Antenna system, vehicle-mounted communication system and vehicle

Abstract

The utility model provides an antenna system, a vehicle-mounted communication system and a vehicle. The antenna system is applied to the field of vehicle-mounted communication. The positioning and satellite communication integrated antenna is arranged in the middle of the circuit board; the 5G main antenna, the first 5G MIMO antenna, the first V2X antenna, the WIFI and Bluetooth integrated antenna, the 5G diversity antenna, the second 5G MIMO antenna, the WIFI antenna and the second V2X antenna are sequentially arranged at intervals along the edge of the circuit board; for the antennas arranged along the edge of the circuit board, the distance between the adjacent antennas is larger than or equal to the minimum distance between the adjacent antennas which do not interfere with each other. According to the utility model, a plurality of antennas can be combined in a limited space, and the antennas do not interfere with each other or are less interfered with each other, and the isolation is high, so that the antenna system has good transmit-receive performance.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle-mounted communication, and in particular to an antenna system, a vehicle-mounted communication system and a vehicle. Background Art

[0002] With the development of intelligent automobiles, automobiles need to receive more and more signals, the types of antennas increase accordingly, and the number of vehicle-mounted antennas also increases accordingly, but at the same time, vehicle-mounted antennas must develop in the direction of low cost and miniaturization.

[0003] If the design is performed according to the traditional shark fin antenna, due to the limited size of the PCB (Printed Circuit Board) base plate, if a large number of antennas are assembled on the PCB base plate, the distance between the antennas will be too close, which will lead to poor antenna isolation and affect the antenna performance. Utility Model Content

[0004] The embodiments of the utility model provide an antenna system, a vehicle-mounted communication system and a vehicle, so as to solve the problem that the prior art cannot realize combining a large number of antennas in a limited space and ensure that the antennas have good performance.

[0005] In a first aspect, an embodiment of the utility model provides an antenna system, comprising:

[0006] Circuit boards;

[0007] a positioning and satellite communication integrated antenna disposed in the middle of the circuit board; and,

[0008] A 5G main antenna, a first 5G MIMO antenna, a first V2X antenna, a WIFI and Bluetooth integrated antenna, a 5G diversity antenna, a second 5G MIMO antenna, a WIFI antenna, and a second V2X antenna are sequentially arranged along the edge of the circuit board;

[0009] For each antenna disposed along the edge of the circuit board, the distance between adjacent antennas is greater than or equal to a minimum distance between the adjacent antennas that does not interfere with each other.

[0010] In a possible implementation, the integrated positioning and satellite communication antenna includes:

[0011] Positioning antennas;

[0012] a satellite receiving antenna located on the positioning antenna; and,

[0013] A satellite transmitting antenna located on a satellite receiving antenna.

[0014] In one possible implementation, the 5G main antenna and the 5G diversity antenna are arranged diagonally, and the first 5G MIMO antenna and the second 5G MIMO antenna are arranged diagonally;

[0015] The 5G main antenna and the first 5G MIMO antenna are located on a first side of the circuit board, and the 5G diversity antenna and the second 5G MIMO antenna are located on a second side of the circuit board, and the first side and the second side are opposite sides.

[0016] In a possible implementation, the first V2X antenna and the second V2X antenna are arranged opposite to each other, and the WIFI and Bluetooth integrated antenna is arranged opposite to the WIFI antenna;

[0017] The first V2X antenna and the WIFI and Bluetooth integrated antenna are located on the third side of the circuit board, and the second V2X antenna and the WIFI antenna are located on the fourth side of the circuit board. The third side and the fourth side are opposite sides.

[0018] In a possible implementation, the antenna system further includes a radio frequency connector;

[0019] RF connectors are used to connect circuit boards and vehicle-mounted wireless terminals.

[0020] In a possible implementation, the RF connector includes a first RF board and a second RF board; the first RF board is connected to the circuit board, and the second RF board is connected to the vehicle-mounted wireless terminal;

[0021] The first radio frequency board is provided with a first connection terminal, and the second radio frequency board is provided with a second connection terminal; the first connection terminal is connected to the second connection terminal in a one-to-one correspondence.

[0022] In a possible implementation manner, the number of first connection terminals is greater than or equal to the number of antennas in the antenna system.

[0023] In a possible implementation, the antenna system is disposed on the roof of the vehicle;

[0024] The first radio frequency board, the circuit board and the antenna arranged on the circuit board are located outside the roof; the second radio frequency board and the vehicle-mounted wireless terminal are located inside the roof.

