

ESI Highly Cited Papers on the List： 0 Unfold All

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30 Days PV： 0

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