Enhanced A-EFIE With Perturbation Method

The recently developed augmented electric field integral equation (A-EFIE) remedies the well-known low-frequency breakdown. However, it loses accuracy of current when applied to certain low-frequency applications like plane wave scattering. This paper addresses the low-frequency inaccuracy problem,...

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Bibliographic Details
Published in:IEEE transactions on antennas and propagation 2010-10, Vol.58 (10), p.3256-3264
Main Authors: QIAN, Zhi-Guo, CHO CHEW, Weng
Format: Article
Language:English
Subjects:
Antennas
Applied classical electromagnetism
Applied sciences
Augmented electric field integral equation (A-EFIE)
Breakdown
Diffraction, scattering, reflection
Electric breakdown
Electromagnetic fields
Electromagnetic scattering
Electromagnetic wave propagation, radiowave propagation
Electromagnetism
electron and ion optics
Exact sciences and technology
Frequency locked loops
Fundamental areas of phenomenology (including applications)
Integral equations
loop-tree
low frequency
Mathematical analysis
Mathematical models
Matrix decomposition
Packaging
perturbation
Perturbation methods
Physics
Plane waves
Radiocommunications
Radiowave propagation
Remedies
Stability
Telecommunications
Telecommunications and information theory
Trees
Vectors (mathematics)
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Summary:The recently developed augmented electric field integral equation (A-EFIE) remedies the well-known low-frequency breakdown. However, it loses accuracy of current when applied to certain low-frequency applications like plane wave scattering. This paper addresses the low-frequency inaccuracy problem, and proposes a perturbation method as a remedy. A-EFIE with perturbation solves the same A-EFIE matrix system with updated right hand side vectors repeatedly to obtain the current and charge on different frequency orders as a perturbation series. This method does not require a search for the loop and tree basis, but the loop and tree currents can also be recovered. Numerical experiments validate the novel method.
ISSN:0018-926X
1558-2221
DOI:10.1109/TAP.2010.2055795