Reflector device of GNSS (Global Navigation Satellite System) antenna and small multi-band GNSS high-precision navigation antenna

Abstract

The utility model relates to a reflector device of a GNSS (Global Navigation Satellite System) antenna and a small-sized multi-band GNSS high-precision navigation antenna, relating to the technical field of automobile antennas, in particular to a reflector device of a GNSS antenna matched with the small-sized multi-band GNSS high-precision navigation antenna for use. The reflector device of the GNSS antenna comprises a reflection cavity, a PCBA circuit board, a GNSS dielectric antenna and an output line. The reflection cavity is installed on the PCBA circuit board, the GNSS dielectric antenna is installed on the PCBA circuit board in the middle of the reflection cavity, and the signal output end of the GNSS dielectric antenna is connected with the PCBA circuit board and connected with the connector through an output line. The reflector device of the GNSS antenna adapts to an automobile installation position and a complex installation environment, so that the axial ratio, the phase centrality (PCO) and the phase deviation (PCV) of the GNSS (L1 + L2 + L5) high-precision navigation antenna meet the requirements of a high-precision application scene.

Description

Technical Field

[0001] This utility model relates to the field of automotive antenna technology, specifically to a reflector device for a GNSS antenna used in conjunction with a small multi-band GNSS high-precision navigation antenna. Background Technology

[0002] We provide cloud-integrated GNSS (Navigation Satellite System) solutions for connected car customers. We offer consumers a high-precision lane-level navigation experience and, through GNSS-based positioning, effectively improve navigation accuracy in complex driving environments. Even under adverse conditions such as multipath interference, we ensure the integrity of received satellite signals. Combined with C-V2X functionality, we address the high accident rate caused by heavy traffic and complex traffic patterns, enhancing the overall positioning capabilities of the terminal. We also provide nationwide real-time, high-precision location calculation services for autonomous vehicle customers.

[0003] Intelligent connected vehicles are not only one of the most important application scenarios for 5G, but also a core direction of new infrastructure in the field of artificial intelligence. High-precision maps are essential for achieving high-level autonomous driving (level 3 and above), and will become a crucial point for the commercialization of high-precision maps in the future.

[0004] Intelligent connected vehicles have laid a new direction for automotive technology development by integrating Global Positioning System (GNSS) navigation technology, vehicle-to-vehicle communication technology (V2X), wireless communication (5G) and remote sensing technology, achieving compatibility between manual driving and autonomous driving.

[0005] Current GNSS antenna designs are relatively large and heavy, making them inconvenient to install and use. Utility Model Content

[0006] The purpose of this utility model is to provide a reflector device for a GNSS antenna and a small multi-band GNSS high-precision navigation antenna to address the above-mentioned deficiencies. The reflector device for the GNSS antenna is a reflector device for a GNSS antenna used in conjunction with a small multi-band GNSS high-precision navigation antenna, making the GNSS antenna a small-sized and lightweight GNSS high-precision navigation antenna. It is a car built-in antenna design structure that can be installed in multiple locations inside the vehicle and simultaneously meet the overall vehicle layout requirements.

[0007] The reflector device of the GNSS antenna and the miniature multi-band GNSS high-precision navigation antenna are achieved by the following technical solutions:

[0008] The reflector assembly of a GNSS antenna includes a reflector cavity, a PCBA circuit board, a GNSS dielectric antenna, and an output line. The reflector cavity is mounted on the PCBA circuit board, and the GNSS dielectric antenna is mounted on the PCBA circuit board in the middle of the reflector cavity. The signal output terminal of the GNSS dielectric antenna is connected to the PCBA circuit board and then connected to a connector via the output line.

[0009] The reflective cavity can be four single pieces erected on a PCBA circuit board to form a quadrilateral cavity; the reflective cavity can also be an integral hollow, centrally symmetrical, four-sided hollowed-out patterned piece; the reflective cavity can also be an integral hollow, centrally symmetrical, multi-sided hollowed-out patterned piece; the reflective cavity is a concave-convex integral hollow shape, a centrally symmetrical, multi-sided hollowed-out patterned piece.

[0010] The GNSS dielectric antenna is placed on the bottom plane of the reflective cavity to reduce the influence of the crossbeam and other surrounding parts on the antenna. The size can be adjusted according to the size of the antenna and the installation position on the vehicle body. The width and height of the plate determine the antenna's radiation performance (gain, axial ratio, phase centering coefficient PCO, and phase center deviation PCV) and anti-interference ability.

