Reconfigurable transmission antenna
AssigneeAlcatel Espace
InventorsRegis Lenormand, Didier Rene, Christian Rigal
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Abstract
The invention relates to a reconfigurable transmission antenna comprising a reflector (10) for energy focussing, and an array (11) of source elements situated in the focal region of the reflector, so that the electromagnetic field is synthesized in said region, wherein a spot (SPi) is the result of radiation from a number of sources that is fixed and identical for all the spots; any one source participating at any one time in radiating one spot at the most, and high-level switching being used to reconfigure the spots by selecting the sources that participate in a given spot. Application to the space telecommunications field in particular.
Claims6
A reconfigurable multi-access multi-spot transmission antenna comprising:
- a reflector (10) for energy focussing, an array (11) of source elements situated in the focal region of the reflector, so that the electromagnetic field is synthesized in said region, said antenna being characterized in that each spot (SPi) is constituted by juxtaposing a fixed identical number n of beams from n sources;
- each of the sources delivering the power transmitted by the corresponding spot divided by the number n;
- any one source participating at any one time in radiating one spot at the most;
- and in that a matrix high-power amplifier receives input signals to be radiated by said reconfigurable multi-access multi-spot transmission antenna, and outputs corresponding amplified signals to a high-level switching matrix (24) which is provided to reconfigure each spot by selecting the sources that participate in the spot.
Dependencies are inferred from the claim text.