Integral equation algorithms for equivalent currents distribution retrieval over arbitrary three-dimensional surfaces

The following article describes a method for determination of equivalent currents over arbitrary surfaces from near field measurements. The proposed algorithm solves the electric field integral equations, introducing a mathematical representation of the currents based on their tangential components. This new formulation of the inverse radiation problem reduces the computational cost of the problem. On the other hand, the consideration of both electric and magnetic currents, according to the equivalence principles, supposes a better characterization of the electromagnetic equivalent problem at all aspect angles. The final goal is the diagnosis and characterization of antennas independently of the complexity of their geometry.