Butler beam port combining for hexagonal cell coverage

H - Electricity – 01 – Q

Patent

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Details

H01Q 3/40 (2006.01)

Patent

CA 2288626

An antenna arrangement and a method for obtaining such an antenna arrangement are disclosed. The antenna arrangement utilizes the beam ports of a beam forming network (10), e.g. a Butler matrix, in connection with a multi-element radiator antenna for obtaining receive/transmit channels having more antenna beams within a desired coverage. At least one extra signal combiner (11) is utilized for combining at least one beam port of a number of ordinary beam ports with a nonadjacent beam port to form one receive/transmit channel (A) in a number of desired receive/transmit channels (A-B). The particular receive/transmit channel uses the at least one extra signal combiner for combining at least one of a number of ordinary beam ports with a nonadjacent beam port normally being terminated, for adapting power and sensitivity distributions for a desired cell coverage or for desired coverage of overlapping cells.

L'invention concerne un système d'antenne et un procédé permettant d'obtenir un tel système d'antenne. Le système d'antenne a recours aux ports faisceaux d'un réseau de mise en forme de faisceaux (10), par ex. une matrice de Butler, associé à une antenne à plusieurs éléments permettant d'obtenir des canaux réception/émission ayant plus de faisceaux d'antennes pour la couverture désirée. Au moins un mélangeur de signaux (11) supplémentaire vient mélanger au moins un port de faisceaux, parmi un certain nombre de ports de faisceaux ordinaires, à un port de faisceau non adjacent, constituant ainsi un canal réception/émission (A) dans un nombre souhaité de canaux de réception/émission (A - B). Le canal réception/émission particulier utilise le ou les mélangeurs de signaux supplémentaires pour combiner au moins l'un des ports de faisceaux ordinaires à un port de faisceaux normalement bouclé, afin d'adapter la puissance et les répartitions de sensibilité à une couverture de cellule souhaitée ou à une couverture souhaitée de cellules partiellement chevauchantes.

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