Electromagnetic Scattering From Dielectrics--A Two-Dimensional Integral Equation Solution
ROME LAB HANSCOM AFB MA
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An accurate determination of the electromagnetic scattering cross section of many realistic targets must account for their being multi-dimensional and penetrable by the incident EM wave. An existing volume integral equation formulation of EM fields within continuous source regions is well-suited to address this problem. We simply specify the generalized source region of this formulation to be a dielectric body in which currents are induced by the incident wave, and which then re-radiates the scattered wave. The relation Etot Einc Escat yields a matrix equation to be solved for the unknown currents, which in turn directly determine the scattering cross section. Numerical results are presented for a homogenous, two-dimensional, rectangular target for TE and TM polarizations. The role of the source dyadic term in improving the accuracy of the scattering cross section is investigated both theoretically and numerically.... Scattering, Volume integral equations, Dielectric cylinders.
- Numerical Mathematics
- Electricity and Magnetism