Experiments are presented on electromagnetic scattering by hyperbolic reflectors peripherally loaded by epoxid resin melted to graphite powder, made in the X-bande range in an anechoic electromagnetic room. The results are compared with the theoretical prediction carried out using both the Uniform Theory of Diffraction (UTD) extended to surface impedances and Physical Optics (PO). The effectiveness of the behaviour of a lossy material layer as a surface impedance as well as the effectiveness of such loading technique applied to the subreflector in order to control the radiation diagram, have been verified. The good agreement between experimental and computed data confirms the conclusions obtained theoretically.
Theoretical and experimental scattering by hyperbolic loaded dishes
DI MASSA, Giuseppe;
1985-01-01
Abstract
Experiments are presented on electromagnetic scattering by hyperbolic reflectors peripherally loaded by epoxid resin melted to graphite powder, made in the X-bande range in an anechoic electromagnetic room. The results are compared with the theoretical prediction carried out using both the Uniform Theory of Diffraction (UTD) extended to surface impedances and Physical Optics (PO). The effectiveness of the behaviour of a lossy material layer as a surface impedance as well as the effectiveness of such loading technique applied to the subreflector in order to control the radiation diagram, have been verified. The good agreement between experimental and computed data confirms the conclusions obtained theoretically.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