[0011] The aforementioned reflective cavity uses a metal reflective cavity to completely isolate the antenna from the influence of other surrounding components at the antenna mounting location. Since the installation environment significantly affects important antenna parameters, these negative influences—specifically, the significant changes in the axial ratio when directly mounting an independent antenna body at the vehicle body mounting location, which are unacceptable—are addressed by employing a quadrilateral cavity, a four-sided perforated textured sheet, or a multi-sided perforated textured sheet. The back cavity reflection is designed to improve and eliminate these adverse effects.

[0012] The reflector device of this utility model GNSS antenna is used in conjunction with a small multi-band GNSS high-precision navigation antenna.

[0013] A small multi-band GNSS high-precision navigation antenna includes a reflector device for the GNSS antenna, and also includes a housing, a base, a connector, a shield, and self-tapping screws.

[0014] The reflector of the GNSS antenna is equipped with a shielding cover at the bottom to shield electromagnetic interference, which can prevent interference signals, protect components, and effectively improve circuit performance, thereby ensuring the reliability and performance of the entire circuit system.

[0015] The reflector assembly of the GNSS antenna, along with the shielding cover, is mounted on the base using self-tapping screws. The outer casing is fitted over the reflector assembly of the GNSS antenna and fixed to the upper part of the base.

[0016] The reflector device of this GNSS antenna, when used in conjunction with a small, multi-band GNSS high-precision navigation antenna, has the following advantages:

[0017] 1. Due to the miniaturization of the reflector device of the GNSS antenna, when used in conjunction with a small multi-band GNSS high-precision navigation antenna, the antenna design, structure, and layout meet the antenna performance requirements.

[0018] 2. Lightweight product design;

[0019] 3. It can be applied to different interior space layouts in vehicles;

[0020] 4. Installation scenarios are not easily affected by the external installation environment;

[0021] 5. Under the action of the reflective cavity, AR, PCO, and PCV are guaranteed, and antenna gain can also be improved.

[0022] 6. The reflector device of the GNSS antenna is equipped with a shielding cover at the bottom to shield electromagnetic interference, which can prevent interference signals, protect components, and effectively improve circuit performance, so as to ensure the reliability and performance of the entire circuit system.

[0023] 7. The reflector device of the GNSS antenna is adapted to the vehicle installation location and complex installation environment, so that the axial ratio, phase center of gravity (PCO) and phase deviation (PCV) of the GNSS (L1+L2+L5) high-precision navigation antenna meet the requirements of high-precision application scenarios. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. In the drawings:

[0025] Figure 1 This is a schematic diagram of the reflective cavity in the antenna configuration of this utility model embodiment. Figure 1 ;

[0026] Figure 2 This is a schematic diagram of the reflective cavity in the antenna configuration of this utility model embodiment. Figure 2 ;

[0027] Figure 3 This is a schematic diagram of the reflective cavity in the antenna configuration of this utility model embodiment. Figure 3 ;

[0028] Figure 4 This is a schematic diagram of the present invention used in conjunction with a small multi-band GNSS high-precision navigation antenna.

[0029] Figure 5This is a schematic diagram of the structure of this utility model used in conjunction with a small multi-band GNSS high-precision navigation antenna.

[0030] In the diagram: 1. Reflector cavity, 2. PCBA circuit board, 3. GNSS dielectric antenna, 4. Output line, 5. Connector, 6. Housing, 7. Base, 8. Shielding cover;

[0031] 1-1. Quadrilateral cavity; 1-2. Four-sided hollowed-out pattern sheet; 1-3. Multi-sided hollowed-out pattern sheet. Detailed Implementation

[0032] See attached document Figure 1-5 The reflector assembly of the GNSS antenna includes a reflector cavity 1, a PCBA circuit board 2, a GNSS dielectric antenna 3, and an output line 4. The reflector cavity 1 is mounted on the PCBA circuit board 2, the GNSS dielectric antenna 3 is mounted on the PCBA circuit board 2 in the middle of the reflector cavity, the signal output terminal of the GNSS dielectric antenna is connected to the PCBA circuit board 2, and is connected to the connector 5 through the output line 4.

[0033] The aforementioned reflective cavity 1 can be formed by four single-piece bodies erected on a PCBA circuit board to form a quadrilateral cavity 1-1 (see attached diagram). Figure 1 The reflective cavity 1 can also be a hollow, centrally symmetrical, four-sided perforated sheet 1-2 (see attached diagram). Figure 2 The reflective cavity 1 can also be an integral, hollow, centrally symmetrical, multi-faceted perforated sheet 1-3 (see attached diagram). Figure 3 The reflective cavity 1 is a hollow, concave-convex integral sheet with a centrally symmetrical, multi-faceted hollow texture.

