Alcatel Espace

Societe Anonyme Dite : Alcatel Espace

Jean-Philippe Marre

Regis Lenormand

Gerard Raguenet

Christian Rigal

Bernard Coulomb

Antoine Clerino

Charles Villemur

Michel Tatard

Michel Coustere

Albert Cerro

Benoit Hanin

Jacques Neron

The invention provides a multibeam antenna comprising:

High capacity multibeam antenna with electronic scanning in transmission

An electronically scanned antenna comprising an array (11) of elementary sources, an energy-focusing reflector (10), and feed and control electronics, with the array (11) being situated in the focal zone of the reflector, and in which elementary sources that are not used simultaneously are grouped together in classes (Ci) in which only one source can be active at a time, with all of the sources in each class (Ci) being interconnected by a passive combiner (40) for that class. The invention is applicable in particular to space telecommunications.

Electronically scanned antenna

The invention relates to an electronically scanned antenna comprising an array (11) of elementary sources, an energy-focusing reflector (10), and feed and control electronics; the array (11) is situated in the focal zone of the reflector, while the feed and control electronics includes a plurality of attenuator and phase shifter circuits (24) controlled by a control unit (27), with said circuits having their outputs connected to at least one combiner (28). The invention is particularly suitable for space telecommunications.

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Cugnaux, France

Jean-Philippe Marre