US 12,313,767 B2
Method for manufacturing a radar sensor
Christian Hollaender, Waldbronn (DE); Klaus Baur, Mietingen (DE); Armin Himmelstoss, Weissach Im Tal (DE); Gustav Klett, Moessingen (DE); Michael Schoor, Stuttgart (DE); and Minh Nhat Pham, Leinfelden-Echterdingen (DE)
Assigned to ROBERT BOSCH GMBH, Stuttgart (DE)
Filed by Robert Bosch GmbH, Stuttgart (DE)
Filed on Dec. 9, 2021, as Appl. No. 17/643,493.
Claims priority of application No. 10 2020 216 362.6 (DE), filed on Dec. 21, 2020.
Prior Publication US 2022/0196792 A1, Jun. 23, 2022
Int. Cl. G01S 7/03 (2006.01); G02B 6/122 (2006.01); H01L 23/66 (2006.01); H01Q 1/22 (2006.01); H01Q 23/00 (2006.01)
CPC G01S 7/032 (2013.01) [G02B 6/1228 (2013.01); H01L 23/66 (2013.01); H01Q 1/2283 (2013.01); H01L 2223/6677 (2013.01); H01Q 23/00 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A method for manufacturing a radar sensor, comprising the following steps:
providing a circuit board that has a copper layer;
equipping a surface of the circuit board with a radar transceiver;
applying a soldering paste so that the soldering paste is positioned at least at a plurality of attachment locations on the copper layer;
providing a waveguide structure made of plastic;
forming waveguide channels, each including at least one metallic conductively coated side wall in the waveguide structure and an open side, the waveguide channels each having a three-walled or U-shaped cross-section and having a length extending perpendicularly to the three-walled or U-shaped cross-section; and
soldering a solderable material of the waveguide structure to the circuit board via the soldering paste, the open side being oriented in a direction of the circuit board so that the circuit board forms a floor of the waveguide channels to which each of the at least one side wall of the waveguide channels are directly connected, transforming the three-walled or U-shaped structure into a four-walled or O-shaped cross-section.