Antenna system with two grids of spots with nested complementary meshes

摘要

An antenna system is able to cover a geographical zone with two grids of spots with nested meshes, shifted one with respect to the other. The multi-beam system covers a geographical zone decomposed into a plurality of spots, the antennas each comprising an array of radiating elements able to receive and/or to transmit radioelectric signals, and being configured so as to cover, in reception and/or in transmission, the zone with two grids of spots, several spots of the first grid, generated by a first antenna, being positioned according to a first geometric pattern, so that points are situated substantially equidistantly from several adjacent spots, several spots of the second grid, that are generated by a second antenna, being positioned according to a second geometric pattern chosen as a function of the first geometric pattern, such that several spots of the second grid are centered on the points.

主权项

1. A multi-beam antenna system for covering a geographical zone decomposed into a plurality of spots, the system comprising:
two antennas for reception and/or for transmission, wherein the antennas are configured so as to cover said zone with two grids of spots, each antenna comprising a plurality of radiating elements each producing a spot, the radiating elements being arranged so that several spots of the first grid, that are generated by a first antenna, are aligned along two substantially orthogonal axes, so that points exist that are situated substantially equidistantly from the centres of four adjacent spots, several spots of the second grid, that are generated by the second antenna, being centred on said points.