The integro-differential equation for the current distribution based on
the electric field operator is called the electric field integral equation
(EFIE).
In this section, we are interested in the electric field operator equation.
The method of moments is applied to the electric field boundary value
equation to
obtain a set of linear equations for the induced electric surface current on
the surface of a scatterer. We shall give a derivation of the
operator equation in
Section , and we will concentrate on evaluating the so-called
impedance matrix numerically in section
.