Process to manufacture microwave components using hard anodised aluminum
OwnerHans Magnussoninventor
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Abstract
The invention relates to a process for reducing the dimension and dramatically reducing the manufacturing cost, and of increasing the reliability of microwave components such as antennae (2), power dividers, filters, directional couplers and other types of integrated line networks, by producing a surface layer with a high dielectric constant on an aluminum substrate by hard anodization in combination with flat conductor technology.
Claims9
Process to reduce the dimensions of mechanical components intended for microwave applications, such as antennae (2), power dividers, filters, directional couplers and other integrated line networks, by the introduction of a dielectric with a given dielectric ratio at the actual wavelength characterized in that the mechanical component of the kind in question is made of aluminium, in that use is made of a dielectric consisting of aluminium oxide, which is produced by oxidation of the aluminium in said mentioned aluminium material and in that the electric function is achieved by the application of a metal coating to the formed oxide layer, for example with copper, and by the subsequent etching of the actual conductor pattern.
Process in accordance with one or other of the above Patent Claims, characterized in that a thickness of the oxide layer that is at least ca. 50 μm is utilized.
Dependencies are inferred from the claim text.