GNSS antenna device and electronic equipment

Abstract

The utility model discloses a GNSS (Global Navigation Satellite System) antenna device and electronic equipment. The GNSS antenna device comprises an antenna bottom plate, a plurality of first components, a plurality of second components, an antenna bracket and a radio frequency signal line, the antenna bottom plate is provided with a first surface and a second surface which are opposite in the thickness direction; the first component is provided with a first feed branch knot, a second feed branch knot, a first grounding branch knot and a second grounding branch knot; the second component is provided with a third grounding branch knot and a fourth grounding branch knot; the antenna support is provided with a third face and a fourth face which are opposite in the thickness direction, the antenna support is arranged on the first face of the antenna bottom plate, the third face of the antenna support and the first face of the antenna bottom plate are oppositely arranged, and the first components and the second components are arranged on the fourth face in an array with the antenna support as the center; the radio frequency signal line has a core wire and a shield layer. The GNSS antenna device is light in weight, small in size and flexible in structure installation, can realize GNSS satellite high-precision positioning, and provides high-precision positioning for automatic driving markets, geographic mapping, agricultural precise fertilization and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of positioning antennas, and in particular to a GNSS antenna device and electronic equipment. Background Art

[0002] In the global satellite navigation market, terminal equipment used in road traffic, drones and other fields is the fastest growing market segment in the next ten years. Among them, intelligent and unmanned vehicles are the main development direction of future road vehicles. Cars with autonomous driving capabilities must be equipped with GNSS high-precision antennas. Therefore, the autonomous driving market has a huge demand for GNSS antennas. Secondly, with the continuous development of my country's agricultural modernization process, the use of drones equipped with high-precision positioning antennas, such as plant protection drones, will continue to grow.

[0003] Although GNSS high-precision antennas have been developed for many years and various technologies have become relatively mature, there are still many areas that need to be broken through: ① Miniaturization: The miniaturization of electronic equipment is an eternal development trend, especially in applications such as drones and handheld devices, where the demand for small-size antennas is more urgent. However, the antenna performance will decrease after miniaturization. How to reduce the antenna size while ensuring comprehensive performance is an important research direction for high-precision antennas; ② Anti-multipath technology: GNSS antenna anti-multipath technology mainly includes choke technology, artificial electromagnetic material technology, etc., but they all have disadvantages such as large size, narrow bandwidth, and high cost, and cannot be universally designed. Therefore, it is necessary to study anti-multipath technology with miniaturization and broadband characteristics to meet various application requirements; ③ Multi-band: With the increase in satellite navigation system signal bands, multi-band antennas have begun to be used in high-precision positioning. How to enable the antenna to receive signals from multiple frequency bands at the same time and improve positioning accuracy and reliability has become an urgent problem that needs to be solved in the industry.

[0004] Currently, if GNSS positioning antennas are to achieve multi-band high-precision positioning, the only way is to increase the size of the antenna. However, this is not conducive to the flexibility of antenna equipment installation. The commonly used GNSS antenna materials in existing technologies are mainly ceramics (mature technology, heavy weight), high-frequency dielectric boards (high price, low board loss), polymer plastics (not resistant to high temperatures, low board loss), PCBs (light weight, high degree of customization, board loss increases with increasing frequency, high temperature resistance), metal sheet metal (impact resistance, high temperature resistance, low loss), etc. Therefore, how to achieve the characteristics of GNSS full frequency band, light weight, impact resistance, high temperature resistance, and small size is relatively difficult in practice. Utility Model Content

[0005] The purpose of the utility model is to provide a GNSS antenna device and electronic equipment with light weight, small size, flexible structure and installation, which can realize high-precision positioning of GNSS satellites and provide high-precision positioning for the autonomous driving market, geographic surveying and mapping, agricultural precision fertilization, etc.