[0025] In a second aspect, an embodiment of the utility model provides a vehicle-mounted communication system, including the antenna system and the vehicle-mounted wireless terminal as described in the first aspect or any possible implementation of the first aspect;

[0026] The antenna system is connected to the vehicle-mounted wireless terminal.

[0027] In a third aspect, an embodiment of the utility model provides a vehicle, comprising the vehicle-mounted communication system as described in the second aspect.

[0028] The embodiments of the utility model provide an antenna system, an on-board communication system and a vehicle, wherein an integrated positioning and satellite communication antenna is arranged in the middle of a circuit board, and a 5G main antenna, a first 5G MIMO antenna, a first V2X antenna, a WIFI and Bluetooth integrated antenna, a 5G diversity antenna, a second 5G MIMO antenna, a WIFI antenna and a second V2X antenna are sequentially arranged along the edge of the circuit board. Moreover, the distance between adjacent antennas arranged along the edge of the circuit board is greater than or equal to the minimum distance between the adjacent antennas without mutual interference. Through the layout positions of the antennas, the distance restrictions between adjacent antennas and the integrated arrangement of the positioning antenna and the satellite antenna, a large number of antennas can be combined in a limited space, and the antennas do not interfere with each other or the interference is small, and the isolation is high, so that the antenna system has good transmitting and receiving performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0030] Figure 1 It is a structural schematic diagram of an antenna system provided by an embodiment of the utility model;

[0031] Figure 2 is a schematic diagram of a housing of an antenna system provided by an embodiment of the utility model;

[0032] Figure 3 It is a structural schematic diagram of a radio frequency connector provided by an embodiment of the utility model;

[0033] Figure 4 It is a schematic diagram of the installation of the antenna system provided by the embodiment of the utility model;

[0034] Figure 5 This is a schematic diagram of the relationship between the frequency and the standing wave ratio of the 5G main antenna provided by an embodiment of the utility model;

[0035] Figure 6 This is a schematic diagram of the relationship between the frequency and the standing wave ratio of the 5G diversity antenna provided by an embodiment of the utility model;

[0036] Figure 7 It is a schematic diagram of the relationship between the frequency and the standing wave ratio of the first 5G MIMO antenna provided in an embodiment of the utility model;

[0037] Figure 8 It is a schematic diagram of the relationship between the frequency and the standing wave ratio of the second 5G MIMO antenna provided in an embodiment of the present utility model;

[0038] Fig. 9 is a schematic diagram of the relationship between the frequency and the standing wave ratio of the first V2X antenna provided in an embodiment of the utility model;

[0039] Fig.10 is a schematic diagram of the relationship between the frequency and the standing wave ratio of the second V2X antenna provided in an embodiment of the utility model;

[0040] Fig.11 It is a schematic diagram of the relationship between the frequency and the standing wave ratio of the WIFI and Bluetooth integrated antenna provided by the embodiment of the utility model;

[0041] Fig.12 It is a schematic diagram of the relationship between the frequency and the standing wave ratio of the WIFI antenna provided by the embodiment of the utility model. DETAILED DESCRIPTION

[0042] The present application is described more clearly below in conjunction with specific embodiments. The following embodiments will help those skilled in the art to further understand the effects of the present application, but are not intended to limit the present application in any form. It should be noted that, for those of ordinary skill in the art, several variations and improvements may be made without departing from the concept of the present application. These all fall within the scope of protection of the present application.

[0043] It should be understood that when used in the present specification and the appended claims, the term "comprising" indicates the presence of described features, wholes, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or combinations thereof.

[0044] It should also be understood that the term “and / or” used in the specification and appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0045] In the description of the present application specification and the appended claims, the terms "first", "second", "third", etc. are only used to distinguish the descriptions and cannot be understood as indicating or implying relative importance.

[0046] References to "one embodiment" or "some embodiments" etc. described in the specification of this application mean that one or more embodiments of the present application include specific features, structures or characteristics described in conjunction with the embodiment. Therefore, the statements "in one embodiment", "in some embodiments", "in some other embodiments", "in some other embodiments", etc. that appear in different places in this specification do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. The terms "including", "comprising", "having" and their variations all mean "including but not limited to", unless otherwise specifically emphasized in other ways.

[0047] In addition, the “plurality” mentioned in the embodiments of the present application should be interpreted as two or more.

