A multi-channel vehicle-mounted antenna box

Abstract

The utility model discloses a kind of multi-channel vehicle-mounted antenna boxes, including the shell of by lower shell and upper shell, still including antenna group being set in the shell;The antenna group includes GNSS antenna, at least two groups of wireless antenna, V2X antenna, BT antenna, two groups of the wireless antenna are respectively arranged in the two sides of the GNSS antenna, two groups of the wireless antenna are symmetrically arranged along GNSS antenna, the V2X antenna is arranged on one group of wireless antenna, and the BT antenna is arranged on another group of wireless antenna;The wireless antenna includes bottom substrate and upper substrate being set on the bottom substrate, the upper substrate is vertically arranged with the bottom substrate, wifi6E antenna is attached on the bottom substrate, 4G antenna is attached on the upper substrate.The overall structure of this antenna box is reasonably designed;Compact structure is installed in car central control position, spoiler and front and rear cross beam etc., with economy, convenient, beautiful, receiving signal strong features.

Description

Technical Field

[0001] This utility model belongs to the field of antenna technology, and in particular relates to a multi-channel vehicle-mounted antenna box. Background Technology

[0002] With the accelerated development of intelligent connected vehicles and smart transportation systems, vehicle-to-everything (V2X) communication technology is facing core requirements such as multi-band convergence, 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 achieves direct vehicle-to-vehicle communication (latency less than 60ms, reliability up to 99.999%) through NR Sidelink, Rel-17 extends to pedestrian interaction (V2P) and energy-saving mechanisms, and Rel-18 further optimizes multi-standard coexistence capabilities. China's "14th Five-Year Plan for the Development of the Information and Communication Industry" clearly promotes the deep integration of C-V2X with 5G and smart cities, accelerating the large-scale deployment of urban roads and highways. However, existing vehicle-mounted antenna systems need to simultaneously support multiple protocols such as 5G (downlink > 2Gbps, uplink > 200Mbps), V2X (communication distance > 300m, packet loss rate < 5%), dual-band GNSS (positioning error < 1m), and Wi-Fi 6 / BT. Traditional distributed designs suffer from problems such as large space occupation and signal interference (e.g., digital noise affecting GNSS accuracy). Therefore, this project focuses on developing an integrated multi-channel vehicle-mounted antenna system. Through electromagnetic compatibility optimization and compact structural design, it aims to solve the problem of multi-band coexistence interference and promote the evolution of vehicle-to-everything (V2X) communication towards a safer and more efficient direction.

[0003] Currently, most automotive antennas use shark fin antennas. However, with advancements in automotive technology, changes in aesthetic design, and the increasing number of communication antennas, traditional shark fin antennas can no longer accommodate all antennas and do not conform to a minimalist aesthetic. Integration into the vehicle body has become a crucial requirement for automotive antennas. Traditional GNSS navigation antennas are relatively large, and the use of double-layer stacking to cover two frequency bands results in a high profile. Shark fin antennas have size limitations and cannot integrate too many antennas. Summary of the Invention

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] A multi-channel vehicle-mounted antenna box includes a housing consisting of a lower shell and an upper shell, and an antenna assembly disposed within the housing;

[0006] The antenna group includes a GNSS antenna, at least two sets of wireless antennas, a V2X antenna, and a BT antenna. The two sets of wireless antennas are respectively located on both sides of the GNSS antenna and are symmetrically arranged along the GNSS antenna. The V2X antenna is located on one set of wireless antennas and the BT antenna is located on the other set of wireless antennas.

[0007] The wireless antenna includes a base plate and an upper plate disposed on the base plate. The upper plate is perpendicular to the base plate. A Wi-Fi 6E antenna is attached to the base plate, and a 4G antenna is attached to the upper plate.

[0008] Furthermore, let θ be the angle between the tilt direction of the upper substrate and the center of the GNSS antenna, where the angle is 30 to 40°.

[0009] Furthermore, the GNSS antenna includes an antenna body and a radiator and a transmitter disposed in the middle of the antenna body, with the transmitters respectively disposed at the four corners of the antenna body.

