Double-delta log-periodic antenna

H - Electricity – 01 – Q

Patent

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Details

H01Q 21/22 (2006.01) H01Q 11/10 (2006.01)

Patent

CA 2172742

This high-gain, wide-bandwidth antenna has several pairs of coplanar triangles, with a corner from each triangle at the centre and the two triangle sides opposite those corners being parallel to each other. Those pairs are in parallel planes and are aligned so that the parallel sides in each pair are also parallel to the parallel sides in the other pairs. The triangle dimensions and the distances between those pairs are progressively and proportionally smaller from the rear to the front of the antenna. Two feeder conductors are attached to the central corners of those pairs so that one conductor connects to one side of both triangles and the other conductor connects to the other side of both triangles. In addition, those connections are reversed between the adjacent pairs. The connection to the associated electronic equipment is usually at the front end of those feeder conductors.

Antenne à gain élevé et à large bande passante, comprenant plusieurs paires de triangles coplanaires, un coin de chaque triangle étant au centre et les deux côtés du triangle opposés à ces coins étant parallèles entre eux. Ces paires sont situées dans des plans parallèles et sont alignées de manière que les côtés parallèles de chaque paire soient également parallèles aux côtés parallèles des autres paires. Les dimensions des triangles et les distances entre ces paires diminuent progressivement et proportionnellement de l'arrière à l'avant de l'antenne. Deux conducteurs d'alimentation sont attachés aux coins centraux de ces paires de sorte qu'un conducteur se rattache à un côté des deux triangles et l'autre conducteur se rattache à l'autre côté des deux triangles. En outre, deux connexions sont inversées entre les paires adjacentes. La connexion à l'équipement électronique associé est habituellement à l'avant de ces conducteurs d'alimentation.

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