Étude en optique physique d'une antenne a double réflecteur

Experimental and theoretical results concerning the physical optics of some antennas are presented. For the Cassegrain antenna, the field distribution on the auxiliary reflector is determined, the radiation in the near zone of the auxiliary reflector is calculated with respect to the primary reflector, and the electromagnetic field at a distance from the antenna is characterized. Results for two Cassegrain antennas, one a revolution antenna and the other an asymmetric dual reflector antenna, are presented.