Radar sensor

Abstract

A radar sensor. The radar sensor includes a high-frequency component and an antenna arrangement, which are arranged on opposite sides of a circuit board. The radar sensor includes a coupling structure for coupling the antenna arrangement to the high-frequency component by signals. The circuit board has an aperture which is sized such that it is permeable to microwave radiation, in that the high-frequency component is connected to the circuit board by a multilayer connection structure which covers the aperture. The coupling structure includes a resonator element that is embedded in the connection structure and configured to radiate microwave radiation through the aperture into the antenna arrangement.

Dependencies are inferred from the claim text.