[0006] The purpose of this utility model is achieved by the following technical solutions:

[0007] The utility model provides a GNSS antenna device, comprising:

[0008] An antenna base plate, the antenna base plate having a first surface and a second surface opposite to each other in a thickness direction;

[0009] A plurality of first components, each of the first components having a first feeding branch, a second feeding branch, a first grounding branch, and a second grounding branch;

[0010] a plurality of second components, each of the second components having a third grounding branch and a fourth grounding branch;

[0011] An antenna bracket, the antenna bracket having a third surface and a fourth surface opposing each other in a thickness direction, the antenna bracket being disposed on the first surface of the antenna base plate, the third surface of the antenna bracket being disposed opposite the first surface of the antenna base plate, and the first component and the second component being arranged in an array on the fourth surface with the center of the antenna bracket;

[0012] A radio frequency signal line, the radio frequency signal line comprising a core line and a shielding layer;

[0013] The first components and the second components are equal in number and arranged in a one-to-one correspondence, and the power feeding of each second component is parasitically generated by the corresponding first component.

[0014] Preferably, the first component and the second component are both metal sheet metal parts; and / or,

[0015] The metal sheet metal part is metal tinplate, and the thickness of the metal tinplate is 0.4-0.6 mm.

[0016] Preferably, one end of the first feeding branch is connected to one end of the first component, and the other end of the first feeding branch is connected to the second feeding branch; and / or,

[0017] One end of the first grounding branch is connected to the first feeding branch close to one end of the first component, and the other end of the first grounding branch is connected to the second grounding branch. The first grounding branch and the second grounding branch form an inverted L-shaped structure as a whole.

[0018] Preferably, the antenna bracket is a plastic part, a plurality of isolating parts are provided on the third surface of the antenna bracket, and the isolating parts are provided in the same number as the first part and / or the second part, and the antenna bracket is connected to the antenna base plate through the isolating parts.

[0019] Preferably, the first component and the second component are arranged in a circumferential array on the antenna support; and / or,

[0020] The antenna bracket is a square ring plate with notches at all corners. There are four of each of the first and second components. The four first and second components are arranged in a circular array with the geometric center point of the square ring plate of the antenna bracket as the center, and the four first and second components are respectively parallel to the four sides of the square ring plate of the antenna bracket.

[0021] Preferably, the isolation members are respectively arranged at the notches near the corners of the square ring plate of the antenna bracket, and the antenna bracket is respectively provided with a first mounting channel and a second mounting channel on both sides of the isolation member, and the first mounting channel and the second mounting channel are respectively provided through the thickness direction of the antenna bracket;

[0022] Among them, the first feeding branch, the second feeding branch, the first grounding branch and the second grounding branch pass through the first mounting channel through the antenna bracket and fit with one side wall of the isolation member, and the third grounding branch and the fourth grounding branch pass through the second mounting channel through the antenna bracket and fit with the other side wall of the isolation member.

[0023] Preferably, a plurality of positioning posts are provided on the fourth surface of the antenna bracket, a first positioning hole is provided in the first component, and a second positioning hole is provided in the second component, wherein the first positioning hole installs the first component on the antenna bracket through part of the positioning posts, and the second positioning hole installs the second component on the antenna bracket through the remaining part of the positioning posts.

[0024] Preferably, the antenna base plate is a square plate, and is provided with a first through-hole pad having the same number as the first component and / or the second component, a second through-hole pad and a third through-hole pad are respectively provided on both sides of the first through-hole pad, and the antenna base plate is further provided with a fourth through-hole pad, and the fourth through-hole pad is used for externally connecting a radio frequency signal line;

[0025] Wherein, the first through-hole pad, the second through-hole pad, the third through-hole pad and the fourth through-hole pad are arranged through the thickness direction of the antenna base plate; and / or,

[0026] The first through-hole pads are arranged in a circular array with the geometric center point of the square antenna base plate as the center, and each of the first through-hole pads is close to a corner of the square antenna base plate; and / or,

[0027] The first through-hole pad is connected to the second feeding branch, the second through-hole pad is connected to the second grounding branch, and the third through-hole pad is connected to the fourth grounding branch.

