Plane wave scattering on Van-Atta electromagnetic reflector

The paper presents results of Van Atta Array scattering characteristics research. The research was done for an array consisted of a set of parallel-plate waveguides with apertures located on the same plane for two different configurations: 1) the apertures are separated with impedance flange (Figure 1) and 2) the apertures are separated with semi-infinite parallel-plate waveguides - excited waves go to infinity (Figure 2).