Vehicle-mounted integrated antenna box

Abstract

The invention discloses a vehicle-mounted integrated antenna box, which comprises a shell consisting of a lower shell and an upper shell, and is characterized by further comprising an antenna group arranged in the shell, the antenna group comprises a GNSS antenna, a Main antenna, an Aux antenna, a first MIMO antenna, a second MIMO antenna, a WIFI6e antenna, a V2X antenna and a BT antenna. The GNSS antenna is arranged at one corner of the lower shell, the Main antenna and the Aux antenna are vertically arranged along one side of the GNSS antenna, the BT antenna is arranged at a vertical point, a first MIMO antenna and a second MIMO antenna are respectively arranged above the Main antenna and the Aux antenna, and the Main antenna and the Aux antenna are sequentially provided with two groups of WIFI6e antennas and V2X antennas along two vertical sides. The overall structural design is reasonable, the structure is compact, the four 5G antennas, the two Wi-Fi 6e antennas, the two V2X antennas, the one BT antenna and the one GNSS antenna are integrated in one antenna box, the cost is saved, arrangement of the overall vehicle-mounted antenna system is facilitated, and the antenna is economical, convenient, attractive and high in signal receiving capacity.

Description

Technical Field

[0001] The present invention belongs to the technical field of antennas, and particularly relates to an in-vehicle integrated antenna box. Background Art

[0002] The blueprint of the 5G network is a high speed 100 times that of 4G, reaching 10 Gbit / s, a low latency of less than 1 ms, a high density supporting more than 100 billion connections, and a high capacity 1000 times that of 4G. Applying 5G antennas to vehicles to achieve vehicle networking and autonomous driving and other applications will be a trend. With the development of automotive intelligence, automotive antennas are not only for wireless local area networks, mobile networks, and positioning; but also add Bluetooth antennas to achieve functions such as keyless entry and Internet of Things connections. Now the technology of domestic cars is becoming more and more mature. Currently, cars are developing towards intelligent terminals rather than simply driving tools, requiring more and more antennas to be integrated inside the vehicle to obtain information such as vehicles, roads, communications, positioning, environmental perception, and information processing.

[0003] With the accelerated development of intelligent connected vehicles and intelligent transportation systems, in-vehicle communication technology is facing the core requirements of multi-band integration, high integration, and low latency and high reliability. The 3GPP 5G Rel-16 to Rel-18 standards provide technical support for V2X technology. For example, Rel-16 enables direct vehicle-to-vehicle communication through NR Sidelink (with a latency lower than 60 ms and a reliability of 99.999%), Rel-17 extends to pedestrian interaction (V2P) and energy-saving mechanisms, and Rel-18 further optimizes the multi-mode coexistence ability. However, existing in-vehicle antenna systems need to support multiple protocols such as 5G (downlink > 2 Gbps, uplink > 200 Mbps), V2X (communication distance > 300 m, packet loss rate < 5%), dual-band GNSS (positioning error < 1 m), Wi-Fi 6 / BT, etc. Traditional decentralized designs have problems such as large space occupation and signal interference (such as digital noise affecting GNSS accuracy). Therefore, this project focuses on developing an integrated multi-channel in-vehicle antenna system, and through electromagnetic compatibility optimization and compact structure design, solves multi-band coexistence interference and promotes the evolution of vehicle networking towards a safer and more efficient direction.

[0004] Currently, most mainstream automotive antennas use shark fin antennas. However, with the development of automotive technology, changes in appearance aesthetics, and the gradual increase in the number of communication antennas, using traditional shark fins can no longer accommodate all antennas, which does not conform to the simple appearance aesthetics. Being integrated into the vehicle body has become an important requirement for in-vehicle antennas. Traditional GNSS navigation antennas are relatively large in size, and double-layer stacking is used to cover double frequency bands, resulting in a relatively high profile. Summary of the Invention

[0005] To solve the above technical problems, one technical solution adopted by the present invention is:

[0006] An in-vehicle integrated antenna box, comprising a housing composed of a lower shell and an upper shell, characterized in that: it further comprises an antenna group arranged in the housing;

[0007] The antenna group includes a GNSS antenna, a Main antenna, an Aux antenna, a first MIMO antenna, a second MIMO antenna, a WIFI6e antenna, a V2X antenna, and a BT antenna; the GNSS antenna is arranged at a corner of the lower shell, the Main antenna and the Aux antenna are vertically arranged along one side of the GNSS antenna, the BT antenna is arranged at the vertical point, the first MIMO antenna and the second MIMO antenna are respectively arranged above the Main antenna and the Aux antenna, and two groups of WIFI6e antennas and V2X antennas are sequentially arranged along the two vertical sides of the Main antenna and the Aux antenna.