[0048] The following is a detailed description of the implementation of the present invention in conjunction with the specific drawings:

[0049] With the development of intelligent automobiles, automobiles need to receive more and more signals, the types of antennas increase accordingly, and the number of vehicle-mounted antennas also increases accordingly, but at the same time, vehicle-mounted antennas must develop in the direction of low cost and miniaturization.

[0050] At present, the vehicle communication system requires 10 vehicle antennas. If the design is based on the traditional shark fin antenna, due to the limited size of the PCB base plate, if a large number of antennas are assembled on the PCB base plate, the distance between the antennas will be too close, resulting in poor antenna isolation, thus affecting antenna performance. If multiple vehicle antennas are arranged in a dispersed manner, a longer wire harness is required, which will cause greater line loss and also affect antenna performance.

[0051] In order to solve the above problems, an embodiment of the present application provides an antenna system.

[0052] Figure 1 This is a schematic diagram of the structure of an antenna system provided by an embodiment of the utility model. Figure 1 , the antenna system may include:

[0053] Circuit board 10;

[0054] A positioning and satellite communication integrated antenna 21 disposed in the middle of the circuit board 10; and,

[0055] A 5G (5th Generation Mobile Communication Technology) main antenna 22, a first 5G MIMO (Multiple-Input Multiple-Output) antenna 23, a first V2X (vehicle to X) antenna 24, a WIFI and Bluetooth (BlueTooth, BT) integrated antenna 25, a 5G diversity antenna 26, a second 5G MIMO antenna 27, a WIFI antenna 28 and a second V2X antenna 29 are sequentially arranged along the edge of the circuit board 10;

[0056] For each antenna disposed along the edge of the circuit board 10 , the distance between adjacent antennas is greater than or equal to the minimum distance between the adjacent antennas without interfering with each other.

[0057] In this embodiment, the 5G main antenna 22, the first 5G MIMO antenna 23, the first V2X antenna 24, the WIFI and Bluetooth integrated antenna 25, the 5G diversity antenna 26, the second 5G MIMO antenna 27, the WIFI antenna 28, the second V2X antenna 29 and the positioning and satellite communication integrated antenna 21 can all be electrically connected to the circuit board 10 and are all located on the same surface of the circuit board 10, which is defined as the first surface. The above-mentioned circuit board 10 can be a PCB bottom plate.

[0058] The WIFI and Bluetooth integrated antenna 25 integrates a Bluetooth antenna and another WIFI antenna. Integrating the two together can significantly reduce the space occupied by the device and make the antenna system more compact and lightweight.

[0059] The integrated positioning and satellite communication antenna 21 integrates the positioning antenna and the satellite communication antenna, which can realize the miniaturization and lightness of the antenna system. The integrated positioning and satellite communication antenna 21 usually operates in a specific satellite communication frequency band, which is different from the operating frequency of other antennas and can coexist with other antennas.

[0060] Different types of antennas may interfere with each other due to factors such as operating frequency, gain, radiation direction, and physical distance. When laying out the antennas on the circuit board 10, the embodiment of the present application takes the above factors into full consideration, and optimizes the position of each antenna to ensure that each antenna can work normally and avoid mutual interference.

[0061] The minimum distance between adjacent antennas without mutual interference means that when the distance between two adjacent antennas is greater than or equal to the minimum distance, the two antennas may not interfere with each other or interfere very little. The minimum distance between any two adjacent antennas without mutual interference can be determined through relevant tests and is not specifically limited here.

[0062] For each antenna disposed along the edge of the circuit board 10 , the distance between adjacent antennas can be determined through experiments and is not specifically limited here.

[0063] The 5G main antenna 22, the first 5G MIMO antenna 23, the first V2X antenna 24, the WIFI and Bluetooth integrated antenna 25, the 5G diversity antenna 26, the second 5G MIMO antenna 27, the WIFI antenna 28 and the second V2X antenna 29 can all be made of plug-in steel sheets, which have low manufacturing costs and are more cost-effective. By optimizing the design and adjusting the shape, size and other parameters of the plug-in antenna, the plug-in steel sheet antenna can achieve higher gain and radiation performance, so that the antenna has better performance in signal transmission and reception.

[0064] The first V2X antenna 24 and the second V2X antenna 29 can be arranged in a vertical orientation, which has the advantages of low cost and miniaturization. The vertical design ensures good performance of radiation in the direction of the antenna, and miniaturization is conducive to reducing product costs. When designing the structural shell, reflection is increased to ensure antenna directivity and transceiver performance.