[0028] Preferably, a one-to-four power divider is provided on the second surface of the antenna base plate, the power divider having one input terminal and four output terminals, the input terminal of the power divider is connected to the fourth through-hole pad, a ground pad located on the antenna base plate is provided on one side of the fourth through-hole pad for externally connecting a shielding layer of the radio frequency signal line, and the output terminals of the power divider are respectively connected to a second through-hole pad; and / or,

[0029] A connecting column is provided at the bottom of the isolating member, and a connecting channel is provided on one side of the first through-hole pad, which is arranged to penetrate along the thickness direction of the antenna base plate and is used to accommodate the connecting column to install the isolating member on the antenna base plate.

[0030] The utility model also provides an electronic device, comprising the above-mentioned GNSS antenna device.

[0031] Compared with the prior art, the beneficial effects of the present invention include at least:

[0032] This GNSS antenna device is a combination of metal sheet metal and plastic parts. It is lighter than ceramic antennas, cheaper than high-frequency dielectric boards, more impact-resistant than PCBs, and has strong environmental adaptability. The overall profile of the antenna is low and miniaturized, making the antenna structure simple to manufacture, light in weight, small in size, and flexible in installation. The antenna impedance can be adjusted by changing the width of the second grounding branch to ensure good impedance and antenna bandwidth. While the antenna is small in size, it can cover the entire GNSS frequency band and receive signals from multiple satellite navigation systems such as GPS, GLONASS, Galileo, BeiDou, etc., ensuring coverage of full-band satellite signals to improve positioning accuracy and reliability. It can achieve high-precision positioning of GNSS satellites and provide high-precision positioning for the autonomous driving market, geographic surveying and mapping, and agricultural precision fertilization. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 1 is a schematic structural diagram of a GNSS antenna device according to an embodiment of the present invention;

[0034] Figure 2 This utility model Figure 1 Schematic diagram of the structure after the antenna base plate is disassembled;

[0035] Figure 3 This utility model Figure 2 Schematic diagram of the planar structure from the fourth side;

[0036] Figure 4 It is a structural diagram of the first component of an embodiment of the utility model;

[0037] Figure 5 It is a structural diagram of the second component of an embodiment of the utility model;

[0038] Figure 6 This is a schematic structural diagram of the antenna bracket of the utility model;

[0039] Figure 7 This is a schematic diagram of the planar structure of the antenna base plate of the utility model from the second side direction;

[0040] Figure 8 It is a schematic diagram of the planar structure of the antenna base plate of the utility model from the first side direction;

[0041] Figure 9 This is a schematic diagram of the change of the voltage standing wave ratio within the operating frequency band of the GNSS antenna device of the present invention;

[0042] Figure 10 This is a schematic diagram of the gain variation of the GNSS antenna device of the present invention within the full frequency band;

[0043] Figure 11 This is a schematic diagram of the change in efficiency of the GNSS antenna device of the present invention within the full frequency band;

[0044] Figure 12 This is a schematic diagram of the change in the axial ratio of the GNSS antenna device of the present invention within the full frequency band.

[0045] In the picture:

[0046] 1. Antenna bracket; 101. Positioning column; 102. Second installation channel; 103. First installation channel; 104. Isolation piece; 1041. Connecting column;

[0047] 2. Second component; 201. Third grounding branch; 202. Fourth grounding branch; 203. Second positioning hole;

[0048] 3. First component; 301. First feeding branch; 302. First grounding branch; 303. Second grounding branch; 304. Second feeding branch; 305. First positioning hole;

[0049] 4. Antenna base plate; 401. First through-hole pad; 402. Second through-hole pad; 403. Third through-hole pad; 404. Power divider; 405. Fourth through-hole pad; 406. Ground pad; 407. Connection channel. DETAILED DESCRIPTION

[0050] Example embodiments will now be described more fully with reference to the accompanying drawings. However, the example embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided to make this disclosure more comprehensive and complete and to fully convey the concepts of the example embodiments to those skilled in the art. Identical reference numerals in the figures denote identical or similar structures, and thus repeated descriptions thereof will be omitted.

