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Antenne UHF montée sur le toit d'un véhicule
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ISBN10: 3841641865
ISBN13: 9783841641861
Publisher: Editions Notre Savoir
Published: Apr 15 2025
Pages: 52
Weight: 0.18
Height: 0.12 Width: 6.00 Depth: 9.00
Language: French
ISBN13: 9783841641861
Publisher: Editions Notre Savoir
Published: Apr 15 2025
Pages: 52
Weight: 0.18
Height: 0.12 Width: 6.00 Depth: 9.00
Language: French
Le développement récent dans le domaine des antennes est maintenant principalement axé sur la minimisation de la taille de l'antenne sans aucun effet sur ses performances. Le travail proposé présente une antenne UHF (400-520 MHz) à faible profil, polarisée verticalement, similaire à une antenne monopôle courte, avec une structure compacte et mécaniquement stable pour le montage sur le toit des véhicules lourds tels que les trains. Elle peut également être utilisée avec un plan de sol (surface du toit/rooftop) en tant qu'antenne de véhicule, ce qui est considéré comme avantageux car la direction souhaitée de la communication est en grande partie indépendante de l'orientation du véhicule. Elle est constituée d'une dimension inférieure à λ/32 en hauteur et λ/8 en dimension latérale. La simulation est réalisée à l'aide du programme CST Microwave Studio 2014. L'effet des paramètres de l'antenne sur la bande passante sera étudié.Il est facilement intégré sur le toit du véhicule avec un collage approprié. En outre, l'antenne proposée est une structure simple, un profil bas, un montage facile et une bande passante relativement bonne. La simulation et les résultats expérimentaux montrent également que l'antenne présente une excellente adaptation d'impédance de 50 Ω et qu'elle est presque omnidirectionnelle dans le plan horizontal sur une fraction majoritaire de la bande passante.
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