[0065] The integrated positioning and satellite communication antenna 21 may adopt a ceramic antenna with a stacked structure. From a performance perspective, ceramic materials have excellent high-frequency stability and can effectively reduce noise and loss during signal transmission.

[0066] In some possible implementations, see Figure 2 The antenna system may further include a housing 40 for encapsulating the circuit board 10 and the antennas disposed on the circuit board 10. The size of the housing 40 may be 85 mm*85 mm*25 mm.

[0067] In this embodiment, the positioning and satellite communication integrated antenna 21 is arranged in the middle of the circuit board 10, and the 5G main antenna 22, the first 5G MIMO antenna 23, the first V2X antenna 24, the WIFI and Bluetooth integrated antenna 25, the 5G diversity antenna 26, the second 5G MIMO antenna 27, the WIFI antenna 28 and the second V2X antenna 29 are arranged in sequence along the edge of the circuit board 10. The distance between adjacent antennas arranged along the edge of the circuit board 10 is greater than or equal to the minimum distance between the adjacent antennas without interfering with each other. Through the layout position of each antenna, the distance limit between adjacent antennas and the integrated arrangement of the positioning antenna and the satellite antenna, a large number of antennas can be combined in a limited space, the antenna layout is not too compact, and the antennas do not interfere with each other or the interference is small, and the isolation is high, so that the antenna system has good transmitting and receiving performance.

[0068] This embodiment provides a small combined antenna with a large number of antennas, a small size and good performance, which can be used with a vehicle-mounted wireless terminal to provide good transceiver performance and always keep the network communication status in the best and most stable state.

[0069] In some embodiments, the positioning and satellite communication integrated antenna 21 includes:

[0070] Positioning antennas;

[0071] a satellite receiving antenna located on the positioning antenna; and,

[0072] A satellite transmitting antenna located on a satellite receiving antenna.

[0073] Among them, the positioning antenna can support L1 and L5 frequency bands.

[0074] See also Figure 1 The integrated positioning and satellite communication antenna 21 uses a three-layer ceramic antenna, the bottom layer is the positioning antenna, the middle layer is the satellite receiving antenna, and the top layer is the satellite transmitting antenna. The integrated positioning and satellite communication antenna 21 can achieve miniaturization and lightweight of the antenna while ensuring performance. At the same time, through the combination of L1+L5 frequency band signals, high-precision positioning of the vehicle can be achieved.

[0075] In some embodiments, see Figure 1 , the 5G main antenna 22 and the 5G diversity antenna 26 are arranged diagonally, and the first 5G MIMO antenna 23 and the second 5G MIMO antenna 27 are arranged diagonally;

[0076] The 5G main antenna 22 and the first 5G MIMO antenna 23 are located on a first side of the circuit board 10, and the 5G diversity antenna 26 and the second 5G MIMO antenna 27 are located on a second side of the circuit board 10, and the first side and the second side are opposite sides.

[0077] In this embodiment, the first side and the second side are two sides of the aforementioned first surface, which are opposite sides and parallel to each other. The 5G main antenna 22 and the first 5G MIMO antenna 23 are both arranged along the first side, respectively located at two corners of the first side. The 5G diversity antenna 26 and the second 5G MIMO antenna 27 are both arranged along the second side, respectively located at two corners of the second side.

[0078] The frequency bands supported by each antenna included in the antenna system are shown in Table 1.

[0079] Table 1 Antenna supported frequency bands

[0080] antenna Supported frequency bands 5G main antenna 700~960MHz 1710~2690MHz 3300~5000MHz 5G diversity antenna 700~960MHz 1710~2690MHz 3300~5000MHz The first 5G MIMO antenna 1710~2690MHz 3300~5000MHz Second 5G MIMO antenna 1710~2690MHz 3300~5000MHz The first V2X antenna 5800~6000MHz Second V2X Antenna 5800~6000MHz WIFI and Bluetooth integrated antenna 2400~2500NHz 5150~5850MHz WIFI ANTENNA 5150~5850MHz Integrated antenna for positioning and satellite communications 1575.42MHz 1176.45MHz 1900~2200MHz

[0081] As shown in Table 1, the 5G main antenna 22 and the 5G diversity antenna 26 both operate in the 5G frequency band (700-960MHz, 1710-2690MHz, 3300-5000MHz), and the operating frequencies overlap. If the 5G main antenna 22 and the 5G diversity antenna 26 are closely arranged in the device and the distance is close, it will cause mutual influence between the two. Therefore, the 5G main antenna 22 and the 5G diversity antenna 26 are set diagonally so that the distance between the two is far to avoid mutual interference.