[0051] The words expressing positions and directions described in this utility model are all explained with reference to the accompanying drawings as examples, but they can be changed as needed, and all such changes are included in the protection scope of this utility model.

[0052] Reference Figures 1 to 11 The present invention provides a GNSS antenna device, comprising: an antenna base plate 4, a plurality of first components 3, a plurality of second components 2, an antenna bracket 1, and a radio frequency signal line. Preferably, both the first components 3 and the second components 2 are metal sheet metals. In a specific application, the metal sheet metals can be tinplate with a thickness of 0.4-0.6 mm, preferably 0.5 mm.

[0053] Specifically, the antenna base plate 4 has a first surface and a second surface that are opposite to each other along the thickness direction. Preferably, the antenna base plate 4 can be made of FR-4 epoxy glass cloth laminate, with a thickness of 0.5-1.5 mm, preferably 1 mm. Furthermore, the antenna base plate 4 can be a square plate with a side length of 65 mm. Of course, the side length of the antenna base plate 4 can be adjusted in other situations and is not a limitation here.

[0054] The first component 3 has a first feeding branch 301, a second feeding branch 304, a first grounding branch 302 and a second grounding branch 303; as a preferred embodiment, one end of the first feeding branch 301 is connected to one end of the first component 3, and the other end of the first feeding branch 301 is connected to the second feeding branch 304; one end of the first grounding branch 302 is connected to the first feeding branch 301 close to one end of the first component 3, and the other end of the first grounding branch 302 is connected to the second grounding branch 303, and the first grounding branch 302 and the second grounding branch 303 form an inverted L-shaped structure as a whole.

[0055] It should be noted that the first feeding branch 301 , the second feeding branch 304 , the first grounding branch 302 , the second grounding branch 303 and the first component 3 can be made by connecting methods in the prior art including but not limited to welding or integral molding.

[0056] The second component 2 has a third grounding branch 201 and a fourth grounding branch 202 ; preferably, one end of the third grounding branch 201 is connected to one end of the second component 2 , and the other end of the third grounding branch 201 is connected to the fourth grounding branch 202 .

[0057] It should be noted that the third grounding branch 201 and the fourth grounding branch 202 and the second component 2 can also be made by connecting methods in the prior art including but not limited to welding or integral molding.

[0058] The antenna bracket 1 has a third surface and a fourth surface opposite to each other in the thickness direction. The antenna bracket 1 is arranged on the first surface of the antenna base plate 4. The third surface of the antenna bracket 1 is arranged opposite to the first surface of the antenna base plate 4. The first component 3 and the second component 2 are arranged on the fourth surface of the antenna bracket 1; as a preferred embodiment, the antenna bracket 1 is a plastic part, and a plurality of isolating members 104 are provided on the third surface of the antenna bracket 1. The isolating members 104 can preferably be plate-shaped, and the isolating members 104 are provided in the same number as the first component 3 and / or the second component 2. The antenna bracket 1 is connected to the antenna base plate 4 through the isolating members 104; wherein, the overall height of the antenna bracket 1 after being connected and assembled with the antenna base plate 4 can be 13 mm. Of course, in other cases, the overall height of the antenna bracket 1 after being connected to the antenna base plate 4 can also be other sizes, and this is not the only limitation.

[0059] The RF signal line (not shown) has a core wire and a shielding layer; wherein the fourth through-hole pad 405 is welded and connected to the core wire of the RF signal line, and the ground pad 406 is welded and connected to the shielding layer of the RF signal line. The RF output of the RF signal line is the GNSS passive antenna signal.

