Dual polarised multi-range antenna

H - Electricity – 01 – Q

Patent

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Details

H01Q 21/29 (2006.01) H01Q 1/24 (2006.01) H01Q 5/00 (2006.01) H01Q 21/10 (2006.01) H01Q 21/26 (2006.01)

Patent

CA 2331681

The invention relates to an improved dual polarised multi-range antenna, comprising a first and a second radiation module (1, 3) for transmitting or receiving a first frequency band and a second frequency band offset from the first. Said dual polarised multi-range antenna is characterised by the following: seen from above the antenna, the second, additional, radiation module (3) provided for the upper frequency range is located inside the dipole square of the first radiation module (1); the second radiation module (3) consists of dipolar elements (3a) which are oriented orthogonally in relation to each other; the dipolar elements (3a) of the second radiation module (3) are parallel or vertical in relation to the dipolar elements (1a) of the first radiation module (1), forming a dipole square; and the ratio of the middle frequency of the upper frequency band to that of the lower frequency band is between 1,5 and 4.

Une antenne multigamme à polarisation double perfectionnée, comportant un premier et un deuxième module excitateur (1, 3) pour envoyer ou recevoir une première bande de fréquences et une deuxième bande de fréquences décalée par rapport à celle-ci, se distingue par les caractéristiques suivantes: le deuxième module excitateur (3) complémentaire destiné à la gamme fréquencielle supérieure est disposé, vu de dessus, sur l'antenne à l'intérieur du carré du dipôle du premier module excitateur (1), le deuxième module excitateur (3) est constitué d'éléments dipolaires (3a) à orientation orthogonale les uns par rapport aux autres, les éléments dipolaires (3a) du deuxième module excitateur (3) sont orientés parallèlement ou perpendiculairement aux éléments dipolaires (1a) du premier module excitateur (1) sous forme d'un carré de dipôles, et le rapport de la fréquence centrale de la bande de fréquences supérieure et de celle de la bande de fréquences inférieure se situe entre 1,5 et 4.

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