Multi-beam telecommunication antenna onboard a high-capacity satellite and related telecommunication system

摘要

A high-throughput multi-beam telecommunication antenna is configured to cover a geographical area from a geostationary orbit.;It comprises a single reflector and a feed block configured so that each elementary feed is able to generate a different unique beam, the angular separation of any two adjacent primary beams is substantially equal to the angular separation of any two adjacent secondary beams, and the spillover energy losses associated with each source are between 3 and 10 dB, preferably between 3 and 7.5 dB.

主权项

1. A multi-beam telecommunication antenna intended to equip a high-throughput telecommunication payload to cover, in transmission and/or reception, a geographic area from a geostationary orbit, able to be mechanically mounted on one or two satellite platforms and to be electromagnetically coupled to a repeater, comprising:
at least one radioelectric reflector, and an associated feed block, formed by a plurality of elementary radioelectric feeds arranged in a plane, the plurality of elementary radioelectric feeds being configured to illuminate the reflector by electromagnetic radiation in a frequency band and/or to be illuminated by electromagnetic radiation in a frequency band reflected by the reflector according to a primary multi-beam set of adjacent primary beams distributed in at least one spatially connected set of adjacent primary beams, any two adjacent primary beams being separated by a first angular separation θS1, the reflector being configured to reflect part of the electromagnetic energy emitted by the feed block and/or to intercept part of the electromagnetic energy emitted from the geographical area, according to a secondary multi-beam set of secondary adjacent reflected beams in at least one spatially connected set of adjacent secondary beams, any two adjacent secondary beams being separated by a second angular separation θS2, wherein the reflector is unique, and the feed block is dimensioned and arranged so that each feed can generate and/or receive a different unique beam and so that the first angular separation θS1 is substantially equal to the second angular separation θS2, and the spillover energy losses associated with each feed are between 3 and 10 dB.