File:Parabolic antenna types2 fr.svg

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Français : Diagramme montrant les types commun d'alimentation d'une antenne parabolique. Les réflecteurs sont en rouge, le cornet d’alimentation envert et le rayonnement est en noir. Le types sont : (1) Source centrée au point focal de la parabole, le type le plus commun qui a comme inconvénient le blocage partiel du faisceau par la source. (2) La source décalée où le cornet d'alimentation se trouve toujours au point focal mais le faisceau est dirigé vers le réflecteur qui n'est que la partie supérieur d'une parabole. Cela évite l'ombrage par la source. (3) Cassegrain où le source illumine un petit réflecteur secondaire convexe hyperbolique qui renvoie le faisceau vers le réflecteur primaire. Cela permet une antenne plus compacte etse retrouve le plus souvent dans les télescopes. (4) Grégorien, similaire au précédent mais le réfelcteur secondaire est un ellipsoïde concave
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This is a retouched picture, which means that it has been digitally altered from its original version. The original can be viewed here: Parabolic antenna types2.svg: . Modifications made by Pierre cb.

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  • File:Parabolic_antenna_types2.svg licensed with PD-self
    • 2011-07-13T05:43:35Z Chetvorno 850x1820 (23149 Bytes) Added to label for "axial feed" antenna a more common name for this type of feed: "front feed"
    • 2010-12-02T14:39:03Z Chetvorno 850x1820 (23037 Bytes) Made rays thicker
    • 2010-11-26T11:33:10Z Chetvorno 850x1820 (21533 Bytes) Increased size of font for readability
    • 2010-11-26T01:10:18Z Chetvorno 800x1930 (21126 Bytes) == Summary == {{Information |Description={{en|Diagram showing types of parabolic antenna feeds.}} |Source={{own}} |Date=2010-11-25 |Author=[[User:Chetvorno|Chetvorno]] |Permission=I, Chris Burks ([[User:Chetvorno|Chetvorno]])

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current04:04, 22 May 2012Thumbnail for version as of 04:04, 22 May 2012850 × 1,820 (23 KB)Pierre cb (talk | contribs)== {{int:filedesc}} == {{Information |Description={{fr|1=Diagramme montrant les types commun d'alimentation d'une antenne parabolique. Les réflecteurs sont en <font color="red">rouge</font>, le cornet d’alimentation en<fo...

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