Abstract
In this letter, we demonstrate an efficient preconditioning scheme for the eigenanalysis of inhomogeneously loaded rectangular cavities. Modeling the entire structure with the finite-difference frequency-domain (FDFD) method yields a large sparse eigenvalue problem. The desired interior eigen-spectrum is sought for by Arnoldi iterations with the shift-and-invert operation, where the inversion can only be performed iteratively in large-scale applications. A preconditioner is constructed to speed up the inversion. It can effectively shrink the spectrum of the governing matrix and can be solved for by using fast discrete sine and cosine transforms (DSTs and DCTs). Several numerical examples are included to illustrate the efficiency of the preconditioned eigenanalysis. © 2013 IEEE.
Recommended Citation
Q. I. Dai et al., "An Efficiently Preconditioned Eigenanalysis Of Inhomogeneously Loaded Rectangular Cavities," IEEE Antennas and Wireless Propagation Letters, vol. 12, pp. 58 - 61, article no. 6401150, Institute of Electrical and Electronics Engineers, Dec 2013.
The definitive version is available at https://doi.org/10.1109/LAWP.2013.2237747
Department(s)
Electrical and Computer Engineering
Keywords and Phrases
Fast discrete sine and cosine transforms; Finite-difference frequency domain (FDFD); Inhomogeneously loaded rectangular cavities; Preconditioner
International Standard Serial Number (ISSN)
1536-1225
Document Type
Article - Journal
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 2024 Institute of Electrical and Electronics Engineers, All rights reserved.
Publication Date
03 Dec 2013
