H - Electricity – 01 – Q
Patent
H - Electricity
01
Q
351/12
H01Q 3/26 (2006.01) H01Q 3/40 (2006.01) H01Q 25/00 (2006.01) H03F 3/60 (2006.01)
Patent
CA 2026066
24 ABSTRACT OF THE DISCLOSURE A multibeam antenna comprising Ne feed elements and emitting Nb beams each generated by a group of Nc elements has a feed device comprising a set of Nc power dividers. These power dividers are unitary orthogonal distribution matrix power dividers of order P, where P is equal to the power of two equal to or immediately higher than the ratio Ne/Nc. the outputs of the dividers are connected to the various elements in such a way that each element of one of the aforementioned groups contributing to a beam is connected to a different power divider and so that adjacent beams share feed elements. A beam forming network has P x Nc outputs connected to amplifiers in turn connected to the inputs of the power dividers. This network has Nb inputs. The beam forming network is usually a low-level network. The device finds a specific application in satellite communications.
Agence Spatiale Europeenne
Robic
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