[0082] Similarly, referring to Table 1, the first 5G MIMO antenna 23 and the second 5G MIMO antenna 27 both operate in the 5G frequency band (1710-2690MHz, 3300-5000MHz), and the operating frequencies overlap. If the first 5G MIMO antenna 23 and the second 5G MIMO antenna 27 are closely arranged in the device and the distance is close, it will cause mutual influence between the two. Therefore, the first 5G MIMO antenna 23 and the second 5G MIMO antenna 27 are set diagonally so that the distance between the two is far to avoid mutual interference.

[0083] In some possible implementations, the 5G main antenna 22 and the 5G diversity antenna 26 may be respectively disposed at the upper right corner and the lower left corner of the circuit board 10; the first 5G MIMO antenna 23 and the second 5G MIMO antenna 27 may be respectively disposed at the upper left corner and the lower right corner of the circuit board 10. The positions of the 5G main antenna 22 and the 5G diversity antenna 26 may be interchangeable, and the positions of the first 5G MIMO antenna 23 and the second 5G MIMO antenna 27 may be interchangeable.

[0084] The 5G main antenna 22, the 5G diversity antenna 26, the first 5G MIMO antenna 23 and the second 5G MIMO antenna 27 can all be arranged along the length direction of the circuit board 10. The length direction of the circuit board 10 is consistent with the length direction of the vehicle and the driving direction of the vehicle. The first side and the second side are parallel to the length direction of the circuit board 10.

[0085] In some embodiments, see Figure 1 , the first V2X antenna 24 and the second V2X antenna 29 are arranged opposite to each other, and the WIFI and Bluetooth integrated antenna 25 and the WIFI antenna 28 are arranged opposite to each other;

[0086] The first V2X antenna 24 and the WIFI and Bluetooth integrated antenna 25 are located on the third side of the circuit board 10, and the second V2X antenna 29 and the WIFI antenna 28 are located on the fourth side of the circuit board 10. The third side and the fourth side are opposite sides.

[0087] In this embodiment, the third side and the fourth side are the other two sides of the first surface, which are opposite sides and parallel to each other. The first surface includes four sides, namely the first side, the second side, the third side and the fourth side.

[0088] The first V2X antenna 24 and the WIFI and Bluetooth integrated antenna 25 are all arranged along the third side, with a certain distance between them, and also with a certain distance between the adjacent antennas on the other side to avoid mutual interference. The second V2X antenna 29 and the WIFI antenna 28 are both arranged along the fourth side, with a certain distance between them, and also with a certain distance between the adjacent antennas on the other side to avoid mutual interference.

[0089] As shown in Table 1, both the first V2X antenna 24 and the second V2X antenna 29 operate in the frequency band of 5800MHz to 6000MHz, which is different from the 5G frequency band. Therefore, the interference with the aforementioned 5G antenna is very small. However, in order to ensure the coverage of the vehicle forward and vehicle rearward V2X, and to avoid mutual interference between the first V2X antenna 24 and the second V2X antenna 29, the first V2X antenna 24 and the second V2X antenna 29 can be arranged one after the other along the vehicle's driving direction.

[0090] Since 5G and WIFI antennas usually operate in similar 2.4GHz or 5GHz frequency bands, they will affect each other. In order to avoid mutual interference, a certain distance is required between the WIFI and Bluetooth integrated antenna 25 and the 5G diversity antenna 26, and between the WIFI antenna 28 and the second 5G MIMO antenna 27. At the same time, in order to avoid mutual interference between the WIFI and Bluetooth integrated antenna 25 and the WIFI antenna 28, the two are relatively arranged on two opposite sides.

[0091] The first V2X antenna 24, the second V2X antenna 29, the WIFI and Bluetooth integrated antenna 25 and the WIFI antenna 28 may all be arranged along the width direction of the circuit board 10. The width direction of the circuit board 10 is consistent with the width direction of the vehicle and is perpendicular to the driving direction of the vehicle. The third side and the fourth side are both parallel to the width direction of the circuit board 10.

