Antenna and multi-beam antenna system that includes compact sources and satellite telecommunication system that includes at least one such antenna

摘要

Multiple beam antenna with several sources per beam that includes at least one reflector (26) and a network of several sources (10, 10a, 10b, 10c, 10d, 10'a, 10'c) that illuminate the reflector (26) , the sources (10, 10a, 10b, 10c, 10d, 10'a, 10'c) being associated in several groups (G1, G2, G3, ..., GN) deflated with respect to each other according to two directions X , And of a plane placed in the focus of the reflector, each group including the same number of sources, characterized in that each source (10, 10a, 10b, 10c, 10d, 10'a, 10'c) includes a polarizer (12) linked to a radiant element (11) and two diplexers (15, 18) integrated respectively in two polarizer output paths (13, 14), each diplexer including two output ports, forming the four output ports of the two diplexers four ports (16, 17, 19, 20) of the source, the four ports operating in four different colors, each color being defined by a pair (F1, P1), (F1, P2), (F2, P1), (F2 , P2) of values of frequency and polarization and because all sources belonging to the same group (G1 to GN) include first ports (16) that have the same first color (P1, F1) cloned together by first circuits (C1, C3, D1 ) dedicated distribution to form a first beam and third ports (19) that have the same third color (P2, F1) cloned together by a few second circuits (C2, C4, D2) dedicated distribution to form a second beam, being the second and fourth ports corresponding to the second and fourth color of each source of the group suitable to be cloned to the corresponding ports of the sources of an adjacent group.