High-order Calderón multiplicative preconditioner for time domain electric field integral equations

Marching-on-in-time (MOT) time domain electric field integral equation (TDEFIE) solvers are often used to analyze scattering of transient electromagnetic fields from perfect electrically conducting (PEC) surfaces. Unfortunately, just like their frequency domain counterparts, MOT-TDEFIE solvers suffe...

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Bibliographic Details
Main Authors: Valdes, F., Ghaffari-Miab, M., Andriulli, F. P., Cools, K., Kotulski, J. D., Michielssen, E.
Format: Conference Proceeding
Language:English
Subjects:
Antennas
Electric breakdown
Electric fields
Laboratories
Time domain analysis
USA Councils
Online Access:Request full text
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Summary:Marching-on-in-time (MOT) time domain electric field integral equation (TDEFIE) solvers are often used to analyze scattering of transient electromagnetic fields from perfect electrically conducting (PEC) surfaces. Unfortunately, just like their frequency domain counterparts, MOT-TDEFIE solvers suffer from dense-mesh breakdown when the linear dimensions of the patches in a surface mesh are small compared to the space time step and/or the order of the spatial basis functions used to expand the surface currents is high. This breakdown phenomenon manifests itself in the form of ill conditioned MOT system matrices and slow convergence rates of the MOT iterative solver.
ISSN:1522-3965
1947-1491
DOI:10.1109/APS.2011.5996994