[0010] Furthermore, the 4G antenna operates in a frequency range of 617–960 MHz and 1710–3000 MHz.

[0011] The Wi-Fi 6E antenna operates at frequencies including 2400–2500 MHz, 5150–5850 MHz, and 5925–7125 MHz.

[0012] Furthermore, the V2X antenna operates at frequencies ranging from 5895 to 5925 MHz, and the BT antenna operates at frequencies ranging from 2400 to 2500 MHz.

[0013] Furthermore, the GNSS antenna supports signal frequencies including B1l, B1c, B2a, B2b, L1, L2, L5, G1, E1, E5a, and E5b.

[0014] The beneficial effects of this utility model are:

[0015] 1. The antenna of this utility model has a clever layout, which integrates multiple antennas in a limited space, covering multiple frequency bands such as 4G LTE, WiFi, V2X, BT and GNSS and has good isolation. It can be installed in the center console of the car, the front and rear spoilers and the front and rear crossbeams, etc., without affecting the appearance of the whole vehicle or other unshielded signal open areas inside the car.

[0016] 2. This solution provides a single-layer GNSS antenna implementation scheme, which reduces costs while ensuring good performance. It has a compact structure and good isolation between antennas. The antenna efficiency is far superior to that of traditional antenna boxes, and the isolation is also much higher than that of traditional antenna boxes. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the antenna assembly of this utility model;

[0019] Figure 3 This is a top view of the antenna assembly of this utility model;

[0020] Figure 4 These are the scattering parameters of the 4G antenna of this utility model;

[0021] Figure 5 These are the scattering parameters of the WiFi 6E antenna of this utility model;

[0022] Figure 6 These are the scattering parameters of the V2X antenna of this utility model;

[0023] Figure 7 These are the scattering parameters of the BT antenna of this utility model;

[0024] Figure 8 This is a coupling diagram of the 4G antenna and other antennas of this utility model (<-10dB);

[0025] Figure 9 This is a coupling diagram of the WiFi 6E antenna and other antennas of this utility model (<-15dB);

[0026] Figure 10 This is the coupling diagram of the BT antenna of this utility model with the other antennas (<-15dB);

[0027] Figure 11 This is a coupling diagram of the V2X of this utility model with the other antennas (<-27dB);

[0028] Figure 12 This is the standing wave diagram (<1.5) of the GNSS of this utility model;

[0029] Figure 13 This is the electric field radiation diagram of this utility model;

[0030] Figure 14 This is the electric field radiation diagram of this utility model;

[0031] Figure 15 This is the electric field radiation diagram of this utility model;

[0032] Figure 16 This is the electric field radiation diagram of this utility model;

[0033] Figure 17 This is the electric field radiation diagram of this utility model;

[0034] Figure 18This is a current intensity distribution diagram of this utility model;

[0035] Figure 19 This is the 3D radiation field shape of the antenna of this utility model;

[0036] Figure 20 This is the 3D radiation field shape of the antenna of this utility model;

[0037] Figure 21 This is the 3D radiation field shape of the antenna of this utility model;

[0038] Figure 22 This is the antenna efficiency diagram of this utility model (4G antenna);

[0039] Figure 23 This is the antenna efficiency diagram of this utility model (wifi6E antenna);

[0040] Figure 24 This is the antenna efficiency diagram of this utility model (V2X antenna);

[0041] Figure 25 This is the antenna efficiency diagram of this utility model (BT antenna).

[0042] Figure 26 This is the antenna efficiency diagram (GNSS antenna) of this utility model;

[0043] Figure 27 This is a GNSS satellite search data diagram of this utility model;

[0044] The parts in the attached diagram are labeled as follows:

[0045] 1. Lower shell; 2. Upper shell; 3. Antenna group; 31. GNSS antenna; 311. Antenna body; 312. Radiator; 313. Transmitter; 32. Wireless antenna; 321. Bottom substrate; 322. Upper substrate; 33. V2X antenna; 34. BT antenna. Detailed Implementation

[0046] The preferred embodiments of the present invention will now be described in detail with reference to 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 a clearer and more definite definition of the scope of protection of the present invention.

