Control unit for receiving and processing radio signals in a vehicle

Abstract

The invention relates to a control unit (1) for receiving and processing radio signals in a vehicle (800). The control unit (1) comprises an electronic circuit board (5) with signal processing elements and a housing (3) with a top (8), a bottom (11), and side surfaces (13), which encloses the electronic circuit board (5). The top (8) of the housing (3) has a first antenna circuit board (7) in which at least one antenna surface (19) of an antenna is structured.

Description

[0001] The invention relates to a control unit for receiving and processing radio signals in a vehicle.

[0002] Today, many vehicles are equipped to communicate with satellites, communication networks, traffic infrastructure, and / or other vehicles using radio waves, for example, via mobile communications, satellite communication, or WLAN (Wireless Local Area Network). V2X communication is gaining increasing importance. Also known as Vehicle-to-Everything Communication, Car2X Communication, or Car-to-X Communication, V2X communication enables the exchange of information and data between participants in the V2X communication network. Participants in V2X communication are primarily road users and traffic infrastructure.Communication between participants in V2X communication takes place via radio signals, which are exchanged between participants, for example, using ITS-G5 / DSRC (abbreviation for Dedicated Short Range Communication) or in a mobile network, for example via PC5 or Uu interfaces.

[0003] To communicate using radio waves, a vehicle requires a suitable transmitter, receiver, and / or combined transmitter / receiver unit, which includes an antenna for sending and / or receiving radio signals. Services such as mobile communications, satellite broadcasting, and Wi-Fi differ primarily in the radio frequencies they use and therefore require different antennas. To utilize several of these services, a vehicle also needs multiple antennas and sufficient space for the antennas and components for processing the radio signals received by the antennas.

[0004] The invention is based on the objective of providing a device for sending and / or receiving radio signals in a vehicle, which is improved in particular with regard to installation space.

[0005] The problem is solved according to the invention by a control unit with the features of claim 1 and a vehicle with the features of claim 15.

[0006] Advantageous embodiments of the invention are the subject of the dependent claims.

[0007] The problem is solved according to the invention by a control unit for receiving and processing radio signals in a vehicle, the control unit comprising: - an electronic circuit board with elements for signal processing and - a housing with a top, a bottom and side surfaces, which encloses the electronic circuit board, wherein - the top of the housing has a first antenna circuit board in which at least one antenna surface of an antenna is structured.

[0008] According to the invention, at least one antenna is integrated into a vehicle control unit designed for processing radio signals. Integrating the antenna into the control unit allows for a space-saving and cost-effective design of both the control unit and the antenna, since the control unit and the antenna are not designed as separate assemblies. Furthermore, this antenna is integrated into a printed circuit board (first antenna circuit board) that is incorporated into the top surface of the control unit housing. Positioning the antenna on the top surface of the housing improves the reception of radio waves compared to positioning the antenna inside the housing or on the underside or side surface of the housing, particularly when the top surface of the housing is located, for example, beneath the roof of the vehicle, because the radio waves received by the antenna are then less attenuated or disrupted by the housing.

[0009] In one embodiment of the control unit according to the invention, the top of the housing is formed completely or partially by the first antenna circuit board. Partially means that a portion of the top of the housing is formed by the first antenna circuit board and the remaining portion of the top is formed by the housing material.

[0010] The circuit board not only supports the metallic antenna surface but also forms part of the upper section of the control unit's housing. Furthermore, structuring the antenna on a circuit board allows for easy contacting of the antenna via the board.

[0011] In a further embodiment of the control unit according to the invention, the first antenna circuit board is formed into a recess or indentation on the top of the housing. By forming the first antenna circuit board into a recess or indentation on the top of the housing, the first antenna circuit board can be connected to the housing during its manufacture, thus eliminating the need for separate assembly of the first antenna circuit board during the production of the control unit.

[0012] In a further embodiment of the control unit according to the invention, the first antenna circuit board has contact surfaces arranged on its inner surface. The inner surface of the first antenna circuit board is defined as the side of the antenna circuit board facing the interior of the housing, i.e., the space enclosed by the housing. The arrangement of the contact surfaces on the inner surface of the first antenna circuit board facilitates easy connection of the contact surfaces to the electronic circuit board, since the latter is located inside the housing.

