Accelerated FDFD Method Based on GRHSS for Electromagnetic Analysis of Dispersive Media

Bin Zou; Zihao Ma; Lamei Zhang

doi:10.1109/LAWP.2025.3585856

Accelerated FDFD Method Based on GRHSS for Electromagnetic Analysis of Dispersive Media

Bin Zou^*
, Zihao Ma
, Lamei Zhang

^*Corresponding author for this work

School of Electronics and Information Engineering, Harbin Institute of Technology

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

Abstract

In this letter, a finite-difference frequency-domain (FDFD) scheme with a stable iterative solver is proposed to solve the electromagnetic field from objects made of dispersive media. The ill-conditioned complex matrix generated by FDFD is transformed into an equivalent 2 × 2 real form, and the Hermitian and skew-Hermitian splitting method is extended to handle the asymmetric linear system. The accuracy and stability of the proposed method are demonstrated through comparison to other frequency-domain numerical methods.

Original language	English
Pages (from-to)	3198-3202
Number of pages	5
Journal	IEEE Antennas and Wireless Propagation Letters
Volume	24
Issue number	9
DOIs	https://doi.org/10.1109/LAWP.2025.3585856
State	Published - 2025
Externally published	Yes

Keywords

Dispersive materials
electromagnetic (EM) analysis
finite-difference frequency-domain (FDFD)
iterative solver

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10.1109/LAWP.2025.3585856

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title = "Accelerated FDFD Method Based on GRHSS for Electromagnetic Analysis of Dispersive Media",

abstract = "In this letter, a finite-difference frequency-domain (FDFD) scheme with a stable iterative solver is proposed to solve the electromagnetic field from objects made of dispersive media. The ill-conditioned complex matrix generated by FDFD is transformed into an equivalent 2 × 2 real form, and the Hermitian and skew-Hermitian splitting method is extended to handle the asymmetric linear system. The accuracy and stability of the proposed method are demonstrated through comparison to other frequency-domain numerical methods.",

keywords = "Dispersive materials, electromagnetic (EM) analysis, finite-difference frequency-domain (FDFD), iterative solver",

author = "Bin Zou and Zihao Ma and Lamei Zhang",

year = "2025",

doi = "10.1109/LAWP.2025.3585856",

language = "英语",

volume = "24",

pages = "3198--3202",

journal = "IEEE Antennas and Wireless Propagation Letters",

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T1 - Accelerated FDFD Method Based on GRHSS for Electromagnetic Analysis of Dispersive Media

AU - Zou, Bin

AU - Ma, Zihao

AU - Zhang, Lamei

PY - 2025

Y1 - 2025

N2 - In this letter, a finite-difference frequency-domain (FDFD) scheme with a stable iterative solver is proposed to solve the electromagnetic field from objects made of dispersive media. The ill-conditioned complex matrix generated by FDFD is transformed into an equivalent 2 × 2 real form, and the Hermitian and skew-Hermitian splitting method is extended to handle the asymmetric linear system. The accuracy and stability of the proposed method are demonstrated through comparison to other frequency-domain numerical methods.

AB - In this letter, a finite-difference frequency-domain (FDFD) scheme with a stable iterative solver is proposed to solve the electromagnetic field from objects made of dispersive media. The ill-conditioned complex matrix generated by FDFD is transformed into an equivalent 2 × 2 real form, and the Hermitian and skew-Hermitian splitting method is extended to handle the asymmetric linear system. The accuracy and stability of the proposed method are demonstrated through comparison to other frequency-domain numerical methods.

KW - Dispersive materials

KW - electromagnetic (EM) analysis

KW - finite-difference frequency-domain (FDFD)

KW - iterative solver

UR - https://www.scopus.com/pages/publications/105009978820

U2 - 10.1109/LAWP.2025.3585856

DO - 10.1109/LAWP.2025.3585856

M3 - 文章

AN - SCOPUS:105009978820

SN - 1536-1225

VL - 24

SP - 3198

EP - 3202

JO - IEEE Antennas and Wireless Propagation Letters

JF - IEEE Antennas and Wireless Propagation Letters

IS - 9

ER -

Accelerated FDFD Method Based on GRHSS for Electromagnetic Analysis of Dispersive Media

Abstract

Keywords

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