Optimization of radar cross section of N-port loaded scatterers

A procedure for obtaining the reactive loads of an
N
-port loaded scatterer to maximize the radar cross section is given. The method involves obtaining the real port currents which maximize radiation power gain and then resonating these currents to make them the dominant characteristic mode of the body.If the scatterer is loss-free and the loads are closely spaced, a large but very frequency sensitive scattering cross section is obtained. This behavior is basically the same as that of supergain behavior in antenna theory.