SLOT/ELLIPSOID PAD COUPLING DEVICE FOR DIRECT SUPPLY BY THE WAVEGUIDE OF A PLANAR ANTENNA

摘要

According to a first aspect, the present invention relates to a planar antenna comprising: a substrate; at least one sub-network of radiating members provided on the substrate, said sub-network comprising a sub-network feed line (20) with a coupling pad (30) and a plurality of radiating members connected to the line; a ground plane (50) onto which the substrate is superimposed and having a slot (40) formed therein opposite the coupling pad (30) of the feed line (20) of each sub-network; a power transmission line (10) provided relative to the ground plane (50) so as to realise an electromagnetic coupling through the slot between said power transmission line and the coupling pad of each of the sub-network feed lines; said antenna being characterised in that the coupling pad (30) has an ellipsoid shape. According to another aspect, the present invention relates to a power supply line comprising an ellipsoid coupling pad.