[0060] The first components 3 and the second components 2 are equal in number and arranged in a one-to-one correspondence, and the power feeding of each second component 2 is parasitically generated by the corresponding first component 3 .

[0061] Therefore, the first component 3, the second component 2 and the antenna bracket 1 of the GNSS antenna device are in the form of a combination of metal sheet metal and plastic parts. They are lighter than ceramic antennas, cheaper than high-frequency dielectric boards, more impact-resistant than PCBs, and have strong environmental adaptability. The overall size of the antenna can be 65x65x13 (mm), with a low profile and miniaturization. The antenna structure is simple to manufacture, light in weight, small in size, and flexible in installation. It can cover the entire GNSS frequency band and can receive signals from multiple satellite navigation systems such as GPS, GLONASS, Galileo, BeiDou, etc., to improve positioning accuracy and reliability.

[0062] In a specific embodiment, referring to Figures 1 to 3 The first component 3 and the second component 2 are arranged in a circular array on the antenna bracket 1; as a preferred embodiment, the antenna bracket 1 is a square ring plate with notches at the corners, and four first components 3 and second components 2 are provided. The four first components 3 and second components 2 are arranged in a circular array with the geometric center point of the square ring plate of the antenna bracket 1 as the center of the circle, and the four first components 3 and second components 2 are respectively parallel to the four sides of the square ring plate of the antenna bracket 1.

[0063] In this embodiment, referring to Figure 2 and Figure 6The isolators 104 are respectively arranged at the notches near the corners of the square ring plate of the antenna bracket 1. The antenna bracket 1 is respectively provided with a first mounting channel 103 and a second mounting channel 102 on both sides of the isolator 104, and the first mounting channel 103 and the second mounting channel 102 are arranged to pass through along the thickness direction of the antenna bracket 1; wherein, the first feeding branch 301, the second feeding branch 304, the first grounding branch 302 and the second grounding branch 303 pass through the antenna bracket 1 through the first mounting channel 103 and are adhered to one side wall of the isolator 104, and the third grounding branch 201 and the fourth grounding branch 202 pass through the antenna bracket 1 through the second mounting channel 102 and are adhered to the other side wall of the isolator 104.

[0064] It should be noted that a certain gap is left between the feeding branch and grounding branch of the first component 3 and the grounding branch of the second component 2. The gap can be 3.5mm, that is, the distance between the feeding branch and grounding branch of the first component 3 and the grounding branch of the second component 2 can be 3.5mm. In this way, high-frequency signals can be parasitized, and the smaller the distance, the higher the parasitic efficiency. The distance (gap) between the first component 3 and the second component 2 can be adjusted according to the production standard to parasitize high-frequency signals corresponding to the standard. However, the distance should not be too close. If the distance is too close, the first component 3 and the second component 2 will couple with each other, narrowing the gain bandwidth of the low-frequency band and the high-frequency band. Under the premise of small size, a compromise must be considered to ensure the requirement of covering full-band satellite signals. The grounding branches of the first component 3 are connected to the ground. The impedance can be adjusted by changing the width of the first grounding branch 302. A good antenna impedance can ensure the antenna bandwidth.

[0065] In a specific application, refer to Figures 4 to 6 The fourth surface of the antenna bracket 1 is provided with several positioning posts 101, the first component 3 is provided with a first positioning hole 305, and the second component 2 is provided with a second positioning hole 203, wherein the first positioning hole 305 installs the first component 3 on the antenna bracket 1 through part of the positioning posts 101 to fix the first component 3 on the antenna bracket 1, and the second positioning hole 203 installs the second component 2 on the antenna bracket 1 through the remaining positioning posts 101 to fix the second component 2 on the antenna bracket 1.