[0008] Further, the Main antenna includes at least two groups of parallel branches, namely a first branch and a second branch, the first branch and the second branch are arranged parallel to the vertical side, a third branch is arranged at the ends of the first branch and the second branch, and the third branch is perpendicular to the first branch and the second branch and extends downward.

[0009] Further, the Aux antenna includes at least two groups of parallel branches, namely a fourth branch and a fifth branch, the fourth branch and the fifth branch are arranged parallel to the vertical side, a sixth branch is arranged at the ends of the fourth branch and the fifth branch, and the sixth branch is perpendicular to the fourth branch and the fifth branch and extends downward.

[0010] Further, the GNSS antenna includes an antenna body, a radiator and a transmitter arranged in the middle of the antenna body, and the transmitters are respectively arranged at the four corners of the antenna body.

[0011] Further, the Main antenna and the Aux antenna are 5G antennas, and their operating frequency ranges include: 700~1000MHz and 1700~6000MHz;

[0012] The operating frequency of the WIFI6e antenna includes: 2400~2500MHz, 5150~5850MHz, and 5925~7125MHz.

[0013] Further, the operating frequency of the V2X antenna includes: 5895~5925MHz, and the operating frequency of the BT antenna includes: 2400~2500MHz.

[0014] Further, the signal frequency points supported by the GNSS antenna include B1l, B1c, B2a, B2b, L1, L2, L5, G1, E1, E5a, E5b.

[0015] Advantages of the present invention:

[0016] The antennas of the present invention are ingeniously arranged to integrate multiple antennas in a limited space. Four 5G antennas, two Wi-Fi 6e antennas, two V2X antennas, one BT antenna, and one GNSS antenna are integrated in an antenna box, saving costs and facilitating the layout of the overall vehicle-mounted antenna system. It has the characteristics of economy, convenience, aesthetics, and strong signal reception, covering multiple frequency bands of 5G, WiFi, V2X, BT, and GNSS and having good isolation. The single-layer GNSS antenna solution reduces costs while ensuring good performance. It can be installed inside the vehicle without affecting the overall vehicle appearance, and can be installed near the front instrument panel of the vehicle and other signal-free areas without metal shielding inside the vehicle. Brief Description of the Drawings

[0017] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 is a schematic diagram of the antenna group structure of the present invention;

[0019] Figure 3 is a structural diagram of the GNSS antenna of the present invention;

[0020] Figure 4 is a structural diagram of the Main antenna and Aux antenna of the present invention;

[0021] Figure 5 is an electric field distribution diagram of the GNSS antenna of the present invention (1.227 GHz);

[0022] Figure 6 is an electric field distribution diagram of the GNSS antenna of the present invention (1.575 GHz);

[0023] Figure 7 is a current distribution diagram of the GNSS antenna of the present invention (1.227 GHz);

[0024] Figure 8 is a current distribution diagram of the GNSS antenna of the present invention (1.575 GHz);

[0025] Figure 9 is a 3D gain diagram of the GNSS antenna of the present invention (1.2273 GHz, 3D Gain Pattern);

[0026] Figure 10 is a 3D gain diagram of the GNSS antenna of the present invention (1.575 GHz, 3D Gain Pattern);

[0027] Figure 11 is an electric field distribution diagram of the Main antenna and Aux antenna of the present invention (700 MHz);

[0028] Figure 12 These are the electric field distribution diagrams (2.7 GHz) of the Main antenna and Aux antenna of the present invention;

[0029] Figure 13 These are the electric field distribution diagrams (5 GHz) of the Main antenna and Aux antenna of the present invention;

[0030] Figure 14 These are the current distribution diagrams (700 MHz) of the Main antenna and Aux antenna of the present invention;

[0031] Figure 15 These are the current distribution diagrams (2.7 GHz) of the Main antenna and Aux antenna of the present invention;

[0032] Figure 16 These are the current distribution diagrams (5 GHz) of the Main antenna and Aux antenna of the present invention;

[0033] Figure 17 These are the 3D gain diagrams (700 MHz, 3D Gain Pattern) of the Main antenna and Aux antenna of the present invention;

[0034] Figure 18 These are the 3D gain diagrams (2.7 GHz, 3D Gain Pattern) of the Main antenna and Aux antenna of the present invention;

[0035] Figure 19 These are the 3D gain diagrams (5 GHz, 3D Gain Pattern) of the Main antenna and Aux antenna of the present invention;

[0036] Figure 20 These are the electric field distribution diagrams (2.7 GHz) of the MIMO antenna of the present invention;

[0037] Figure 21 These are the electric field distribution diagrams (5 GHz) of the MIMO antenna of the present invention;

[0038] Figure 22 These are the current distribution diagrams (2.7 GHz) of the MIMO antenna of the present invention;