[0013] In a further embodiment of the control unit according to the invention, each contact surface arranged on the inside of the first antenna circuit board is connected to the electronic circuit board via a flexible electrical connection. For example, at least one of the flexible electrical connections has a spring contact or an elastic contact element. Connecting a contact surface and the electronic circuit board via a flexible electrical connection advantageously allows for the compensation of slight displacements of the contact surface and the electronic circuit board relative to each other, for example, due to thermal expansion and contraction. Moreover, the flexibility of the connection facilitates the joining of the contact surface and the electronic circuit board, since precise positioning of the contact surface and the electronic circuit board relative to each other is not required for joining.

[0014] In a further embodiment of the control device according to the invention, the first antenna circuit board has a rigid area on the top side of the housing with at least one antenna and a flexible area with conductor tracks for connecting the antenna to the electronic circuit board. This embodiment of the control device according to the invention is particularly advantageous if the first antenna circuit board has several antenna areas, because then all antenna areas can be connected to the electronic circuit board via the flexible area of ​​the first antenna circuit board, so that no separate electrical connections are required for the individual antenna areas. The use of a flexible area of ​​the first antenna circuit board for this purpose also has the advantages of flexible electrical connections already mentioned above.

[0015] In a further embodiment of the control unit according to the invention, a side surface of the housing has a second antenna circuit board in which at least one antenna surface of an antenna is integrated. In this embodiment of the control unit according to the invention, a side surface of the control unit is used to integrate a further antenna into the housing. The antenna surface of the second antenna circuit board on a side surface of the control unit is vertically oriented and is particularly suitable for radio connections into the vehicle interior, such as WiFi, Bluetooth or Ultra Wideband.

[0016] In a further embodiment of the control unit according to the invention, the second antenna circuit board has a rigid area on a side surface of the housing with at least one antenna and a flexible area with conductor tracks for connecting the antenna to the electronic circuit board. This embodiment of the control unit according to the invention is analogous to the embodiment above, in which the first antenna circuit board has a rigid and a flexible area. Therefore, the advantages of this embodiment are also analogous to those mentioned above.

[0017] In a further embodiment of the control unit according to the invention, the first antenna circuit board has: - a first rigid area on the top of the housing with at least one antenna, - a second rigid area on a side surface of the housing with at least one antenna, - a first flexible area with conductor tracks between the first and second rigid area and - a second flexible area with conductor tracks for connecting the antennas to the electronic circuit board.

[0018] This embodiment of the control unit according to the invention combines the aforementioned embodiments with a first antenna circuit board and a second antenna circuit board, each with a rigid and a flexible area. The functions of the rigid areas of these circuit boards are performed by the first and second rigid areas of the first antenna circuit board. In contrast to an embodiment with a first and a second antenna circuit board, each having a flexible area connected to the electronic circuit board, the rigid areas of the first antenna circuit board are connected by a first flexible area of ​​the first antenna circuit board. This allows the overall length of the flexible areas to be reduced, and only one flexible area needs to be connected to the electronic circuit board.

[0019] In a further embodiment of the control unit according to the invention, the outer surface of the first or second antenna circuit board has an electrically insulating coating. For example, the coating of the outer surface of the first or second antenna circuit board is a layer of paint, an adhesive film, or an adhesive label. The coating protects the outer surface of the first or second antenna circuit board, for example, from oxidation or damage.

[0020] Another embodiment of the control unit according to the invention has a third antenna circuit board, which has at least one antenna surface and is arranged on the underside of the housing. In this embodiment of the control unit according to the invention, the underside of the housing is used to arrange at least one further antenna on the housing of the control unit. The antenna surface of the third antenna circuit board on a side surface of the control unit is vertically oriented and is particularly suitable for radio connections into the vehicle interior, such as WiFi, Bluetooth or Ultra Wideband.

[0021] The invention is further solved by a vehicle with a control unit according to the invention, which is arranged close to a roof surface of the vehicle, such that the upper side of the control unit housing faces the roof surface. The advantages of a vehicle according to the invention result from the advantages of a control unit according to the invention mentioned above.

[0022] Embodiments of the invention are explained in more detail below with reference to the drawings. These show: Fig. 1 a sectional view of a first embodiment of a control unit according to the invention, Fig. 2 a sectional view of a second embodiment of a control unit according to the invention, Fig. 3 a sectional view of a third embodiment of a control unit according to the invention, Fig. 4 a sectional view of a fourth embodiment of a control unit according to the invention, Fig. 5 a sectional view of a fifth embodiment of a control unit according to the invention, Fig. 6 a sectional view of a sixth embodiment of a control unit according to the invention, Fig. 7 a sectional view of a seventh embodiment of a control unit according to the invention, Fig. Figure 8 schematically shows an embodiment of a vehicle according to the invention.