[0066] In this way, the GNSS positioning component is mainly composed of four groups of first components 3 and second components 2 made of metal sheet metal parts, and is arranged in a central circular array with an antenna bracket 1 made of plastic parts. The feeding branch and the grounding branch of the first component 3 are set on the antenna bracket 1 through the first installation channel 103. By setting the length of the first component 3, the low frequency band L2+L5: 1160~1280MHz is taken into account, and the actual frequency is achieved through the length of the first component 3. The grounding branch of the second component 2 is set on the antenna bracket 1 through the second installation channel 102. By setting the length of the second component 2, the high frequency band L1+L: 1520~1630MHz is taken into account, and the actual frequency is achieved through the length of the second component 2.

[0067] In a specific embodiment, referring to Figure 7 and Figure 8 The antenna base plate 4 is provided with a first through-hole pad 401 having the same number as the first component 3 and / or the second component 2, so that each group of the first component 3 and the second component 2 corresponds to a first through-hole pad 401, and a second through-hole pad 402 and a third through-hole pad 403 are respectively provided on both sides of the first through-hole pad 401, that is, the second through-hole pad 402 and the third through-hole pad 403 are provided with the same number as the first through-hole pad 401, and the antenna base plate 4 is further provided with a fourth through-hole pad 405, which is used for externally connecting a radio frequency signal line (not shown); wherein the first through-hole pad 401, the second through-hole pad 402, the third through-hole pad 403 and the fourth through-hole pad 405 are arranged through the thickness direction of the antenna base plate 4; as a preferred embodiment, the first through-hole pad 401 is arranged in a square shape on the antenna base plate 4 The geometric center point of the circle is set as the center of the circle, and each first through-hole pad 401 is close to a corner of the square of the antenna base plate 4; specifically, there are four first through-hole pads 401, and the four first through-hole pads 401 are set in the above-mentioned manner, so that each first through-hole pad 401 and the second through-hole pads 402 and the third through-hole pads 403 on both sides correspond to a group of first components 3 and second components 2 respectively, so that the first through-hole pad 401 can be connected to the second feeding branch node 304, the second through-hole pad 402 can be connected to the second grounding branch node 303, and the third through-hole pad 403 can be connected to the fourth grounding branch node 202, so that the second feeding branch node 304, the second grounding branch node 303 and the fourth grounding branch node 202 can be connected to the electrical structure of the second surface of the antenna base plate 4.

[0068] In this embodiment, referring to Figure 7A one-to-four power divider 404 is provided on the second surface of the antenna base plate 4. The power divider 404 has an input terminal and four output terminals. The input terminal of the power divider 404 is connected to the fourth through-hole pad 405. A ground pad 406 located on the antenna base plate 4 is provided on one side of the fourth through-hole pad 405 for connecting the shielding layer of the external RF signal line. The output terminals of the power divider 404 are respectively connected to a first through-hole pad 401. In this way, the second feeding branches 304 of the four first components 3 are connected to the four output terminals of the power divider 404.

[0069] It should be noted that the power divider 404 can be formed by three couplers cascaded through microstrip lines. The circular polarization axial ratio bandwidth and gain bandwidth can be widened by the four-feed circular polarization method, and the feeding structure is simple and easy to implement.

[0070] In a specific application, a connecting column 1041 can be provided at the bottom of the isolation member 104, and a connecting channel 407 is provided on one side of the first through-hole pad 401, which is arranged to penetrate along the thickness direction of the antenna base plate 4, for accommodating the connecting column 1041 to install the isolation member 104 on the antenna base plate 4, so that the antenna bracket 1 can be positioned and installed on the antenna base plate 4, and subsequently the second feed branch 304, the second grounding branch 303 and the fourth grounding branch 202 can be welded in sequence on the first through-hole pad 401, the second through-hole pad 402 and the third through-hole pad 403 by welding.

[0071] The operating frequency bands of the GNSS antenna device of the present application include: 1160-1280 MHz and 1520-1620 MHz.

[0072] Return loss is the ratio of the incident wave power to the reflected wave power at the transmission line port. Return loss is a parameter that indicates the signal reflection performance. Figure 9 , through actual measurements, it is shown that when the operating frequency band is 1160~1280MHz / 1520~1620MHz, the return loss (Return Loss) of the GNSS antenna device is less than -15dB.

