Abstract: A radar sensor device. The radar device includes a radar sensor for detecting an object using radar waves, a transmission path which transmits a transmission signal in the direction of the object and includes a transmission antenna, at least one receiving path which transmits a transmission signal reflected by the object as a reception signal and includes a receiving antenna and a test signal path which transmits a test signal for self-testing the radar sensor and extends at least between a first coupling point of the transmission path and a second coupling point of the receiving path. The first coupling point is disposed in the direction toward the object downstream of the transmission antenna or immediately upstream of the transmission antenna and the second coupling point is disposed in the direction coming from the object upstream of the receiving antenna or immediately downstream of the receiving antenna.

Abstract: A circuit board for radar sensors including a substrate having a topside and a lower surface. The circuit board has at least one antenna device, which is situated on the topside of the substrate and is developed out of a metal layer. In addition, the circuit board has a fill structure situated on the topside of the substrate, which is developed out of the metal layer. The fill structure is situated at a distance from the antenna device in a surface region of the topside of the substrate, the surface region not being taken up by the antenna device. The fill structure has no electrical connection to the antenna device. The surface utilization of the fill structure amounts to between 50% and 300% of that of a surface utilization of the antenna device.

Abstract: A waveguide device. The waveguide device as a base element, having a first surface side and an oppositely situated second surface side, and a plurality of waveguide elements that conduct electromagnetic waves. The elements are arranged between the first and second surface sides and, on the first surface side, comprise a first waveguide opening arrangement and, on the second surface side, comprise a second waveguide opening arrangement different from the first waveguide opening arrangement. The base element comprises support elements for adapting a strain in a first plane comprising the first surface side to a strain in a second plane comprising the second surface side. The adaptation reduces a deformation of the waveguide device.

Abstract: A circuit board for radar sensors including a substrate having a topside and a lower surface. The circuit board has at least one antenna device, which is situated on the topside of the substrate and is developed out of a metal layer. In addition, the circuit board has a fill structure situated on the topside of the substrate, which is developed out of the metal layer. The fill structure is situated at a distance from the antenna device in a surface region of the topside of the substrate, the surface region not being taken up by the antenna device. The fill structure has no electrical connection to the antenna device. The surface utilization of the fill structure amounts to between 50% and 300% of that of a surface utilization of the antenna device.

Abstract: A radar sensor having at least one antenna structure and at least one coupling structure, which is designed to couple substrate waves out of an antenna substrate used as a carrier for the antenna structure and the coupling structure, and to emit them as coupled waves into an emission region. The radar sensor has an absorber which is situated in the emission region in order to absorb the coupled waves.

Abstract: A system for transmitting a piece of information to a subunit, including at least one connection position and at least one subunit, the at least one connection position being configured for accommodating a subunit, and the at least one connection position including at least one coding lug which is configured for engaging into a corresponding recess on a subunit, the arrangement of the at least one coding lug coding the piece of information to be transmitted, and the at least one subunit having at least one recess which is configured for contactlessly detecting the presence of a coding lug in a recess.

Abstract: A vehicle includes a body having a body outer element that has an external surface, and a radar module having a radar sensor, a housing that accommodates the radar sensor and that has a housing opening situated in the direction of detection of the radar sensor, and a radome fastened on the housing that closes the housing opening in the manner of a cover. The radome forms a part of the external surface of the body outer element.

Abstract: A sensor device for a motor vehicle, including a first transmitting antenna, which is situated on a surface of a substrate, has a narrow lobe-type directional characteristic and includes a defined number of planar antenna elements; a second transmitting antenna situated on the surface of the substrate has a wide lobe-type directional characteristic, including a defined number of planar antenna elements, the directional characteristics of the two transmitting antennas being oriented opposite one another by a defined angle, with respect to a boresight; and at least one receiving antenna situated on the surface of the substrate including a defined number of planar antenna elements.

Abstract: A system for transmitting a piece of information to a subunit, including at least one connection position and at least one subunit, the at least one connection position being configured for accommodating a subunit, and the at least one connection position including at least one coding lug which is configured for engaging into a corresponding recess on a subunit, the arrangement of the at least one coding lug coding the piece of information to be transmitted, and the at least one subunit having at least one recess which is configured for contactlessly detecting the presence of a coding lug in a recess.

Abstract: A sensor device for a motor vehicle, including a first transmitting antenna, which is situated on a surface of a substrate, has a narrow lobe-type directional characteristic and includes a defined number of planar antenna elements; a second transmitting antenna situated on the surface of the substrate has a wide lobe-type directional characteristic, including a defined number of planar antenna elements, the directional characteristics of the two transmitting antennas being oriented opposite one another by a defined angle, with respect to a boresight; and at least one receiving antenna situated on the surface of the substrate including a defined number of planar antenna elements.

Abstract: A radome-free microwave sensor includes: a microwave antenna, with the aid of which microwaves are emitted and received; and a sealing device, with the aid of which a cavity enclosing the microwave antenna is closed when the sealing device abuts against a component of the vehicle.