Efficient wideband electromagnetic scattering computation for frequency dependent lossy dielectrics using WCAWE
Bradley, Patrick, Brennan, ConorORCID: 0000-0002-0405-3869 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
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.
Metadata
Item Type:
Article (Published)
Refereed:
Yes
Uncontrolled Keywords:
barium compounds; computational complexity; electric field integral equations; electromagnetic wave scattering; lanthanum compounds; permittivity; titanium compounds;