Abstract
Scattering from large, open cavity structures is of importance in a variety of electromagnetic applications. In this paper, we propose a new well conditioned integral equation for scattering from general open cavities embedded in an infinite, perfectly conducting half-space. The integral representation permits the stable evaluation of both the electric and magnetic field, even in the low-frequency regime, using the continuity equation in a post-processing step. We establish existence and uniqueness results, and demonstrate the performance of the scheme in the cavity-of-revolution case. High-order accuracy is obtained using a Nyström discretization with generalized Gaussian quadratures.
Original language | English (US) |
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Pages (from-to) | 1-16 |
Number of pages | 16 |
Journal | Journal of Computational Physics |
Volume | 345 |
DOIs | |
State | Published - Sep 15 2017 |
Keywords
- Axisymmetric
- Cavity scattering
- Electromagnetic
- Integral equation
- Maxwell
ASJC Scopus subject areas
- Numerical Analysis
- Modeling and Simulation
- Physics and Astronomy (miscellaneous)
- General Physics and Astronomy
- Computer Science Applications
- Computational Mathematics
- Applied Mathematics