[0023] Corresponding parts are marked with the same reference symbols in the figures.

[0024] Fig. 1 ( Fig. Figure 1 shows a sectional view of a first embodiment of a control unit 1 according to the invention for receiving and processing radio signals in a vehicle. The control unit 1 comprises a housing 3, an electronic circuit board 5, and an antenna circuit board 7.

[0025] In this embodiment of a control unit 1 according to the invention, the antenna circuit board 7 forms the top surface 8 of the housing 3. The housing 3 also has a lower housing part 9, which forms a bottom surface 11 of the housing 3 and side surfaces 13 of the housing 3 projecting from the bottom surface 11.

[0026] The lower housing part 9 is open at the top and closed by the antenna circuit board 7. A circumferential collar 15 projects inwards from the side surfaces 13 of the housing 3, on which an edge area of ​​the antenna circuit board 7 rests.

[0027] The electronic circuit board 5 is arranged in the housing 3. The electronic circuit board 5 is connected to the underside 11 of the housing 3 by supports 17. The supports 17 can be parts of the lower housing section 9. Among other things, elements for processing the radio signals are arranged on the electronic circuit board 5.

[0028] The antenna circuit board 7 is designed in two layers. On an outer surface (top side), several antenna surfaces 19 are structured into the antenna circuit board 7. On an inner surface (bottom side) of the antenna circuit board 7, electrically conductive contact surfaces 21 are arranged. Each contact surface 21 is electrically connected to an antenna surface 19 on the outer surface of the antenna circuit board 7 by means of a via 25 in the antenna circuit board 7.

[0029] Furthermore, each contact surface 21 is connected to the electronic circuit board 5 via a flexible electrical connection 27. The electrical connection 27 is a spring contact 28 that is electrically fixed to the electronic circuit board 5.

[0030] An outer surface of the antenna circuit board 7 has an electrically insulating coating 29. The coating 29 is, for example, a layer of paint, an adhesive film, or an adhesive label.

[0031] Fig. 2 ( Fig. Figure 2) shows a sectional view of a second embodiment of a control unit 1 according to the invention for receiving and processing radio signals in a vehicle. The control unit 1 again comprises a housing 3, an electronic circuit board 5 and an antenna circuit board 7.

[0032] The housing 3 comprises a lower housing part 9 and an upper housing part 10. The lower housing part 9 forms a bottom surface 11 of the housing 3 and lower sections of the side surfaces 13 of the housing 3 projecting from the bottom surface 11. The upper housing part 10 forms upper sections of the side surfaces 13 of the housing 3 and an edge region 31 of a top surface 8 of the housing 3. The antenna circuit board 7 closes the upper surface of the housing part 10. An edge region of the antenna circuit board 7 rests against the underside of the edge region 31. The edge region 31 and a central region of the antenna circuit board 7 form the top surface 8 of the housing 3.

[0033] The electronic circuit board 5 is arranged in the housing 3. The electronic circuit board 5 is connected to the underside 11 of the housing 3 by supports 17. The supports 17 can be parts of the lower housing section 9. Among other things, elements for processing the radio signals are arranged on the electronic circuit board 5.

[0034] The antenna circuit board 7 is single-layer. Several antenna surfaces 19 are structured into the inner (underside) surface of the antenna circuit board 7. Furthermore, contact surfaces 21 for connecting the antenna surfaces 19 are arranged on the inner surface of the antenna circuit board 7. At least one contact surface 21 can be integrated into each antenna surface 19.

[0035] Each contact surface 21 is connected to the electronic circuit board 5 via an electrical connection 27. Each electrical connection 27 has an elastic contact element 33 and a contact pin 35 connected to the elastic contact element 33. The elastic contact element 33 is soldered into the antenna circuit board 7. The contact pin 35 is electrically connected to the electronic circuit board 5.

[0036] Fig. 3 ( Fig. Figure 3 shows a sectional view of a third embodiment of a control unit 1 according to the invention for receiving and processing radio signals in a vehicle. The control unit 1 again comprises a housing 3, an electronic circuit board 5, and an antenna circuit board 7.

[0037] The antenna circuit board 7 of this embodiment of a control device 1 according to the invention has a rigid area 7.1 and a flexible area 7.2. The rigid area 7.1 of the antenna circuit board 7 forms the top surface 8 of the housing 3. The housing 3 also has a lower housing part 9, which forms a bottom surface 11 of the housing 3 and side surfaces 13 of the housing 3 projecting from the bottom surface 11.

