US 11,756,903 B2
Radar sensor, motor vehicle and method for producing a radar sensor
Niels Koch, Reichertshofen (DE)
Assigned to Audi AG, Ingolstadt (DE)
Filed by AUDI AG, Ingolstadt (DE)
Filed on Jan. 23, 2020, as Appl. No. 16/750,179.
Claims priority of application No. 102019200902.6 (DE), filed on Jan. 24, 2019.
Prior Publication US 2020/0243463 A1, Jul. 30, 2020
Int. Cl. H01L 23/66 (2006.01); H01L 23/498 (2006.01); G01S 13/931 (2020.01); H01Q 1/32 (2006.01); H01Q 1/22 (2006.01); H05K 1/18 (2006.01); H01Q 23/00 (2006.01)
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
OG exemplary drawing
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.