Mounting bracket for a radar sensor

A method for manufacturing a mounting bracket for a radar sensor, the method comprising:

• providing a first layer of the mounting bracket,
• providing a second layer of the mounting bracket, the second layer being positioned adjacent to the first layer and having a higher absorption coefficient than the first layer for radar waves transmitted by the radar sensor within a predetermined range of wavelengths, the second layer further including a radar absorbing material including coatings or inhomogeneities which are designed for absorbing radar waves having a given wavelength, and
• defining a predefined orientation for the mounting bracket such that the first layer is first exposed to radar waves transmitted by the radar sensor and reflected by a further item before the second layer is exposed to the radar waves,
• wherein an expected incident angle at the first layer is provided for the radar waves transmitted by the radar sensor,
• wherein the expected incident angle is predefined in accordance with an alignment of the mounting bracket with respect to the radar sensor when the mounting bracket and the radar sensor are integrated in an intended environment, and
• a thickness of the first layer is set so as to reduce a radar reflectivity of the bracket for the expected incident angle.

A method for integrating a radar system in an interior of a vehicle, wherein the radar system includes a radar sensor and a bracket for mounting the radar sensor, the bracket having a first layer and a second layer configured to be adjacent to the first layer and having a higher absorption coefficient than the first layer for radar waves transmitted by the radar sensor within a predetermined range of wavelengths, the second layer further including a radar absorbing material including coatings or inhomogeneities which are designed for absorbing radar waves having a given wavelength, the method comprising:

• mounting the bracket at a component of the vehicle in accordance with a mounting orientation, wherein the mounting orientation is defined such that the first layer is first exposed to radar waves transmitted by the radar sensor before the second layer is exposed to the radar waves, and
• mounting the radar sensor at the bracket,
• wherein the radar sensor is mounted at the bracket in accordance with a predefined alignment with respect to the bracket,
• the predefined alignment depends at least partly on an expected incident direction at a surface of the bracket for the radar waves transmitted by the radar sensor and reflected by the component of the vehicle, and
• a thickness of the first layer of the bracket correlates with the expected incident direction so as to reduce a radar reflectivity of the bracket for the expected incident direction.