[0034] The GNSS dielectric antenna 3 is placed on the bottom plane of the reflective cavity to reduce the influence of the crossbeam and other surrounding parts on the antenna. The size can be adjusted according to the size of the antenna and the installation position on the vehicle body. The width and height of the plate determine the antenna's radiation performance (gain, axial ratio, phase centering coefficient PCO, and phase center deviation PCV) and anti-interference ability.

[0035] The aforementioned reflective cavity 1 is a metal reflective cavity, completely isolating the antenna from the influence of other surrounding parts at the antenna mounting location. Since the installation environment significantly affects important antenna parameters, to eliminate these negative influences—specifically, the significant changes in the axial ratio when directly mounting an independent antenna body at the vehicle body mounting location, which are unacceptable—this invention employs a quadrilateral cavity 1-1, a four-sided perforated textured sheet 1-2, or a multi-sided perforated textured sheet 1-3; the back cavity reflection is designed to improve and eliminate these adverse effects.

[0036] The reflector device of this utility model GNSS antenna is used in conjunction with a small multi-band GNSS high-precision navigation antenna.

[0037] A small multi-band GNSS high-precision navigation antenna includes a reflector device for the GNSS antenna, and also includes a housing 6, a base 7, a connector 5, a shielding cover 8, and self-tapping screws.

[0038] The GNSS antenna's reflector device is equipped with a shielding cover 8 at its lower part, which is used to shield electromagnetic interference, prevent interference signals, protect components, and effectively improve circuit performance, thereby ensuring the reliability and performance of the entire circuit system.

[0039] The reflector device of the GNSS antenna, together with the shield 8, is mounted on the base 7 by self-tapping screws. The outer shell 6 is fitted over the reflector device of the GNSS antenna and fixed to the upper part of the base 7.

[0040] The reflector device of this utility model GNSS antenna is used in conjunction with a small multi-band GNSS high-precision navigation antenna. When in use, the small multi-band GNSS high-precision navigation antenna is installed on the top crossbeam, inside the spoiler, or in other locations inside the vehicle. The GNSS high-precision navigation antenna receives signals transmitted from space satellites and outputs them to the vehicle-mounted T-BOX via output line 4 and connector 5, thereby realizing the vehicle-mounted GNSS navigation function.

Claims

1. A reflector device for a GNSS antenna, characterized in that, It includes a reflector cavity, a PCBA circuit board, a GNSS dielectric antenna, and an output line; the reflector cavity is mounted on the PCBA circuit board, the GNSS dielectric antenna is mounted on the PCBA circuit board in the middle of the reflector cavity, the signal output terminal of the GNSS dielectric antenna is connected to the PCBA circuit board, and is connected to a connector through the output line.

2. The reflector device for a GNSS antenna according to claim 1, characterized in that, The aforementioned reflective cavity consists of four single-piece bodies erected on a PCBA circuit board to form a quadrilateral cavity.

3. The reflector device for a GNSS antenna according to claim 1, characterized in that, The aforementioned reflective cavity is a hollow, centrally symmetrical sheet with a perforated pattern on all four sides.

4. The reflector device for a GNSS antenna according to claim 1, characterized in that, The aforementioned reflective cavity is a hollow, centrally symmetrical, multi-faceted perforated sheet.

5. The reflector device for a GNSS antenna according to claim 1, characterized in that, The reflective cavity is a hollow, concave-convex integral sheet with a centrally symmetrical, multi-faceted hollow texture.

6. The reflector device for a GNSS antenna according to claim 1, characterized in that, The reflective cavity is made of metal, which completely isolates the antenna from the influence of other surrounding parts at the antenna mounting location.

7. A small, multi-band GNSS high-precision navigation antenna, characterized in that, The reflector device for a GNSS antenna as described in any one of claims 1-6 further includes a housing, a base, a connector, a shield, and self-tapping screws.

8. The small multi-band GNSS high-precision navigation antenna according to claim 7, characterized in that, The reflector of the GNSS antenna is equipped with a shielding cover at the bottom to shield against electromagnetic interference.

9. The small multi-band GNSS high-precision navigation antenna according to claim 7, characterized in that, The reflector assembly of the GNSS antenna, along with the shielding cover, is mounted on the base using self-tapping screws. The outer casing is fitted over the reflector assembly of the GNSS antenna and fixed to the upper part of the base.

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