Efficiency‐Enhanced HIE‐FDTD With Nonuniform Grid and CPML

Microwave and Optical Technology Letters 2026 Open access

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Authors: Kefang Xiao, Kanglong Zhang, Wenhao Jing, Hanghang Xia, Xiaoyan Yang, Peng Zhao, ShiChang Chen, Gaofeng Wang
DOI: 10.1002/mop.70527
Cited by: 1
References: 26

Abstract

ABSTRACT To achieve efficient modeling of unidirectional fine structure and accurate analysis of far‐field characteristics, a practical scheme applying the nonuniform grid (NG) and convolution perfectly matched layer (CPML) in the hybrid implicit‐explicit (HIE) finite‐difference time‐domain (FDTD) method is investigated. The numerical stability of the proposed method is rigorously demonstrated analytically, and its effectiveness is verified by simulation analysis and experimental comparison of antenna examples. The computational efficiency is improved 16.7% compared to the HIE‐FDTD method, and memory usage is significantly reduced through targeted discretization with NG and stability maintenance via CPML.

Fields of Study & Subjects

Electromagnetic Simulation and Numerical Methods Electromagnetic Scattering and Analysis Microwave Engineering and Waveguides

Publication details

Journal / source
Microwave and Optical Technology Letters
Publisher
Wiley
Volume
68
Issue
2
Publication date
1 February 2026
Language
EN