[0039] Figure 23 These are the current distribution diagrams (5 GHz) of the MIMO antenna of the present invention;

[0040] Figure 24 These are the 3D gain diagrams (2.7 GHz, 3D Gain Pattern) of the MIMO antenna of the present invention;

[0041] Figure 25 These are the 3D gain diagrams (5 GHz, 3D Gain Pattern) of the MIMO antenna of the present invention;

[0042] Figure 26 is the electric field distribution diagram of the WIFI6e antenna of the present invention (2.45 GHz);

[0043] Figure 27 is the electric field distribution diagram of the WIFI6e antenna of the present invention (6 GHz);

[0044] Figure 28 is the current distribution diagram of the WIFI6e antenna of the present invention (2.45 GHz);

[0045] Figure 29 is the current distribution diagram of the WIFI6e antenna of the present invention (6 GHz);

[0046] Figure 30 is the 3D gain diagram of the WIFI6e antenna of the present invention (2.45 GHz, 3D Gain Pattern);

[0047] Figure 31 is the 3D gain diagram of the WIFI6e antenna of the present invention (6 GHz, 3D Gain Pattern);

[0048] Figure 32 is the electric field distribution diagram of the V2X antenna of the present invention;

[0049] Figure 33 is the current distribution diagram of the V2X antenna of the present invention;

[0050] Figure 34 is the 3D gain diagram of the V2X antenna of the present invention (3D Gain Pattern);

[0051] Figure 35 is the electric field distribution diagram of the BT antenna of the present invention;

[0052] Figure 36 is the current distribution diagram of the BT antenna of the present invention;

[0053] Figure 37 is the 3D gain diagram of the BT antenna of the present invention (3D Gain Pattern);

[0054] Figure 38 is the efficiency diagram of the Main antenna of the present invention (efficiency);

[0055] Figure 39 is the efficiency diagram of the Aux antenna of the present invention (efficiency);

[0056] Figure 40 is the efficiency diagram of the first MIMO antenna of the present invention (efficiency);

[0057] Figure 41 is the efficiency diagram of the second MIMO antenna of the present invention;

[0058] Figure 42 is the efficiency diagram of the first WIFI6e antenna of the present invention;

[0059] Figure 43 is the efficiency diagram of the second WIFI6e antenna of the present invention;

[0060] Figure 44 is the efficiency diagram of the first V2X antenna of the present invention;

[0061] Figure 45 is the efficiency diagram of the second V2X antenna of the present invention;

[0062] Figure 46 is the efficiency diagram of the BT antenna of the present invention;

[0063] Figure 47 is the efficiency diagram of the GNSS antenna of the present invention;

[0064] Figure 48 is the return loss diagram of the Main antenna and Aux antenna of the present invention;

[0065] Figure 49 is the return loss diagram of the WIFI6e antenna of the present invention;

[0066] Figure 50 is the return loss diagram of the BT antenna of the present invention;

[0067] Figure 51 is the return loss diagram of the V2X antenna of the present invention;

[0068] Figure 52 is the isolation diagram of the Main antenna and Aux antenna of the present invention;

[0069] The labels of each part in the attached drawings are as follows:

[0070] 1. Lower shell; 2. Upper shell; 3. Antenna group; 31. GNSS antenna; 32. Main antenna;

[0071] 321. First branch; 322. Second branch; 323. Third branch; 33. Aux antenna; 331. Fourth branch; 332. Fifth branch; 333. Sixth branch; 34. First MIMO antenna; 35. Second MIMO antenna; 36. WIFI6e antenna; 37. V2X antenna; 38. BT antenna. Detailed implementation mode

[0072] The following elaborates on the preferred embodiments of the present invention in conjunction with the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making the protection scope of the present invention more clearly defined.

[0073] Embodiment:

[0074] As Figures 1 to 52 shown, a vehicle-mounted integrated antenna box includes a housing composed of a lower housing 1 and an upper housing 2, and is characterized in that: it further includes an antenna group 3 arranged in the housing;

[0075] The antenna group 3 includes a GNSS antenna 31, a Main antenna 32, an Aux antenna 33, a first MIMO antenna 34, a second MIMO antenna 35, a WIFI6e antenna 36, a V2X antenna 37, and a BT antenna 38; the GNSS antenna 31 is arranged at a corner of the lower housing 1, the Main antenna 32 and the Aux antenna 33 are vertically arranged along one side of the GNSS antenna 31, the BT antenna 38 is arranged at the vertical point, the first MIMO antenna 34 and the second MIMO antenna 35 are respectively arranged above the Main antenna 32 and the Aux antenna 33, and two groups of WIFI6e antennas 36 and V2X antennas 37 are sequentially arranged along the two vertical sides of the Main antenna 32 and the Aux antenna 33. The Main antenna 32 and the Aux antenna 33 are 5G antennas, and their operating frequency ranges include: 700 - 1000 MHz and 1700 - 6000 MHz; the operating frequency of the WIFI6e antenna 36 includes: 2400 - 2500 MHz, 5150 - 5850 MHz, and 5925 - 7125 MHz. The operating frequency of the V2X antenna 37 includes: 5895 - 5925 MHz, and the operating frequency of the BT antenna 38 includes: 2400 - 2500 MHz. The GNSS antenna 31 supports signal frequency points including B1l, B1c, B2a, B2b, L1, L2, L5, G1, E1, E5a, E5b.