[0073] Gain is an indicator that measures the antenna's ability to amplify signals. The higher the gain, the stronger the antenna's ability to receive or transmit signals. Figure 10 ,actual measurements show that when the operating frequency band is 1160-1280MHz, the maximum gain of the GNSS antenna device is greater than 2.5dBi; ,when the operating frequency band is 1520-1620MHz, the maximum gain of the GNSS antenna is greater than 2.5dBi.

[0074] Efficiency is the ability of an antenna to convert electrical energy into radiated energy. Figure 11,The actual measurements show that within the working frequency band, the GNSS antenna device has an ,effective conversion rate of converting electrical energy into ,radiation energy greater than 50%, i.e., at least 50% of the electrical energy is ,effectively converted into radiation energy.

[0075] The axial ratio is an indicator that measures the degree of asymmetry of the antenna radiation pattern in the direction of maximum radiation. Figure 12 ,The actual measurement shows that within the working frequency band, the ,axial ratio of the GNSS antenna device is less than 1.0dB, indicating that ,the radiation pattern of the antenna is relatively symmetrical and ,has good performance.

[0076] Therefore, the GNSS antenna device of the present invention has good gain performance and axial ratio performance. After adding a low-noise RF circuit to its rear end, it can meet the requirements of high-precision positioning. It can be seen that the GNSS antenna device is suitable for GNSS applications that require high-precision positioning, such as the autonomous driving market, geographic surveying and mapping, and agricultural precision fertilization.

[0077] The utility model also provides an electronic device, comprising the above-mentioned GNSS antenna device.

[0078] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limiting the present invention. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the utility model without departing from the principles and purpose of the utility model. All of these changes should fall within the scope of protection of the claims of the present invention.

Claims

1. A GNSS antenna device, characterized in that: include: An antenna base plate (4), the antenna base plate (4) having a first surface and a second surface that are opposite to each other in a thickness direction; A plurality of first components (3), each of the first components (3) having a first feeding branch (301), a second feeding branch (304), a first grounding branch (302) and a second grounding branch (303); A plurality of second components (2), each of the second components (2) having a third grounding branch (201) and a fourth grounding branch (202); An antenna bracket (1), the antenna bracket (1) having a third surface and a fourth surface opposite to each other in a thickness direction, the antenna bracket (1) being arranged on the first surface of the antenna base plate (4), the third surface of the antenna bracket (1) being arranged opposite to the first surface of the antenna base plate (4), and the first component (3) and the second component (2) being arranged in an array on the fourth surface with the center of the antenna bracket (1); A radio frequency signal line, the radio frequency signal line comprising a core line and a shielding layer; The first components (3) and the second components (2) are equal in number and arranged in a one-to-one correspondence, and the power feeding of each second component (2) is parasitically generated by the corresponding first component (3).

2. The GNSS antenna device according to claim 1, wherein: The first component (3) and the second component (2) are both metal sheet metal parts; and / or, The metal sheet metal part is metal tinplate, and the thickness of the metal tinplate is 0.4-0.6 mm.

3. The GNSS antenna device according to claim 1, wherein: One end of the first feeding branch (301) is connected to one end of the first component (3), and the other end of the first feeding branch (301) is connected to the second feeding branch (304); and / or, One end of the first grounding branch (302) is connected to a first feeding branch (301) close to one end of the first component (3), and the other end of the first grounding branch (302) is connected to the second grounding branch (303). The first grounding branch (302) and the second grounding branch (303) are integrally formed into an inverted L-shaped structure.

4. The GNSS antenna device according to claim 1, wherein: The antenna bracket (1) is a plastic part. A plurality of isolating parts (104) are provided on the third surface of the antenna bracket (1). The isolating parts (104) are provided in the same number as the first part (3) and / or the second part (2). The antenna bracket (1) is connected to the antenna base plate (4) via the isolating parts (104).

