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Les Antennes Réceptrices Larges Bande (Ulb)
Paperback
Series: Omn.Pres.Franc.
Literary CriticismTechnology & Engineering
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ISBN10: 383817559X
ISBN13: 9783838175591
Publisher: Omniscriptum
Published: Feb 28 2018
Pages: 188
Weight: 0.62
Height: 0.43 Width: 5.98 Depth: 9.02
Language: French
ISBN13: 9783838175591
Publisher: Omniscriptum
Published: Feb 28 2018
Pages: 188
Weight: 0.62
Height: 0.43 Width: 5.98 Depth: 9.02
Language: French
Il s'agit de concevoir et de réaliser des antennes réceptrices à larges bandes de fréquences, de taille réduites et performantes dans toute la bande utile incluant les bandes ISM et WMTS, selon les restrictions tolérées par ces normes et destinés particulièrement à la télémétrie médicale. Toutefois, l'utilisation des structures à bandes de fréquences larges requiert des antennes dont les paramètres restent le plus constant possible sur toute la bande utile. Afin de satisfaire les spécifications citées ci-dessus, plusieurs structures ont été considérées. Ensuite, ces prototypes ont été réalisés pour valider notre procédé. Parmi ces derniers, la structure en forme de cloche a montré son efficacité dans l'application visée. Sa bande de d'opération s'étend de 0.42 à 4.5 GHz (avec une largeur de bande de l'ordre de 4.08 GHz et une bande passante égale à 165.85%). Mais bien que certains points restent à améliorer, les résultats de mesures obtenus sont satisfaisants surtout avec les valeurs acceptables du gain obtenu pour les différentes structures présentées dans cet ouvrage.
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