[0092] The first V2X antenna 24 and the second V2X antenna 29 can be respectively arranged at the left and right edges of the circuit board 10 along the width direction of the circuit board 10. The WIFI and Bluetooth integrated antenna 25 and the WIFI antenna 28 can be respectively arranged at the left and right edges of the circuit board 10 along the width direction of the circuit board 10.

[0093] In some embodiments, the antenna system further comprises a radio frequency connector;

[0094] The radio frequency connector is used to connect the circuit board 10 and the vehicle-mounted wireless terminal.

[0095] The 5G main antenna 22, the first 5G MIMO antenna 23, the first V2X antenna 24, the WIFI and Bluetooth integrated antenna 25, the 5G diversity antenna 26, the second 5G MIMO antenna 27, the WIFI antenna 28, the second V2X antenna 29 and the positioning and satellite communication integrated antenna 21 are all connected to the RF connector through PCB traces.

[0096] The RF connector is mounted on the back side of the first side of the circuit board 10, and can be located in the middle of the back side. The RF connector can be a B2B RF connector.

[0097] The vehicle-mounted wireless terminal may be a T-BOX (Telematics BOX, telematics processor).

[0098] This embodiment implements communication between the antenna system and the vehicle-mounted wireless terminal through a radio frequency connector.

[0099] In some embodiments, see Figure 3 , the RF connector includes a first RF board 31 and a second RF board 32; the first RF board 31 is connected to the circuit board 10, and the second RF board 32 is connected to the vehicle-mounted wireless terminal;

[0100] The first RF board 31 is provided with a first connection terminal 311 , and the second RF board 32 is provided with a second connection terminal 321 ; the first connection terminal 311 is connected to the second connection terminal 321 in a one-to-one correspondence.

[0101] The number of the first connection terminals 311 may be greater than or equal to the number of antennas in the antenna system, so as to adapt to an antenna system with a large number of antennas. For example, in this embodiment, the number of the first connection terminals 311 may be 10, arranged in double rows, with 5 in each row.

[0102] The size of the RF connector can be 43mm*18mm*15mm, the impedance can be 50Ω, the maximum frequency can support 6GHz, the maximum standing wave ratio can be 1.4, and the maximum insertion loss can be 0.4db.

[0103] In some embodiments, the antenna system is disposed on the roof of the vehicle;

[0104] The first radio frequency board 31 , the circuit board 10 and the antenna disposed on the circuit board 10 are located outside the roof; the second radio frequency board 32 and the vehicle-mounted wireless terminal are located inside the roof.

[0105] See also Figure 4 For roof materials with strong signal shielding, such as iron, etc., the antenna system can be set outside the roof and the vehicle-mounted wireless terminal can be set inside the roof to avoid affecting the antenna signal. The roof is provided with a through hole for the first connection terminal 311 to pass through.

[0106] For roof materials with weak signal shielding, such as glass, etc., you can follow Figure 4 The antenna system and the vehicle-mounted wireless terminal can also be installed inside the vehicle.

[0107] Corresponding to the above antenna system, the embodiment of the utility model further provides a vehicle-mounted communication system, comprising any one of the above antenna systems and a vehicle-mounted wireless terminal, which has the same beneficial effects as the antenna system. The antenna system is connected to the vehicle-mounted wireless terminal.

[0108] Corresponding to the above-mentioned vehicle-mounted communication system, an embodiment of the utility model further provides a vehicle, comprising the above-mentioned vehicle-mounted communication system, having the same beneficial effects as the above-mentioned vehicle-mounted communication system.

[0109] Each antenna in the antenna system provided in the embodiment of the present application is tested to obtain the gain, efficiency and standing wave ratio of each antenna at different frequencies. The test results show that the antenna system provided in the embodiment of the present application meets the use requirements and has good performance.

[0110] Specifically, Table 2 shows the gain and efficiency of the 5G main antenna at different frequencies; Table 3 shows the gain and efficiency of the 5G diversity antenna at different frequencies; Table 4 shows the gain and efficiency of the first 5G MIMO antenna at different frequencies; Table 5 shows the gain and efficiency of the second 5G MIMO antenna at different frequencies; Table 6 shows the gain and efficiency of the first V2X antenna at different frequencies; Table 7 shows the gain and efficiency of the second V2X antenna at different frequencies; Table 8 shows the gain and efficiency of the WIFI and Bluetooth integrated antenna at different frequencies; Table 9 shows the gain and efficiency of the WIFI antenna at different frequencies. The unit of frequency is MHz, the unit of gain is dBi, and the unit of efficiency is %.

