Substantially flat, aperture coupled antenna element
An antenna unit and aperture coupling technology, which is applied to antennas, slot antennas, resonant antennas, etc., can solve the problems of design technology and manufacturing disorder, cost increase, etc.
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[0012] figure 1 The antenna element shown schematically in contains a multilayer structure. This structure includes a relatively thick upper dielectric layer 1, on which a rectangular plate 2 is provided, which constitutes the radiating part of the antenna unit; Conductive ground plane layer 3 of the aperture 4, and a thinner plate or substrate 5 of low dielectric, with a feed network 6 in a planar arrangement on the underside of the substrate 5, i.e. on the side away from the cross-shaped aperture 4, In order to ensure that there is a distance corresponding to the thickness of the plate 5 between the network and the cross-shaped apertures.
[0013] In the example shown, the upper layer 1 has a thickness of approximately 15 mm and is made of Rohacell foam. Plate 2 is made of aluminum foil with a thickness of 50 μm and a size of 54×50 mm.
[0014] Centrally under the plate 2 is a cross-shaped aperture 4 consisting of two mutually perpendicular slots 4a, 4b intersecting at a ...
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