Abstract
A generalized natural mode expansion theory for investigating arbitrary electromagnetic fields is presented. When an inhomogeneity is bounded with impenetrable boundaries, the field excited by arbitrary sources is expanded with a complete set of eigenmodes, which are classified into trapped modes and exterior modes. As the boundaries tend to infinity, trapped modes remain unchanged, while exterior modes form a continuum. In numerical studies, unbounded systems can be emulated by placing perfectly matched layers (PMLs) at finite extent. Simulation shows that only a few natural modes are prominent in expanding the excited field in a properly functioning device. Such a reduced modal picture can provide quick guidance as well as useful physical insight for engineering design and optimization of electromagnetic components and devices.
Recommended Citation
Q. I. Dai et al., "Generalized Natural Mode Expansion For Arbitrary Electromagnetic Fields," 2014 31th URSI General Assembly and Scientific Symposium, URSI GASS 2014, article no. 6929061, Institute of Electrical and Electronics Engineers, Oct 2014.
The definitive version is available at https://doi.org/10.1109/URSIGASS.2014.6929061
Department(s)
Electrical and Computer Engineering
International Standard Book Number (ISBN)
978-146735225-3
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
17 Oct 2014
