H - Electricity – 01 – Q
Patent
H - Electricity
01
Q
H01Q 21/30 (2006.01) H01Q 5/00 (2006.01) H01Q 9/16 (2006.01) H01Q 19/10 (2006.01)
Patent
CA 2332630
The invention relates to an improved multiband antenna for transmission and reception in which the combiner circuit, which is necessary under the state of the art, is simplified. According to the invention no separate band-pass filters are required. Instead the band-pass filters are provided by the configuration of the antenna itself. The above multiband antenna is also characterized in that the frequency-selective components (11', 11'') are each integrated into the corresponding antenna device (7', 7'') and said frequency- selective components (11', 11'') for each corresponding dipole antenna device (7', 7'') are provided with a dipolar structure which is created by appropriate configuration of the active electrical length of the corresponding balancing element (25, 31) and the electrical length of the branch line (5, 5'') between the branching point (5) and the infeed point of the corresponding antenna device (7, 7'').
L'invention concerne une antenne multibande améliorée, permettant d'émettre et de recevoir, dans laquelle la structure du circuit combinateur, nécessaire dans l'état actuel de la technique, est simplifiée. A la place des filtres passe-bande séparés, elle fait appel à des filtres constitués par la structure même de l'antenne. Cette antenne multibande présente les caractéristiques suivantes: les composants accordés (11', 11''), intégrés au dispositif antenne, présentent, pour chaque antenne doublet (7', 7''), une structure dipolaire formée par la longueur électrique efficace de la partie d'équilibrage des circuits (25, 31) et la longueur électrique de la branche (5', 5'') comprise entre la bifurcation (5) et le point d'injection de ladite antenne (7', 7'').
Kathrein-Werke Kg
Robic
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