5. The GNSS antenna device according to claim 4, characterized in that: The first component (3) and the second component (2) are circumferentially arrayed on the antenna support (1); and / or, The antenna bracket (1) is a square ring plate with notches at each corner, and four of the first components (3) and the second components (2) are provided. The four first components (3) and the second components (2) are arranged in a circular array with the geometric center point of the square ring plate of the antenna bracket (1) as the center, and the four first components (3) and the second components (2) are respectively parallel to the four sides of the square ring plate of the antenna bracket (1).

6. The GNSS antenna device according to claim 5, characterized in that: The isolating members (104) are respectively arranged at the notches near the corners of the square ring plate of the antenna bracket (1); the antenna bracket (1) is respectively provided with a first mounting channel (103) and a second mounting channel (102) on both sides of the isolating member (104); and the first mounting channel (103) and the second mounting channel (102) are arranged to penetrate along the thickness direction of the antenna bracket (1); The first feeding branch (301), the second feeding branch (304), the first grounding branch (302) and the second grounding branch (303) pass through the first installation channel (103) to penetrate the antenna bracket (1) and are in contact with one side wall of the isolation member (104); and the third grounding branch (201) and the fourth grounding branch (202) pass through the second installation channel (102) to penetrate the antenna bracket (1) and are in contact with the other side wall of the isolation member (104).

7. The GNSS antenna device according to claim 5, characterized in that: The fourth surface of the antenna bracket (1) is provided with a plurality of positioning posts (101), the first component (3) is provided with a first positioning hole (305), and the second component (2) is provided with a second positioning hole (203), wherein the first positioning hole (305) is used to mount the first component (3) on the antenna bracket (1) through a portion of the positioning posts (101), and the second positioning hole (203) is used to mount the second component (2) on the antenna bracket (1) through the remaining portion of the positioning posts (101).

8. The GNSS antenna device according to claim 5, wherein: The antenna base plate (4) is a square plate, and is provided with a number of first through-hole pads (401) equal to the number of the first component (3) and / or the second component (2), and a second through-hole pad (402) and a third through-hole pad (403) are provided on both sides of the first through-hole pad (401), respectively. The antenna base plate (4) is also provided with a fourth through-hole pad (405), and the fourth through-hole pad (405) is used for connecting a radio frequency signal line; wherein the first through-hole pad (401), the second through-hole pad (402), the third through-hole pad (403) and the fourth through-hole pad (405) are arranged to penetrate along the thickness direction of the antenna base plate (4); and / or, The first through-hole pads (401) are arranged in a circular array with the geometric center point of the square of the antenna base plate (4) as the center, and each of the first through-hole pads (401) is close to a corner of the square of the antenna base plate (4); and / or, The first through-hole pad (401) is connected to the second feeding branch (304), the second through-hole pad (402) is connected to the second grounding branch (303), and the third through-hole pad (403) is connected to the fourth grounding branch (202).

9. The GNSS antenna device according to claim 8, characterized in that: A one-to-four power divider (404) is provided on the second surface of the antenna base plate (4), the power divider (404) having one input end and four output ends, the input end of the power divider (404) being connected to a fourth through-hole pad (405), a ground pad (406) located on the antenna base plate (4) being provided on one side of the fourth through-hole pad (405) for connecting to a shielding layer of a radio frequency signal line, and the output ends of the power divider (404) being respectively connected to a second through-hole pad (402); and / or, A connecting column (1041) is provided at the bottom of the isolating member (104), and a connecting channel (407) is provided on one side of the first through-hole pad (401) and is arranged to penetrate along the thickness direction of the antenna base plate (4) for accommodating the connecting column (1041) so as to mount the isolating member (104) on the antenna base plate (4).

10. An electronic device, characterized in that: The invention comprises the GNSS antenna device according to any one of claims 1 to 9.

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