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A stable integral equation for electromagnetic scattering from homogeneous dielectric bodies

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1 Author(s)
J. R. Mautz ; Dept. of Electr. & Comput. Eng., Syracuse Univ., NY

It is shown that a previously derived integral equation for electromagnetic scattering from a homogeneous dielectric body (see ibid., vol.AP-32, p.166-172, Feb. 1984) does not have a unique solution at resonant frequencies of the cavity formed by making the surface S of the body perfectly conducting and filling the region internal to S with the external medium. This integral equation was formulated so that an equivalent electric current radiates in the presence of the homogeneous external medium to produce the scattered field external to the body. A combination of equivalent electric and magnetic currents is used to formulate an integral equation whose solution is always unique

Published in:

IEEE Transactions on Antennas and Propagation  (Volume:37 ,  Issue: 8 )