TY - GEN
T1 - Frequency-independent scattering for the large sphere
AU - Sha, Wei E.I.
AU - Chew, Weng Cho
N1 - Copyright:
Copyright 2010 Elsevier B.V., All rights reserved.
PY - 2009
Y1 - 2009
N2 - The high frequency scattering of a scalar plane wave from an impenetrable sphere with the diameter of one thousand wavelength is treated by the saddle-point technique and the numerical steepest descent method. The far-field solution for the sphere is computed in the observation angle range of 0 to 180 degree. In particular, a novel numerical steepest descent method is proposed to overcome the breakdown of the traditional saddle-point technique in the forward region. Numerical results show that the CPU time for the far-field calculation is frequency-independent with controllable error. This work can be used to benchmark future works in frequency-independent methods.
AB - The high frequency scattering of a scalar plane wave from an impenetrable sphere with the diameter of one thousand wavelength is treated by the saddle-point technique and the numerical steepest descent method. The far-field solution for the sphere is computed in the observation angle range of 0 to 180 degree. In particular, a novel numerical steepest descent method is proposed to overcome the breakdown of the traditional saddle-point technique in the forward region. Numerical results show that the CPU time for the far-field calculation is frequency-independent with controllable error. This work can be used to benchmark future works in frequency-independent methods.
KW - Frequency independent
KW - High frequency scattering of sphere
KW - Numerical steepest descent method
KW - Saddle-point technique
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U2 - 10.1109/APMC.2009.5384292
DO - 10.1109/APMC.2009.5384292
M3 - Conference contribution
AN - SCOPUS:77950667239
SN - 9781424428021
T3 - APMC 2009 - Asia Pacific Microwave Conference 2009
SP - 854
EP - 857
BT - APMC 2009 - Asia Pacific Microwave Conference 2009
T2 - Asia Pacific Microwave Conference 2009, APMC 2009
Y2 - 7 December 2009 through 10 December 2009
ER -