[0038] The lower housing part 9 is open at the top and closed by the rigid section 7.1 of the antenna circuit board 7. A circumferential collar 15 projects inwards from the side surfaces 13 of the housing 3, on which an edge region of the rigid section 7.1 of the antenna circuit board 7 rests.

[0039] The electronic circuit board 5 is arranged in the housing 3. The electronic circuit board 5 is connected to the underside 11 of the housing 3 by supports 17. The supports 17 can be parts of the lower housing section 9. Among other things, elements for processing the radio signals are arranged on the electronic circuit board 5.

[0040] The rigid area 7.1 of the antenna circuit board 7 is double-sided (two-layered). On one outer side (top side), antenna surfaces 19 of several antennas are structured within the rigid area 7.1. On an inner side (bottom side) of the rigid area 7.1, electrically conductive contact surfaces 21 are arranged for contacting the antenna surfaces 19. Each contact surface 21 is electrically connected to an antenna surface 19 on the outer side of the rigid area 7.1 via a via 25 in the rigid area 7.1.

[0041] The flexible area 7.2 of the antenna circuit board 7 connects the rigid area 7.1 to the electronic circuit board 5 and is soldered into the electronic circuit board 5. The flexible area 7.2 has conductive traces that are each electrically connected to a contact surface 21, for example directly or via a conductive trace on the inside of the rigid area 7.1, and to the electronic circuit board 5.

[0042] An outer surface of the rigid area 7.1 of the antenna circuit board 7 has an electrically insulating coating 29. The coating 29 is, for example, a lacquer layer, an adhesive film, or an adhesive label.

[0043] Fig. 4 ( Fig. Figure 4) shows a sectional view of a fourth embodiment of a control unit 1 according to the invention for receiving and processing radio signals in a vehicle. This embodiment differs from the one shown based on Fig. 3 described embodiment only in that the flexible area 7.2 of the antenna circuit board 7 is not soldered into the electronic circuit board 5, but is connected to the electronic circuit board 5 via a connector 37 which is soldered into the electronic circuit board 5.

[0044] Fig. 5 ( Fig. Figure 5 shows a sectional view of a fifth embodiment of a control unit 1 according to the invention for receiving and processing radio signals in a vehicle. The control unit 1 again comprises a housing 3, an electronic circuit board 5, and an antenna circuit board 7.

[0045] The antenna circuit board 7 of this embodiment of a control unit 1 according to the invention has a first rigid area 7.3, a second rigid area 7.4, a first flexible area 7.5 and a second flexible area 7.6.

[0046] The housing 3 comprises a lower housing part 9 and an upper housing part 10. The lower housing part 9 forms a bottom surface 11 of the housing 3 and lower sections of the side surfaces 13 of the housing 3 projecting from the bottom surface 11. The upper housing part 10 forms upper sections of the side surfaces 13 of the housing 3 and an edge region 31 of a top surface 8 of the housing 3. The first rigid section 7.3 of the antenna circuit board 7 closes the upper surface of the housing part 10. An edge region of the first rigid section 7.3 of the antenna circuit board 7 rests against the underside of the edge region 31. The edge region 31 and a central region of the first rigid section 7.3 of the antenna circuit board 7 form the top surface 8 of the housing 3.

[0047] The electronic circuit board 5 is arranged in the housing 3. The electronic circuit board 5 is connected to the underside 11 of the housing 3 by supports 17. The supports 17 can be parts of the lower housing section 9. Among other things, elements for processing the radio signals are arranged on the electronic circuit board 5.

[0048] The first rigid area 7.3 of the antenna circuit board 7 is single-sided (single-layer). On one inner side (underside) of the first rigid area 7.3, antenna surfaces 19 of several antennas are structured within it. Furthermore, contact surfaces 21 for connecting the antenna surfaces 19 are arranged on the inner side of the first rigid area 7.3. At least one contact surface 21 can be integrated into an antenna surface 19 of the first rigid area 7.3.

[0049] The second rigid area 7.4 of the antenna circuit board 7 forms part of a side surface 13 of the housing 3. The second rigid area 7.4 is single-sided (single-layer). On an inner side of the second rigid area 7.4, an antenna surface 19 of at least one further antenna is structured within the second rigid area 7.4. Furthermore, contact surfaces 21 for contacting the at least one antenna surface 19 are arranged on the inner side of the second rigid area 7.4. At least one contact surface 21 can be integrated into an antenna surface 19.

