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Computational analysis of scattering by penetrable oblate spheroids using a model of dipoles located in complex space

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2 Author(s)
Erez, E. ; Dept. of Electr. Eng., Technion-Israel Inst. of Technol., Haifa, Israel ; Leviatan, Y.

The recently introduced extension of the current-model technique, which has facilitated a more efficient solution to problems of metallic scatterers whose periphery contains a variety of length-scales features, is applied to analyse scattering by penetrable bodies of similar shape. In the extension of the current-model technique, the coordinates of part of the elemental source centres assume complex values. In this way, the fields radiated by these sources have a beam-shaped pattern and they can better span the field scattered by the smooth parts of the air-body interface. The coordinates of the other source centres retain their conventional real values or have only a relatively small imaginary constituent. The fields radiated by these sources are used to span the field scattered by the rapidly varying parts of the air-body interface. The suggested approach is applied to analyse electromagnetic scattering by a penetrable oblate spheroid. It is found to render the solution computationally more effective at the expense of only a slight increase in its complexity

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Microwaves, Antennas and Propagation, IEE Proceedings  (Volume:142 ,  Issue: 3 )