"A Fast AWE-Augmented Wideband Discontinuous Galerkin Frequency-Domain " by Shi Min Liu, Li (Lijun) Jun Jiang et al.
 

Abstract

In this research, a discontinuous Galerkin frequency-domain (DGFD) method is proposed to solve the electromagnetic wave equations. Different to the explicit time-domain analysis, the electric-field and magnetic-field in frequency-domain wave equations are coupled together implicitly, thus the established matrix equation is globally coupled, which is computational expensive if solving it directly. To address this issue, a Block-diagonal preconditioner and a restriction operator are applied to the matrix equation, which splits the global matrix into a number of small local matrix systems pertinent to each subdomain. Then, a direct solver can be employed to solve them with a FETI-like procedure. Besides, to further speed up the wideband analysis, the asymptotic waveform evaluation (AWE) is implemented into the DGFD solver, which only needs to calculate a few frequency points in a broadband. To benchmark the proposed algorithm, a SIW filter is investigated.

Department(s)

Electrical and Computer Engineering

Comments

National Natural Science Foundation of China, Grant 62071290

International Standard Book Number (ISBN)

978-166549658-2

Document Type

Article - Conference proceedings

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2024 Institute of Electrical and Electronics Engineers, All rights reserved.

Publication Date

01 Jan 2022

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