ANTENNA WITH RESONATOR HAVING A FILTERING COATING AND SYSTEM INCLUDING SUCH ANTENNA

摘要

The invention relates to an antenna for transmitting or receiving electromagnetic waves at a working frequency f_t, that comprises a resonator with a filtering (49) coating that covers the major portion of the upper face of a reflector (22) located inside a cavity (36), said coating (40) being capable of removing all the electromagnetic waves having a frequency f_t and propagating in a direction parallel to the upper face of the reflector, without removing all the electromagnetic waves having a frequency f_t and propagating in a direction perpendicular to the upper face of the reflector.