CPC H01L 23/66 (2013.01) [G01S 13/931 (2013.01); H01L 23/49816 (2013.01); H01L 23/49827 (2013.01); H01Q 1/2283 (2013.01); H01Q 1/3233 (2013.01); H01Q 23/00 (2013.01); H05K 1/181 (2013.01); B60W 2420/52 (2013.01); B60Y 2400/3017 (2013.01); H01L 2223/6627 (2013.01); H01L 2223/6677 (2013.01); H01L 2223/6683 (2013.01); H05K 2201/10734 (2013.01)] | 9 Claims |
1. A radar sensor, comprising:
an antenna assembly;
a monolithic microwave integrated circuit (MIMIC) arranged on a circuit board, the MIMIC providing at least one antenna connection to the antenna assembly by a waveguide arranged on an opposite side of the circuit board, wherein the at least one antenna connection is implemented using a ball grid; and
the circuit board comprising a through-opening at a position of the at least one antenna connection, leading to a side of the circuit board opposite the MMIC, wherein:
the at least one antenna connection is connected, through the through-opening, to a radiation element projecting into the waveguide exceeding an inlet region of the waveguide;
the radiation element being surrounded by an annular insulation element at least in the inlet region into the waveguide; and
the through-opening comprises a through-plated hole connected to the radiation element.
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