Thales

Gérard Raguenet

Nicolas Chuberre

Ronan Sauleau

Olivier Courseille

Thierry Youssefi

Antonin Hirsch

Régis Lenormand

Jean-Michel Mateus

Jean-Michel Merour

Michel Salomon

Etienne Barritault

Didier Le Boulch

Mauro Ettorre

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.

Antenna system with two grids of spots with nested complementary meshes

The antenna with shared feeds for generating multiple beams includes a plurality of identical individual feeds spaced apart by a constant pitch, wherein the individual feeds are associated in identical subnetworks around a central individual feed, each subnetwork being intended to synthesize a beam, the individual feeds of each subnetwork being phase-coupled together by electromagnetic coupling, and two successive subnetworks include at least one individual feed in common and are offset by a distance corresponding to a predetermined number of pitches greater than or equal to one, being applicable in particular to the field of satellite telecommunications.

Antenna with shared feeds and method of producing an antenna with shared feeds for generating multiple beams

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Eaunes, France

Gérard Raguenet