Patch dipole array antenna and associated method of making

Details Patch dipole array antenna and associated method of making Patch dipole array antenna and associated method of making

H - Electricity

01

Q

H01Q 9/28 (2006.01) H01Q 1/38 (2006.01) H01Q 9/16 (2006.01) H01Q 21/06 (2006.01) H01Q 21/24 (2006.01) H01Q 21/26 (2006.01)

Patent

CA 2425950

The dual polorization antenna includes a substrate having a ground plane and a dielectric layer adjacent thereto, and at least one antenna unit carried by the substrate. The antenna unit includes four adjacent antenna elements arranged in spaced apart relation from one another about a central feed position on the dielectric layer opposite the ground plane. Preferably, diagonal pairs of antenna elements define respective antenna dipoles thereby providing dual polorization. The antenna unit also includes an antenna feed structure having four coaxial feed lines, each coaxial feed line including an inner conductor and a tubular outer conductor in surrounding relation thereto. The outer conductors have parallel adjacent ends joined together about an axis and are connected to the ground plane. The ends of the outer conductors are tapered and arranged so that the portions thereof adjacent the axis extend further beyond the ground plane in the dielectric layer and toward the antenna elements.

L'invention traite d'une antenne à double polarisation munie d'un substrat comportant un plan de sol et une couche diélectrique adjacente audit plan de sol, et d'au moins une unité d'antenne portée par le substrat. L'unité d'antenne comporte quatre éléments d'antenne adjacents disposés de sorte qu'ils soient espacés les uns des autres autour d'un point d'alimentation central sur la couche diélectrique opposée au plan de sol. De préférence, les deux éléments d'antenne situés en diagonale constituent des doublets d'antennes correspondants, permettant ainsi une double polarisation. L'unité d'antenne comprend également une structure d'alimentation d'antenne dotée de quatre lignes d'alimentation coaxiales, chacune d'entre elles étant munies d'un conducteur intérieur et d'un conducteur extérieur tubulaire qui l'entoure. Les conducteurs extérieurs comportent des extrêmités adjacentes parallèles reliées autour d'un axe et raccordées au plan de sol. Les conducteurs extérieurs présentent des extrêmités coniques disposées de sorte que les parties d'extrêmités adjacentes à l'axe s'étendent au-delà du plan de sol dans la couche diélectrique et vers les éléments d'antenne.

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