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Efficient wideband electromagnetic scattering computation for frequency dependent lossy dielectrics using WCAWE

Bradley, Patrick and Brennan, Conor and Condon, Marissa (2009) Efficient wideband electromagnetic scattering computation for frequency dependent lossy dielectrics using WCAWE. IEEE Transactions on Antennas and Propagation, 57 (10). pp. 3274-3282. ISSN 0018-926X

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Abstract

This paper presents a model order reduction algorithm for the volume electric field integral equation (EFIE) formulation, that achieves fast and accurate frequency sweep calculations of electromagnetic wave scattering. An inhomogeneous, two-dimensional, lossy dielectric object whose material is characterized by a complex permittivity which varies with frequency is considered. The variation in the dielectric properties of the ceramic BaxLa4Ti 2+xO 12+3x in the <1 GHz frequency range is investigated for various values of x in a frequency sweep analysis. We apply the well-conditioned asymptotic waveform evaluation (WCAWE) method to circumvent the computational complexity associated with the numerical solution of such formulations. A multipoint automatic WCAWE method is also demonstrated which can produce an accurate solution over a much broader bandwidth. Several numerical examples are given on order to illustrate the accuracy and robustness of the proposed methods.

Item Type:Article (Published)
Refereed:Yes
Uncontrolled Keywords:barium compounds; computational complexity; electric field integral equations; electromagnetic wave scattering; lanthanum compounds; permittivity; titanium compounds;
Subjects:Engineering > Electronic engineering
DCU Faculties and Centres:DCU Faculties and Schools > Faculty of Engineering and Computing > School of Electronic Engineering
Research Initiatives and Centres > Research Institute for Networks and Communications Engineering (RINCE)
Publisher:Institute of Electrical and Electronics Engineers
Official URL:http://dx.doi.org/10.1109/TAP.2009.2028591
Copyright Information:©2009 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
ID Code:15493
Deposited On:15 Jul 2010 14:43 by DORAS Administrator. Last Modified 15 Jul 2010 14:43

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