Phased array antenna and method of manufacturing the same

H - Electricity – 01 – Q

Patent

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Details

H01Q 21/06 (2006.01) H01Q 3/26 (2006.01) H01Q 21/00 (2006.01) H01Q 23/00 (2006.01)

Patent

CA 2356265

A relatively small phased array antenna is formed at a low cost even if the number of radiating elements increases in order to improve the gain. The phased array antenna has a multilayered structure in which a number of radiating elements (15), a phase shift unit (16) for changing the phase of an RF signal transmitted/received at each radiating element, and a distribution/synthesis unit (14) are formed on different layers. Signal lines (X1 - Xm) and scanning lines (Y1 - Yn) are wired on a phase control layer (35) to connect phase shift units to each other in a matrix. The signal lines and the scanning lines are matrix-driven by selection units (12X, 12Y) so that desired phase shift amounts are set to phase shift units located at the intersections of the signal and scanning lines. In addition, switches (17S) of a phase shifter (17) are formed at once on the phase control layer. 56

L'invention porte sur une antenne à balayage électronique relativement petite et économique, même si le nombre de radiateurs est accru pour augmenter le gain. Ladite antenne présente une structure multicouche dont chacune des couches comporte un grand nombre de radiateurs (15), des unités de déphasage (16) décalant chacune la phase d'un signal à haute fréquence émis ou reçu par le radiateur correspondant, et une unité (14) de répartition/synthèse. Les lignes de signaux (X1 à Xm) et les lignes de balayage (Y1 à Yn) sont disposées sur une couche de commande de phase (35) de manière à grouper les unités de déphasage dans une matrice. Les unités de sélection (12X, 12Y) commandent par matrice les lignes de signaux et les lignes de balayage pour fixer la quantité désirée de déphasage pour l'unité de décalage située à l'intersection. Les commutateurs (17S) de déphaseurs (17) prévus, sont tous montés sur la couche de commande de phase.

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