| 摘要 |
PROBLEM TO BE SOLVED: To provide an antenna and a multi-beam antenna system including compact feeds, and a satellite telecommunication system including at least one such antenna.SOLUTION: A multi-beam antenna includes an array of feeds illuminating a reflector (26), the feeds (10, 10a, 10b, 10c, 10d, 10'a, 10'c) being associated in a plurality of groups (G1 to GN). Each of feeds (10, 10a, 10b, 10c, 10d, 10'a, 10'c) includes a polarizer (12), two diplexers (15, 18), and four ports operating in four different colors. All the feeds belonging to the same group (G1 to GN) include a first port (16) having the same first color (P1, F1), or a second port (17) having the same second color (P1, F2), linked together to form a first beam and a third port (19) having the same third color (P2, F1), or a fourth port (20) having the same fourth color (P2, F2), linked together to form a second beam. |
