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Scattering by arbitrarily cross-sectioned layered, lossy dielectric cylinders

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2 Author(s)
Te-Kao Wu ; Electrical Eng. Dept., Mississippi Univ., University, MS, USA ; Tsai, Leonard L.

The scattering properties of TM or TE illuminated lossy dielectric cylinders of arbitrary cross section are analyzed by the surface integral equation techniques. The surface integral equations are formulated via Maxwell's equations, Green's theorem, and the boundary conditions. The unknown surface fields on the boundaries are then calculated by flat-pulse expansion and point matching. Once the surface fields are found, scattered field in the far-zone and radar cross section (RCS) are readily determined. RCS thus obtained for circular homogeneous dielectric cylinders and dielectric coated conducting cylinders are found to have excellent agreements with the exact eigenfunction expansion results. Extension to arbitrary cross-sectioned cylinders are also obtained for homogeneous lossy elliptical cylinders and wedge-semicircle cross-sectioned cylinders, with and without a conducting cylinder in its center. RCS dependences on frequency and conductivity as well as the matrix stability problem of this surface integral equation method are also examined.

Published in:

Antennas and Propagation, IEEE Transactions on  (Volume:25 ,  Issue: 4 )

Date of Publication:

Jul 1977

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