[0111] Figure 5 This is a diagram showing the relationship between the frequency and standing wave ratio of the 5G main antenna; Figure 6 This is a diagram showing the relationship between the frequency and the standing wave ratio of the 5G diversity antenna; Figure 7 This is a diagram showing the relationship between frequency and standing wave ratio of the first 5G MIMO antenna; Figure 8 This is a diagram showing the relationship between the frequency and the standing wave ratio of the second 5G MIMO antenna; Fig. 9 This is a diagram showing the relationship between the frequency and the standing wave ratio of the first V2X antenna; Fig.10 This is a diagram showing the relationship between the frequency and the standing wave ratio of the second V2X antenna; Fig.11 This is a diagram showing the relationship between the frequency and standing wave ratio of the WIFI and Bluetooth integrated antennas; Fig.12 This is a schematic diagram of the relationship between the frequency and standing wave ratio of a WIFI antenna. The horizontal axis is the frequency and the vertical axis is the standing wave ratio. Figures 5 to 8The frequency range is 500MHz to 6GHz, Fig. 9 and Fig.10 The frequency range is 4GHz to 7GHz, Fig.11 and Fig.12 The frequency range is 1GHz to 6GHz.

[0112] Table 2 Gain and efficiency of 5G main antenna at different frequencies

[0113]

[0114]

[0115] Table 3 Gain and efficiency of 5G diversity antenna at different frequencies

[0116]

[0117]

[0118] Table 4 Gain and efficiency of the first 5G MIMO antenna at different frequencies

[0119] frequency Gain efficiency frequency Gain efficiency frequency Gain efficiency 1710 0.12 40.57 2430 1.79 58.2 3900 1.54 53.35 1740 1.24 44.53 2460 1.68 56.42 3950 1.63 53.66 1770 1.95 47.01 2490 1.94 56.51 4000 1.83 54.11 1800 2.42 50.31 2520 2.15 56.84 4050 1.73 51.1 1830 2.46 52.15 2550 2.43 58.62 4100 1.46 49.8 1860 2.47 53.38 2580 2.56 58.29 4150 1.28 51.17 1890 2.49 55.13 2610 2.63 57.41 4200 0.86 49.78 1920 2.62 58.98 2640 2.63 55.93 4250 1.15 52.2 1950 2.84 62.67 2670 2.66 54.45 4300 1.41 51.98 1980 2.56 60.45 2690 2.7 54.01 4350 1.29 50.64 2010 2.62 61.71 4400 0.63 45.23 2040 2.49 60.12 4450 0.64 42.68 2070 2.39 60.38 3300 2.63 55.77 4500 0.35 37.23 2100 2.42 61.34 3350 2.41 55.06 4550 0.13 32.46 2130 2.8 62.45 3400 2.2 52.57 4600 -0.14 31.24 2160 3.06 61.14 3450 2.06 52.11 4650 -0.44 33.69 2190 3.34 60 3500 2 54.07 4700 -0.29 36.31 2220 3.81 63.62 3550 1.84 52.81 4750 -0.41 38.51 2250 3.94 63.37 3600 1.34 48.5 4800 -0.57 38.15 2280 4.08 63.2 3650 1.68 51.12 4850 -0.34 41.08 2310 3.99 61.6 3700 2.54 55.26 4900 -0.37 42.65 2340 3.58 59.29 3750 2.39 55.89 4950 -0.28 43.44 2370 2.98 59.5 3800 1.37 54.59 5000 -0.22 43.46 2400 2.18 58.56 3850 1.17 52.87

[0120] Table 5 Gain and efficiency of the second 5G MIMO antenna at different frequencies

[0121]

[0122]

[0123] Table 6 Gain and efficiency of the first V2X antenna at different frequencies

[0124]

[0125]

[0126] Table 7 Gain and efficiency of the second V2X antenna at different frequencies

[0127] frequency Gain efficiency 5800 -1.74 30.95 5810 -1.64 31.25 5820 -1.4 32.39 5830 -1.19 32.9 5840 -0.88 33.92 5850 -0.56 34.88 5860 -0.31 35.24 5870 0.08 36.43 5880 0.36 37.2 5890 0.64 37.94 5900 0.83 38.46 5910 1 38.45 5920 1.23 39.28 5930 1.42 39.44 5940 1.52 39.27 5950 1.51 39.22 5960 1.58 39.06 5970 1.46 38.11 5980 1.4 37.27 5990 1.35 36.78 6000 1.19 35.46

