Radar system for surroundings detection of a motor vehicle
A radar system for surroundings detection of a motor vehicle. The radar system includes an antenna for sending and/or receiving radar signals, a circuit board including at least one high-frequency component and an element for sending and/or receiving high-frequency signals. At least one fastening element is situated on/at the circuit board. The antenna includes at least one connecting element. The connecting element interacts with the fastening element in such a way that the antenna is fastenable and at the same time positionable on the circuit board by being pushed onto the at least one fastening element.
1 . A radar system for surroundings detection of a motor vehicle, comprising:
an antenna assembly that includes (I) an antenna configured at least one of as an emitter from which radar signals are emitted out of the radar system into a surrounding environment and as a receiver via which radar signals are captured into the radar system and (II) at least one pin that is integrally formed with or fixedly connected to the antenna;
a circuit board that has a surface that extends in a first direction and that faces a surface of the antenna in a second direction that is perpendicular to the first direction;
at least one high-frequency component arranged on the circuit board;
a high-frequency signal conveyor arranged at least one of on and in the circuit board; and
at least one fastener;
wherein:
each of the at least one fastener includes a base that is fixed to the circuit board and a respective plurality of prongs that extend in the second direction from first ends of the prongs that are connected to the base to second ends of the prongs which are free of the base so that they can be shifted radially inward and outward relative to the base;
each of the at least one pin extends in the second direction from the surface of the antenna towards the circuit board so that the respective pin is held by friction-fit within the respective plurality of prongs of a respective one of the at least one fastener, the friction-fit being by a spring-loading of the second ends of the respective plurality of prongs radially towards one another; and
the holding of the at least one pin by the friction-fit mechanically fastens the antenna to the circuit board and is caused by a sliding of the at least one pin into the prongs of the at least one fastener.
2 . The radar system as recited in claim 1 , wherein the at least one fastener extends through an opening in the circuit board.
3 . The radar system as recited in claim 1 , wherein the at least one fastener is attached to the circuit board on a side of the circuit board facing away from the antenna.
4 . The radar system as recited in claim 1 , wherein the fastener is attached to the circuit board on a side of the circuit board facing toward the antenna.
5 . The radar system as recited in claim 1 , wherein the fastener is soldered to the circuit board using an SMD soldering process.
6 . The radar system as recited in claim 1 , wherein the fastener is made of one of the following materials: metal, plastic.
7 . The radar system as recited in claim 1 , wherein the at least one fastener includes a plurality of fasteners and the at least one pin includes a plurality of pins.
8 . The radar system as recited in claim 1 , wherein the antenna is a waveguide antenna.
9 . The radar system as recited in claim 1 , wherein the at least one pin extends from a face of the antenna that faces towards the circuit board, and, in a direction towards the face of the antenna, tips of the prongs, which are at the second ends of the prongs, taper radially outward opposite to a direction of the spring-loading of the prongs.