A pseudospectral technique for the discrete reconstruction of the three-dimensional equivalent-current density

In this paper, a new technique is developed to reconstruct the three dimensional equivalent-current density associated with a dielectric scatterer with an arbitrary shape. This technique is based on the solution of an integral equation using a pseudospectral method where part of the integrand represents the unknown. The other part of the integrand is the known dyadic Green´s function. This technique generates accurate results, which makes it attractive for electromagnetic inversion of scatters from inhomogeneous dielectric bodies. An example is given to demonstrate the accuracy of the developed technique