[0128] Table 8 Gain and efficiency of WIFI and Bluetooth integrated antennas at different frequencies

[0129] frequency Gain efficiency frequency Gain efficiency 1550 0.15 44.49 5150 1.01 36.19 1555 0.37 46.03 5200 1.03 36.62 1560 0.49 47.43 5250 1.15 44.97 1565 0.71 48.07 5300 0.98 40.88 1570 0.69 48.09 5350 1.22 39.8 1575 0.73 48.66 5400 1.97 31.57 1580 0.99 50.09 5450 2.41 32.96 1585 1.15 50.67 5500 2.73 34.53 1590 1.12 49.97 5550 3.14 36.97 1595 1.19 49.96 5600 3.48 40.07 1600 1.34 51.24 5650 3.42 39.97 2400 -0.14 37.86 5700 3.21 39.87 2410 -0.09 38.5 5750 2.59 36.54 2420 -0.15 38.81 5800 1.93 33.25 2430 -0.3 38.71 5850 1.31 30.06 2440 -0.39 39.3 2450 -0.58 37.71 2460 -0.36 37.41 2470 -0.28 37.06 2480 -0.22 36.45 2490 -0.14 36.64 2500 -0.22 35.73

[0130] Table 9 Gain and efficiency of WIFI antenna at different frequencies

[0131]

[0132]

[0133] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An antenna system, characterized in that: include: Circuit boards; A positioning and satellite communication integrated antenna disposed in the middle of the circuit board; as well as, A 5G main antenna, a first 5G MIMO antenna, a first V2X antenna, a WIFI and Bluetooth integrated antenna, a 5G diversity antenna, a second 5G MIMO antenna, a WIFI antenna and a second V2X antenna are sequentially arranged along the edge of the circuit board; For each antenna arranged along the edge of the circuit board, the distance between adjacent antennas is greater than or equal to the minimum distance between the adjacent antennas without interfering with each other.

2. The antenna system according to claim 1, characterized in that The positioning and satellite communication integrated antenna comprises: Positioning antennas; a satellite receiving antenna located on the positioning antenna; and, A satellite transmitting antenna is located on the satellite receiving antenna.

3. The antenna system according to claim 1, characterized in that The 5G main antenna and the 5G diversity antenna are arranged diagonally, and the first 5G MIMO antenna and the second 5G MIMO antenna are arranged diagonally; The 5G main antenna and the first 5G MIMO antenna are located on a first side of the circuit board, the 5G diversity antenna and the second 5G MIMO antenna are located on a second side of the circuit board, and the first side and the second side are opposite sides.

4. The antenna system according to claim 1, characterized in that The first V2X antenna and the second V2X antenna are arranged opposite to each other, and the WIFI and Bluetooth integrated antenna is arranged opposite to the WIFI antenna; The first V2X antenna and the WIFI and Bluetooth integrated antenna are located on the third side of the circuit board, the second V2X antenna and the WIFI antenna are located on the fourth side of the circuit board, and the third side and the fourth side are opposite sides.

5. The antenna system according to any one of claims 1 to 4, characterized in that: The antenna system also includes a radio frequency connector; The radio frequency connector is used to connect the circuit board and the vehicle-mounted wireless terminal.

6. The antenna system according to claim 5, characterized in that The RF connector includes a first RF board and a second RF board; the first RF board is connected to the circuit board, and the second RF board is connected to the vehicle-mounted wireless terminal; The first radio frequency board is provided with a first connection terminal, and the second radio frequency board is provided with a second connection terminal; the first connection terminal is connected to the second connection terminal in a one-to-one correspondence.

7. The antenna system according to claim 6, characterized in that The number of the first connection terminals is greater than or equal to the number of antennas in the antenna system.

8. The antenna system according to claim 6, characterized in that The antenna system is arranged on the roof; The first radio frequency board, the circuit board and the antenna arranged on the circuit board are located outside the roof; the second radio frequency board and the vehicle-mounted wireless terminal are located inside the roof.

9. A vehicle-mounted communication system, characterized in that: Comprising the antenna system and the vehicle-mounted wireless terminal according to any one of claims 1 to 8; The antenna system is connected to the vehicle-mounted wireless terminal.

10. A vehicle, characterized in that: Comprising the in-vehicle communication system as claimed in claim 9.

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