Abstract: A UWB band pass filter that is formed by a circuit board. The circuit board includes a first dielectric layer made of a dielectric substrate, a filter structure made of electrically conductive material, on a first side of the first dielectric layer, a first ground layer made of electrically conductive material, on a second side of the first dielectric layer. The filter structure has an input terminal and an output terminal between which a line extends that includes multiple first line sections and second line sections, and wherein the filter structure has multiple stubs that are situated between the first line sections and that branch off from the second line sections. The first line sections and the stubs are situated in parallel. The longitudinal line of the middle first line sections is inserted, from which two open stubs that are rotationally symmetrical about the middle first line sections branch off.

Abstract: A communication device for determining a position of a communication partner, wherein the communication device has a first circular antenna, at least one further circular antenna, a circuit board, and a communication module situated at the circuit board. The circuit board includes at least one first copper layer and a second copper layer. The first antenna has a first recess that is formed in the first copper layer, a first ground plane, and a first excitation structure. The at least one further antenna has a further recess that is formed in the first copper layer, a further ground plane, and a further excitation structure. The first ground plane is spaced apart from the further ground plane to electromagnetically decouple the first antenna from the at least one further antenna.

Abstract: A device for recognizing living beings, in particular persons and/or children, in a vehicle interior of a vehicle, having: a first antenna for transmitting and/or receiving ultra-wideband waves; a second antenna for transmitting and/or receiving ultra-wideband waves; a lower conductor structure, wherein the first antenna and the second antenna are arranged at least partially in the lower conductor structure; and an upper conductor structure, wherein the first antenna and the second antenna are arranged at least partially in the upper conductor structure. Furthermore, the invention relates to a corresponding method, a computer program product, a computer-readable data carrier, a control unit, and a vehicle.

Abstract: A communication device for determining a position of a communication partner, wherein the communication device has a first circular antenna, at least one further circular antenna, a circuit board, and a communication module situated at the circuit board. The circuit board includes at least one first copper layer and a second copper layer. The first antenna has a first recess that is formed in the first copper layer, a first ground plane, and a first excitation structure. The at least one further antenna has a further recess that is formed in the first copper layer, a further ground plane, and a further excitation structure. The first ground plane is spaced apart from the further ground plane to electromagnetically decouple the first antenna from the at least one further antenna.

Abstract: A UWB band pass filter that is formed by a circuit board. The circuit board includes a first dielectric layer made of a dielectric substrate, a filter structure made of electrically conductive material, on a first side of the first dielectric layer, a first ground layer made of electrically conductive material, on a second side of the first dielectric layer. The filter structure has an input terminal and an output terminal between which a line extends that includes multiple first line sections and second line sections, and wherein the filter structure has multiple stubs that are situated between the first line sections and that branch off from the second line sections. The first line sections and the stubs are situated in parallel. The longitudinal line of the middle first line sections is inserted, from which two open stubs that are rotationally symmetrical about the middle first line sections branch off.