Antenna arrays

H - Electricity – 01 – Q

Patent

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H01Q 25/00 (2006.01) H01Q 21/06 (2006.01)

Patent

CA 2046301

A patch antenna array having multiple beam-forming capability is formed as a feed network (15) on a lower microstrip substrate with patches (13) overlaying these on an upper substrate. The patch array consists of a number of linear series-connected patch arrays (13a, 13b, 13c) each array being resonant and may have open circuits at each end. A travelling wave arrangement of feed lines (15a, 15b, 15c) is provided and in one embodiment the total number of beams which may be generated is twice the number of feed lines. The invention is useful in small satellite communication earth terminals and is suitable for operation in the region of 10 GHz.

L'invention est une antenne à plaques multifaisceau formée sous la forme d'un réseau d'alimentation (15) sur un substrat microruban de dessous avec des plaques (13) superposées montées sur un substrat de dessus. Ces plaques sont disposées en groupes linéaires montés en série (13a, 13b, 13c), chacun d'eux étant un groupe résonant et pouvant comporter des circuits ouverts à chaque extrémité. Une architecture de lignes d'alimentation à ondes progressives (15a, 15b, 15c) est utilisée et, dans une concrétisation particulière de l'invention, le nombre total de faisceaux qui peuvent être produits est le double du nombre de lignes d'alimentation. L'invention est utile aux petites stations terriennes de communication par satellite et peut fonctionner aux environs de 10 GHz.

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