S. Alfonzetti et al., AN ITERATIVE SOLUTION TO SCATTERING FROM CAVITY-BACKED APERTURES IN APERFECTLY CONDUCTING WEDGE, IEEE transactions on magnetics, 34(5), 1998, pp. 2704-2707
In this paper it is shown how the Robin iteration procedure, already p
roposed by the authors for the solution of electromagnetic scattering
problems, can be easily adapted to scattering from cavities embedded i
n a perfectly-conducting wedge, The procedure couples a differential e
quation for the interior problem with an integral equation for the ext
erior one. A suitable choice of the Robin (mixed) boundary condition o
n the fictitious boundary dividing the interior and exterior domains a
voids resonances.