Phased array antenna and its manufacturing method

H - Electricity – 01 – Q

Patent

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Details

H01Q 21/06 (2006.01) H01Q 3/26 (2006.01) H01Q 3/30 (2006.01) H01Q 21/00 (2006.01) H01Q 23/00 (2006.01)

Patent

CA 2356275

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), phase shifters (17) for switching the phases of RF signals transmitted/received at the respective radiating elements, and a distribution/synthesis unit (14) are formed on different layers. Phase shift circuits (17A - 17D) are individually driven by a driver unit (12), and switches (17S) used in the phase shifter are simultaneously formed together with other wiring patterns on a layer on which the phase shifter is formed.

Cette antenne en réseau à éléments en phase, peu coûteuse, est de taille relativement réduite même si le nombre d'éléments rayonnants a été multiplié pour accroître le gain. Elle est constituée d'une structure multicouche dont les couches sont pourvues d'un grand nombre d'éléments rayonnants (15) et de compensateurs de phase (17) déphasant, chacun, la phase d'un signal à haute fréquence émis/reçu par l'élément rayonnant correspondant. Elle comporte également un répartiteur/synthétiseur (14). Les circuits de compensation de phase (17A à 17D) constituant les compensateurs de phase (17) sont commandés par des circuits d'attaque (12). L'antenne comprend également un commutateur (17S), utilisé pour le compensateur de phase, ainsi qu'un réseau de fils sur la couche portant les compensateurs de phase (17).

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