US 12,216,225 B2
Facia supporting an ultra-wide radar field-of-view
Syed An Nazmus Saqueb, Kokomo, IN (US); Armin Talai, Nuremberg (DE); Kevin Paul McReynolds, Noblesville, IN (US); Ricardo Cavazos, Kokomo, IN (US); and Mark William Hudson, Russiaville, IN (US)
Assigned to Aptiv Technologies AG, Schaffhausen (CH)
Filed by Aptiv Technologies AG, Schaffhausen (CH)
Filed on Nov. 19, 2021, as Appl. No. 17/455,890.
Claims priority of provisional application 63/162,389, filed on Mar. 17, 2021.
Claims priority of provisional application 63/122,891, filed on Dec. 8, 2020.
Prior Publication US 2022/0179039 A1, Jun. 9, 2022
Int. Cl. G01S 7/02 (2006.01); G01S 13/931 (2020.01)
CPC G01S 7/027 (2021.05) [G01S 13/931 (2013.01); G01S 2013/93271 (2020.01)] 18 Claims
OG exemplary drawing
 
1. A system comprising:
an antenna including an array of elements directed towards a field-of-view; and
a facia for a vehicle and configured to be arranged between the antenna and the field-of-view, the facia having an exterior surface exposed to the field-of-view and an interior surface that is opposite the exterior surface and exposed to the array of elements,
the facia is configured as a radome having on the interior surface and the exterior surface a respective pattern of unit cells each with hemispherical indentations that are configured to trap light, the trapping of the light being effective to reduce reflections off that surface and increase light transmission through the facia to support an ultra-wide field-of-view using the antenna despite the facia obstructing the field of view,
wherein:
each one of the unit cells with the hemispherical indentations on the interior surface and the exterior surface includes a radius, a length, a width, and a total thickness of the radome,
the radius is greater than one-half the length,
the total thickness is greater than the length, and
the total thickness is greater than the width.