[0050] The first flexible area 7.5 of the antenna circuit board 7 connects the first rigid area 7.3 and the second rigid area 7.4 of the antenna circuit board 7. The second flexible area 7.6 of the antenna circuit board 7 connects the second rigid area 7.4 of the antenna circuit board 7 and the electronic circuit board 5 and is connected to the electronic circuit board 5 via a connector 37, which is soldered into the electronic circuit board 5.

[0051] The first flexible area 7.5 has conductive traces, each of which is connected to a contact pad 21 of the first rigid area 7.3, for example, directly or via a conductive trace on the inside of the first rigid area 7.3. The second flexible area 7.6 has conductive traces, each of which is connected to a conductive trace of the first flexible area 7.5 via a conductive trace on the inside of the second rigid area 7.4, or directly or via a conductive trace on the inside of the second rigid area 7.4 to a contact pad 21 of the second rigid area 7. Furthermore, each conductive trace of the second flexible area 7.6 is electrically connected to the electronic circuit board 5.

[0052] Fig. 6 ( Fig. Figure 6 shows a sectional view of a sixth embodiment of a control unit 1 according to the invention for receiving and processing radio signals in a vehicle. The control unit 1 comprises a housing 3, an electronic circuit board 5, a first antenna circuit board 7, and a second antenna circuit board 39.

[0053] The housing 3 comprises a lower housing part 9 and an upper housing part 10. The lower housing part 9 forms a bottom surface 11 of the housing 3 and lower sections of the side surfaces 13 of the housing 3 projecting from the bottom surface 11. The upper housing part 10 forms upper sections of the side surfaces 13 of the housing 3 and an edge region 31 of a top surface 8 of the housing 3. The first antenna circuit board 7 closes the upper surface of the lower housing part 9. An edge region of the first antenna circuit board 7 rests against the underside of the edge region 31. The edge region 31 and a central region of the first antenna circuit board 7 form the top surface 8 of the housing 3.

[0054] The electronic circuit board 5 is arranged in the housing 3. The electronic circuit board 5 is connected to the underside 11 of the housing 3 by supports 17. The supports 17 can be parts of the lower housing section 9. Among other things, elements for processing the radio signals are arranged on the electronic circuit board 5.

[0055] The first antenna circuit board 7 is single-sided (single-layer). Antenna surfaces 19 of several antennas are structured into the inner side (underside) of the first antenna circuit board 7. Furthermore, contact surfaces 21 for connecting the antenna surfaces 19 are arranged on the inner side of the first antenna circuit board 7. At least one contact surface 21 can be integrated into each antenna surface 19.

[0056] Each contact surface 21 of the first antenna circuit board 7 is connected to the electronic circuit board 5 via an electrical connection 27. Each electrical connection 27 has an elastic contact element 33 and a contact pin 35 connected to the elastic contact element 33. The elastic contact element 33 is soldered into the first antenna circuit board 7. The contact pin 35 is soldered into the electronic circuit board 5 and is electrically connected.

[0057] The second antenna circuit board 39 has a rigid area 39.1 and a flexible area 39.2. The rigid area 39.1 forms part of a side surface 13 of the housing 3 and is single-sided (single-layer). On an inner surface of the rigid area 39.1, an antenna surface 19 of at least one further antenna is structured within the rigid area 39.1. Furthermore, contact surfaces 21 for contacting the at least one antenna surface 19 are arranged on the inner surface of the rigid area 39.1. At least one contact surface 21 can be integrated into an antenna surface 19.

[0058] The flexible area 39.2 of the second antenna circuit board 39 connects the rigid area 39.1 of the second antenna circuit board 39 and the electronic circuit board 5 and is connected to the electronic circuit board 5 via a connector 37, which is soldered into the electronic circuit board 5. The flexible area 39.2 has conductive traces, each of which is electrically connected directly or via a conductive trace on the inside of the rigid area 39.1 to a contact surface 21 of the rigid area 39.1 and the electronic circuit board 5.

[0059] Fig. 7 ( Fig. Figure 7) shows a sectional view of a seventh embodiment of a control unit 1 according to the invention for receiving and processing radio signals in a vehicle. This embodiment differs from the one shown based on Fig. The embodiment described in Figure 1 is modified by the addition of a further antenna circuit board 41, which forms part of the underside 11 of the housing 3 and is single-sided (single-layer). An antenna surface 19 for at least one further antenna is structured into the circuit board 41 on its inner side. Furthermore, contact surfaces 21 for contacting the at least one antenna surface 19 are arranged on the inner side of the circuit board 41. At least one contact surface 21 can be integrated into an antenna surface 19.

