A Stable FDTD Subgridding Method for Thin PEC Sheet Structure Modeling

Langran Deng; Yuhui Wang; Hanhong Liu; Weibo Wu; Xinyue Zhang; Xingqi Zhang; Jian Wang; Youguang Zhang; Zhizhang Chen; Shunchuan Yang

doi:10.1109/LMWT.2025.3593359

A Stable FDTD Subgridding Method for Thin PEC Sheet Structure Modeling

Langran Deng
, Yuhui Wang
, Hanhong Liu
, Weibo Wu
, Xinyue Zhang
, Xingqi Zhang
, Jian Wang
, Youguang Zhang
, Zhizhang Chen
, Shunchuan Yang^*

^*Corresponding author for this work

School of Electronic and Information Engineering

Beihang University
University College Dublin
University of Alberta
Ningbo University
Dalhousie University

Research output: Contribution to journal › Article › peer-review

1 Scopus citations

Abstract

A finite-difference time-domain (FDTD) subgridding method is developed to efficiently and accurately model thin perfect electric conductor (PEC) sheets. By analyzing two integral loops split by thin sheet structures on the surface of a Yee’s cell, coupling operators at the interface of coarse and subgridding meshes are carefully designed to preserve field continuity and ensure numerical stability. A numerical example is performed to validate the proposed method in terms of stability, accuracy, and efficiency.

Original language	English
Pages (from-to)	1676-1679
Number of pages	4
Journal	IEEE Microwave and Wireless Technology Letters
Volume	35
Issue number	11
DOIs	https://doi.org/10.1109/LMWT.2025.3593359
State	Published - Nov 2025

Keywords

Finite-difference time-domain (FDTD)
stable
subgridding
thin sheet

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10.1109/LMWT.2025.3593359

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title = "A Stable FDTD Subgridding Method for Thin PEC Sheet Structure Modeling",

abstract = "A finite-difference time-domain (FDTD) subgridding method is developed to efficiently and accurately model thin perfect electric conductor (PEC) sheets. By analyzing two integral loops split by thin sheet structures on the surface of a Yee{\textquoteright}s cell, coupling operators at the interface of coarse and subgridding meshes are carefully designed to preserve field continuity and ensure numerical stability. A numerical example is performed to validate the proposed method in terms of stability, accuracy, and efficiency.",

keywords = "Finite-difference time-domain (FDTD), stable, subgridding, thin sheet",

author = "Langran Deng and Yuhui Wang and Hanhong Liu and Weibo Wu and Xinyue Zhang and Xingqi Zhang and Jian Wang and Youguang Zhang and Zhizhang Chen and Shunchuan Yang",

note = "Publisher Copyright: {\textcopyright} 2023 IEEE.",

year = "2025",

month = nov,

doi = "10.1109/LMWT.2025.3593359",

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volume = "35",

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T1 - A Stable FDTD Subgridding Method for Thin PEC Sheet Structure Modeling

AU - Deng, Langran

AU - Wang, Yuhui

AU - Liu, Hanhong

AU - Wu, Weibo

AU - Zhang, Xinyue

AU - Zhang, Xingqi

AU - Wang, Jian

AU - Zhang, Youguang

AU - Chen, Zhizhang

AU - Yang, Shunchuan

PY - 2025/11

Y1 - 2025/11

N2 - A finite-difference time-domain (FDTD) subgridding method is developed to efficiently and accurately model thin perfect electric conductor (PEC) sheets. By analyzing two integral loops split by thin sheet structures on the surface of a Yee’s cell, coupling operators at the interface of coarse and subgridding meshes are carefully designed to preserve field continuity and ensure numerical stability. A numerical example is performed to validate the proposed method in terms of stability, accuracy, and efficiency.

AB - A finite-difference time-domain (FDTD) subgridding method is developed to efficiently and accurately model thin perfect electric conductor (PEC) sheets. By analyzing two integral loops split by thin sheet structures on the surface of a Yee’s cell, coupling operators at the interface of coarse and subgridding meshes are carefully designed to preserve field continuity and ensure numerical stability. A numerical example is performed to validate the proposed method in terms of stability, accuracy, and efficiency.

KW - Finite-difference time-domain (FDTD)

KW - stable

KW - subgridding

KW - thin sheet

UR - https://www.scopus.com/pages/publications/105013062194

U2 - 10.1109/LMWT.2025.3593359

DO - 10.1109/LMWT.2025.3593359

M3 - 文章

AN - SCOPUS:105013062194

SN - 2771-957X

VL - 35

SP - 1676

EP - 1679

JO - IEEE Microwave and Wireless Technology Letters

JF - IEEE Microwave and Wireless Technology Letters

IS - 11

ER -

A Stable FDTD Subgridding Method for Thin PEC Sheet Structure Modeling

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Keywords

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