Contents I. Introduction
Over the past few decades, researchers have conducted in-depth studies and discussions on the scattering and radiation of antennas. This includes research on the basic theory of antenna scattering in the last century [1]. By loading impedance at the load end, researchers have studied how to control electromagnetic scattering by adding load impedance, thereby minimizing antenna RCS to the greatest extent possible [2] - [6]. As further support for this method, researchers have used circulators and phase shifters at the back end of antennas to adjust the echoes in the circuit to eliminate radar echoes [7]. There has also been research on the relationship between antennas as scattering objects and radiating objects [8].
