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Frontal RF pour radars à faisceau conique en bande C
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ISBN10: 6203900958
ISBN13: 9786203900958
Publisher: Editions Notre Savoir
Published: Apr 22 2025
Pages: 60
Weight: 0.21
Height: 0.14 Width: 6.00 Depth: 9.00
Language: French
ISBN13: 9786203900958
Publisher: Editions Notre Savoir
Published: Apr 22 2025
Pages: 60
Weight: 0.21
Height: 0.14 Width: 6.00 Depth: 9.00
Language: French
Mon sujet de recherche consiste à concevoir un frontal radar à faisceau balayant sophistiqué fonctionnant dans la bande C (4-8 GHz) avec une fréquence centrale de 5,8 GHz. Le frontal sera conçu de manière à pouvoir orienter son faisceau principal en spirale conique. Le matériel sera composé de deux modules. Le premier module est une antenne à réseau plan 4*4 dont le diagramme répond aux exigences des radars (c'est-à -dire un faisceau conique et un niveau de lobe latéral inférieur à -15 dB). Le deuxième module est un réseau de déphasage composé de coupleurs hybrides et de diodes varactors. Dans le cadre de ce projet, nous aurons besoin de connaissances en théorie des antennes, en micro-ondes et en électronique. L'objectif final de ce projet est de développer un réseau d'antennes planes avec capacité de balayage du faisceau, ce qui améliorera notre compréhension des antennes et des systèmes radar. Les livrables seront un réseau d'antennes planes et un réseau de commande de faisceau. Dans le passé, des radars à 2,4 GHz ont été conçus, mais leur diagramme de rayonnement n'était pas conforme aux systèmes radar pratiques. Nous aurons besoin de substrats FR4, de diodes pin et de diodes varactors comme ressources matérielles, et les outils logiciels utilisés seront Ansoft HFSS, ADS2009 et AutoCAD.
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