High-frequency-transparent component and method for producing the same
View Patent ↗The invention relates to a high-frequency-transparent component comprising: a main body ( 2 ) and a coating ( 3 ) consisting of metal-doped Al2O3 sputtered thereon, and to a method for producing said component.
1. A high-frequency-transparent component comprising:
a main element; and
a layer comprising Al 2 O 3 with metal doping, wherein the layer is sputtered on the main element,
wherein the layer is doped such that a transmission attenuation of the component in a frequency range from 60 GHz to 90 GHz is altered by less than 0.1 dB by the layer.
2. The component according to claim 1 , wherein:
doping is carried out with a concentration in a range from a lower doping concentration to an upper doping concentration, and
the upper doping concentration is selected such that a surface resistance of the layer is at least 10 MOhm.
3. The component according to claim 1 , wherein the metal doping is doping with at least one of Au, Ag, Cu, Ni, Pt or Ti.
4. The component according to claim 1 , wherein a thickness of the layer is in a range from 25 nm to 100 nm.
5. The component according to claim 1 , wherein the main element comprises a polymer.
6. The component according to claim 1 , wherein the component is a vehicle component.
7. The component according to claim 1 , wherein the component is a radar cover.
8. A process for producing a high-frequency-transparent component, the method comprising:
providing a main element; and
sputtering a metal-doped Al 2 O 3 layer onto the main element,
wherein the layer is doped such that a transmission attenuation of the component in a frequency range from 60 GHz to 90 GHz is altered by less than 0.1 dB by the layer.