[0060] Each contact surface 21 of the antenna circuit board 41 is connected to the electronic circuit board 5 via an electrical connection 27. Each of these electrical connections 27 has an elastic contact element 33 and a contact pin 35 connected to the elastic contact element 33. The elastic contact element 33 is soldered into the antenna circuit board 41. The contact pin 35 is electrically connected to the electronic circuit board 5.

[0061] Fig. 8 ( Fig. Figure 8) schematically shows an embodiment of a vehicle 800 according to the invention. The vehicle 800 has a control unit 1 which, according to one of the provisions based on the Fig. The embodiment described in 1 to 7 is designed and is arranged close to a roof surface 801 of the vehicle 800, so that the upper side 8 of the housing 3 of the control unit 1 faces the roof surface 801. Reference symbol list 1 control unit 3 cases 5 Electronic circuit board 7 first antenna circuit board 7.1, 7.3, 7.4 rigid area 7.2, 7.5, 7.6 flexible area 8 Top 9 Lower housing part 10 Housing top 11. Bottom 13 side surface 15 collars 17 support 19 antenna area 21 Contact area 27 electrical connection 28 spring contact 29 Coating 31 Edge area 33 elastic contact element 35 contact pins 37 connectors 39 second antenna circuit board 41 third antenna circuit board 800 vehicles 801 Roof area

Claims

[1] Control unit (1) for receiving and processing radio signals in a vehicle (800), the control unit (1) comprising: - an electronic circuit board (5) with elements for signal processing and - a housing (3) with a top (8), a bottom (11) and side surfaces (13) which encloses the electronic circuit board (5), wherein - the top surface (8) of the housing (3) has a first antenna circuit board (7) in which at least one antenna surface (19) of an antenna is structured. [2] Control unit (1) according to claim 1, wherein the top (8) of the housing (3) is formed at least partially by the first antenna circuit board (7). [3] Control unit (1) according to claim 2, wherein the first antenna circuit board (7) is formed into a recess or cavity on the top side (8) of the housing (3). [4] Control unit (1) according to one of the preceding claims, wherein the first antenna circuit board (7) has contact surfaces (21) arranged on the inside of the first antenna circuit board (7). [5] Control unit (1) according to claim 4, wherein a contact surface (21) arranged on the inside of the first antenna circuit board (7) is connected to the electronic circuit board (5) via a flexible electrical connection (27). [6] Control unit (1) according to claim 5, wherein at least one of the flexible electrical connections (27) has a spring contact (28) or an elastic contact element (33). [7] Control unit (1) according to one of the preceding claims, wherein the first antenna circuit board (7) comprises: - a rigid area (7.1) on the top (8) of the housing (3) with at least one antenna and - a flexible area (7.2) with conductor tracks for connecting the antenna to the electronic circuit board (5). [8] Control unit (1) according to one of the preceding claims, wherein a side surface (13) of the housing (3) has a second antenna circuit board (39) in which at least one antenna surface (19) of an antenna is structured. [9] Control unit (1) according to claim 8, wherein the second antenna circuit board (39) comprises: - a rigid area (39.1) on a side surface (13) of the housing (3) with at least one antenna and - a flexible area (39.2) with conductor tracks for connecting the antenna to the electronic circuit board (5). [10] Control unit (1) according to one of the preceding claims, wherein the first antenna circuit board (7) comprises: - a first rigid area (7.3) on the top (8) of the housing (3) with at least one antenna, - a second rigid area (7.4) on a side surface (13) of the housing (3) with at least one antenna, - a first flexible area (7.5) with conductor tracks between the first rigid area (7.3) and the second rigid area (7.4) and - a second flexible area (7.6) with conductor tracks for connecting the antennas to the electronic circuit board (5). [11] Control unit (1) according to one of the preceding claims, wherein the outer surface of the first antenna circuit board (7) has an electrically insulating coating (29). [12] Control unit (1) according to claim 11, wherein the coating (29) is a paint layer, an adhesive film or an adhesive label. [13] Control unit (1) according to one of the preceding claims with a third antenna circuit board (41) having at least one antenna surface (19) of an antenna and arranged on the underside (11) of the housing (3). [14] Vehicle (800) with a control unit (1) designed according to one of the preceding claims, which is arranged close to a roof surface (801) of the vehicle (800), so that the top (8) of the housing (3) of the control unit (1) faces the roof surface (801).

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