[0076] Specifically, the Main antenna 32 includes at least two groups of parallel branches, namely a first branch 321 and a second branch 322. The first branch 321 and the second branch 322 are arranged parallel to the vertical side. A third branch 323 is provided at the ends of the first branch 321 and the second branch 322, and the third branch 323 extends vertically downward with respect to the first branch 321 and the second branch 322. The Aux antenna 33 includes at least two groups of parallel branches, namely a fourth branch 331 and a fifth branch 332. The fourth branch 331 and the fifth branch 332 are arranged parallel to the vertical side. A sixth branch 333 is provided at the ends of the fourth branch 331 and the fifth branch 332, and the sixth branch 333 extends vertically downward with respect to the fourth branch 331 and the fifth branch 332. The GNSS antenna 31 includes an antenna body 311, a radiator 312 and a transmitter 313 disposed in the middle of the antenna body 311, and the transmitters 313 are respectively disposed at the four corners of the antenna body 311.

[0077] The above are only the embodiments of the present invention, and do not limit the patent scope of the present invention. Any equivalent structural transformation made by using the content of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, shall be equally included in the patent protection scope of the present invention.

Claims

1. An in-vehicle integrated antenna box, comprising a housing composed of a lower shell (1) and an upper shell (2), characterized in that: It further includes an antenna group (3) disposed inside the housing; The antenna group (3) includes a GNSS antenna (31), a Main antenna (32), an Aux antenna (33), a first MIMO antenna (34), a second MIMO antenna (35), a WIFI6e antenna (36), a V2X antenna (37), and a BT antenna (38); the GNSS antenna (31) is disposed at a corner of the lower housing (1), the Main antenna (32) and the Aux antenna (33) are vertically arranged along one side of the GNSS antenna (31), the BT antenna (38) is disposed at the vertical point, the first MIMO antenna (34) and the second MIMO antenna (35) are respectively disposed above the Main antenna (32) and the Aux antenna (33), and two groups of WIFI6e antennas (36) and V2X antennas (37) are sequentially arranged along the two vertical sides of the Main antenna (32) and the Aux antenna (33).

2. The integrated vehicle-mounted antenna box according to claim 1, wherein: The Main antenna (32) includes at least two groups of parallel branches, namely a first branch (321) and a second branch (322), the first branch (321) and the second branch (322) are arranged parallel to the vertical side, a third branch (323) is disposed at the ends of the first branch (321) and the second branch (322), and the third branch (323) is perpendicular to the first branch (321) and the second branch (322) and extends downward.

3. The vehicle-mounted integrated antenna box according to claim 1, characterized in that: The Aux antenna (33) includes at least two groups of parallel branches, namely a fourth branch (331) and a fifth branch (332), the fourth branch (331) and the fifth branch (332) are arranged parallel to the vertical side, a sixth branch (333) is disposed at the ends of the fourth branch (331) and the fifth branch (332), and the sixth branch (333) is perpendicular to the fourth branch (331) and the fifth branch (332) and extends downward.

4. The vehicle-mounted integrated antenna box according to claim 1, wherein: The GNSS antenna (31) includes an antenna body (311), a radiator (312) and a transmitter (313) disposed in the middle of the antenna body (311), and the transmitters (313) are respectively disposed at the four corners of the antenna body (311).

5. The vehicle-mounted integrated antenna box according to claim 1, characterized in that: The Main antenna (32) and the Aux antenna (33) are 5G antennas, and their operating frequency ranges include: 700 - 1000 MHz and 1700 - 6000 MHz; The operating frequency of the WIFI6e antenna (36) includes: 2400 - 2500 MHz, 5150 - 5850 MHz, and 5925 - 7125 MHz.

6. The vehicle-mounted integrated antenna box according to claim 1, characterized in that: The operating frequency of the V2X antenna (37) includes: 5895 - 5925 MHz, and the operating frequency of the BT antenna (38) includes: 2400 - 2500 MHz.

7. The vehicle-mounted integrated antenna box according to claim 1, characterized in that: The signal frequency points supported by the GNSS antenna (31) include B1l, B1c, B2a, B2b, L1, L2, L5, G1, E1, E5a, E5b.

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