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- W199177965 abstract "Even with the advent of cutting-edge computing facilities on desktop computers, electromagnetic scattering simulations of moderately sized problems still faces major challenges. This is primarily due to the finer resolution requirement for lower wavelengths in the scatterer. Domain Decomposition (DD) methods are an apparent candidate to alleviate this difficulty. In this dissertation, the primary focus will be on the use of DD methods for the solution of Electric Field Integral Equations for dielectric objects. Novel variants of two classes of DD methods are investigated in this thesis; namely, the Buffered Block Forward Backward Methods (BBFB) and the Characteristic Basis Function Methods (CBFM). BBFB methods solve the discretised equations for finding the unknown field in a semi-iterative block-wise manner and march towards a complete solution. The BBFB method and its variants investigated in this work are confirmed not to be suitable for dielectric objects with higher permittivity and complex shapes. Some of the difficulties faced by the BBFB methods are due to the propagation of spurious edge effects appearing near the artificial boundaries that the BBFB method creates to decompose the object. The original CBFM is a Macro-domain Basis Function (MBF) based method which is free from some of the shortcomings of the FBM. Detailed investigation of the method shows that the CBFM can be tuned easily for the efficient analysis of electromagnetic scattering problems of dielectric objects. A novel modification of the CBFM is investigated and successfully implemented. This latest version of the CBFM is free from all the shortcomings that were reported for the other DD methods we came across. In principle, any large EM scattering problem can be solved on a personal computer using this novel method. vii" @default.
- W199177965 created "2016-06-24" @default.
- W199177965 creator A5036295856 @default.
- W199177965 date "2010-09-21" @default.
- W199177965 modified "2023-09-27" @default.
- W199177965 title "Efficient domain decomposition methods for the electromagnetic analysis of dielectric objects" @default.
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