[0047] Example:

[0048] like Figures 1 to 27 As shown, a multi-channel vehicle-mounted antenna box includes a housing composed of a lower shell 1 and an upper shell 2, and also includes an antenna group 3 disposed within the housing;

[0049] The antenna group 3 includes a GNSS antenna 31, at least two sets of wireless antennas 32, a V2X antenna 33, and a BT antenna 34. The two sets of wireless antennas 32 are respectively disposed on both sides of the GNSS antenna 31, symmetrically arranged along the GNSS antenna 31. The V2X antenna 33 is disposed on one set of wireless antennas 32, and the BT antenna 34 is disposed on the other set of wireless antennas 32. Specifically, the wireless antenna 32 includes a base plate 321 and an upper plate 322 disposed on the base plate 321. The upper plate 322 is perpendicular to the base plate 321. A Wi-Fi 6E antenna is attached to the base plate 321, and a 4G antenna is attached to the upper plate 322. Preferably, the angle between the tilt direction of the upper plate 322 and the center of the GNSS antenna 31 is denoted as θ, and the angle is 30°–40°. The 4G antenna operates in a frequency range of 617–960MHz and 1710–3000MHz.

[0050] The Wi-Fi 6E antenna operates at frequencies of 2400–2500 MHz, 5150–5850 MHz, and 5925–7125 MHz. The V2X antenna 33 operates at frequencies of 5895–5925 MHz, and the BT antenna 34 operates at frequencies of 2400–2500 MHz.

[0051] Specifically, the GNSS antenna 31 includes an antenna body 311 and a radiator 312 and a transmitter 313 disposed in the middle of the antenna body 311. The transmitters 313 are respectively disposed at the four corners of the antenna body 311. The GNSS antenna supports signal frequencies including B1l, B1c, B2a, B2b, L1, L2, L5, G1, E1, E5a, and E5b.

[0052] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A multi-channel vehicle-mounted antenna box, comprising a housing composed of a lower shell (1) and an upper shell (2), characterized in that: It also includes an antenna assembly (3) disposed within the housing; The antenna group (3) includes a GNSS antenna (31), at least two sets of wireless antennas (32), a V2X antenna (33), and a BT antenna (34). The two sets of wireless antennas (32) are respectively located on both sides of the GNSS antenna (31) and are symmetrically arranged along the GNSS antenna (31). The V2X antenna (33) is located on one set of wireless antennas (32), and the BT antenna (34) is located on the other set of wireless antennas (32). The wireless antenna (32) includes a base plate (321) and an upper plate (322) disposed on the base plate (321). The upper plate (322) is perpendicular to the base plate (321). A Wi-Fi 6E antenna is attached to the base plate (321), and a 4G antenna is attached to the upper plate (322).

2. The multi-channel vehicle-mounted antenna box according to claim 1, characterized in that: Let θ be the angle between the tilt direction of the upper substrate (322) and the center of the GNSS antenna (31), and the angle be 30-40°.

3. A multi-channel vehicle-mounted antenna box according to claim 1, characterized in that: The GNSS antenna (31) includes an antenna body (311) and a radiator (312) and a transmitter (313) disposed in the middle of the antenna body (311), with the transmitters (313) respectively disposed at the four corners of the antenna body (311).

4. A multi-channel vehicle-mounted antenna box according to claim 1, characterized in that: The 4G antenna operates in frequencies ranging from 617 to 960 MHz and from 1710 to 3000 MHz. The Wi-Fi 6E antenna operates at frequencies including 2400–2500 MHz, 5150–5850 MHz, and 5925–7125 MHz.

5. A multi-channel vehicle-mounted antenna box according to claim 1, characterized in that: The V2X antenna (33) operates at frequencies ranging from 5895 to 5925 MHz, and the BT antenna (34) operates at frequencies ranging from 2400 to 2500 MHz.

6. A multi-channel vehicle-mounted antenna box according to claim 1, characterized in that: The GNSS antenna (31) supports signal frequencies including B1l, B1c, B2a, B2b, L1, L2, L5, G1, E1, E5a, and E5b.

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