Multi-path GNSS built-in positioning antenna

Abstract

The utility model discloses a kind of multi-combination GNSS built-in positioning antenna, specifically related to positioning antenna technical field, including the PCB board of upper setting with welding pin, and PCB board is fixedly installed with support guide frame, ceramic body antenna block is movably arranged between support guide frame, and the size of ceramic body antenna block and support guide frame inboard size corresponds, side opening is set up on support guide frame.The GNSS built-in positioning antenna provided by the utility model, by placing ceramic body antenna block in the support guide frame with its size, at this time under the guidance of support guide frame so that the pin on ceramic body antenna block can accurately correspond with the welding pin on PCB board, to reduce the problem such as pin misalignment and secondary adjustment caused by solder paste being squeezed out when artificial alignment, and support guide frame can limit ceramic body antenna block, to improve the stability when subsequent reflow soldering, utilize side opening to facilitate observation welding pin.

Description

Technical Field

[0001] This utility model relates to the field of positioning antenna technology, and more specifically to a multi-channel GNSS built-in positioning antenna. Background Technology

[0002] A complete GNSS built-in positioning antenna is a sophisticated component consisting of two main parts working together: a passive radiating element and an active amplification circuit. Specifically, it captures and receives microwave signals from satellites. Since satellite signals are extremely weak after traveling tens of thousands of kilometers to the ground, the electrical signals generated by the passive element need to be processed immediately and converted into weak electrical signals.

[0003] According to patent publication number CN220553600U, published on March 1, 2024, a GNSS antenna is disclosed, including a radiating structure and a feeding structure. The radiating structure includes a first dielectric substrate, a second dielectric substrate, and a third dielectric substrate stacked from bottom to top. The upper surface of the first dielectric substrate has a first metal layer, the upper surface of the second dielectric substrate has a second metal layer, and the upper surface of the third dielectric substrate has a third metal layer. The feeding structure penetrates the radiating structure and is connected to a feeding network. The third dielectric substrate is a ceramic substrate, and the first metal layer is a copper layer printed on the ceramic substrate.

[0004] In the prior art, including the aforementioned patent, the GNSS antenna can simultaneously cover a first preset frequency band, a second preset frequency band, and a third preset frequency band without increasing its size. The production of such GNSS antennas typically involves multi-layered splicing and soldering steps. Especially for the parts in contact with the circuit board, during reflow soldering, the pins connecting the ceramic antenna to the circuit board are covered by the ceramic antenna body. Solder paste is applied to the pins on the circuit board before reflow soldering, and then the ceramic antenna is manually aligned and accurately placed onto the pins. However, due to a lack of guidance during placement, misalignment sometimes occurs. Furthermore, if there is no limiting after placement, a certain degree of misalignment will occur between the ceramic antenna and the circuit board. Utility Model Content

[0005] The purpose of this invention is to provide a multi-path GNSS built-in positioning antenna to solve the above-mentioned technical problems.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a multi-channel GNSS built-in positioning antenna, including a PCB board with solder pins, and a support guide frame fixedly mounted on the PCB board. A ceramic antenna block is movably arranged between the support guide frames, and the size of the ceramic antenna block corresponds to the size of the inner side of the support guide frame. A side opening is provided on the support guide frame.

[0007] Preferably, a support elastic plate is fixedly installed inside the side opening on one side of the soldering pin on the PCB board, and the support elastic plate extends to the inside of the support guide frame.

[0008] Preferably, a shielding cover and an antenna are fixedly installed on the bottom of the PCB board.

[0009] Preferably, the support guide frame and the ceramic antenna block are covered with a protective cover.

[0010] Preferably, the protective cover has slots at its four corners, and the side plates at the four corners of the support guide are movably disposed within the slots.

[0011] Preferably, the symmetrically arranged ventilation slots on the protective cover correspond to the side openings.

[0012] Preferably, the bent portion at the end of the supporting elastic plate is movably disposed within the ventilation groove.

[0013] Preferably, the supporting elastic plate is an elastic plastic plate.

[0014] Preferably, the support guide frame is a rigid plastic frame.

[0015] In the above technical solution, the multi-channel GNSS built-in positioning antenna provided by this utility model has the following beneficial effects: By setting a mark corresponding to the support guide frame on the PCB board, such as by spraying paint, and then accurately fixing the support guide frame to the mark with glue, the ceramic antenna block is placed in the support guide frame that matches its size. At this time, under the guidance of the support guide frame, the pins on the ceramic antenna block can accurately correspond to the soldering pins on the PCB board, thereby reducing the problems of pin misalignment and solder paste squeezing out caused by secondary adjustment during manual alignment. In addition, the support guide frame can limit the position of the ceramic antenna block, thereby improving the stability during subsequent reflow soldering. The side opening on the support guide frame facilitates subsequent observation of whether there are problems such as insufficient solder or solder paste connection between the pins. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0017] Figure 1 This is a schematic diagram of the exploded structure provided for an embodiment of the present utility model;

[0018] Figure 2 A schematic diagram of the overall structure provided for an embodiment of this utility model;

[0019] Figure 3 This is a schematic cross-sectional view of a ceramic antenna block provided in an embodiment of the present invention.

[0020] Figure 4 This is a schematic cross-sectional view of the protective cover provided in an embodiment of the present utility model.

[0021] Explanation of reference numerals in the attached figures:

[0022] 1. PCB board; 2. Support guide frame; 3. Ceramic antenna block; 4. Protective cover; 5. Shielding cover; 11. Soldering pins; 12. Antenna mounting; 21. Side opening; 22. Side plate; 23. Support elastic plate; 24. Bending part; 41. Slot; 42. Ventilation slot. Detailed Implementation

[0023] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0024] Please see Figure 1-4 The present invention provides a technical solution, including the following embodiments:

[0025] Example 1

[0026] like Figure 1 As shown in this embodiment, a basic installation structure and guidance mechanism for a multi-path GNSS built-in positioning antenna are provided.

[0027] Specifically, the antenna includes a PCB board 1, on which mounting position marks corresponding to the support guide 2 are pre-marked by spray painting or laser marking. The support guide 2 is accurately fixed to these marks using glue or adhesive, ensuring alignment with the solder pins 11 on the PCB board 1. The inner size of the support guide 2 matches the ceramic antenna block 3, which is placed inside the support guide 2 manually or by a robotic arm. During placement, the sidewalls of the support guide 2 provide physical guidance, automatically aligning the pins on the ceramic antenna block 3 with the solder pins 11 on the PCB board 1, thus avoiding pin misalignment or solder paste extrusion problems that occur during traditional manual placement.

[0028] Figure 1 The exploded view of the antenna is shown, clearly illustrating the disassembly relationship between the PCB board 1, the support guide 2, and the ceramic antenna block 3. Furthermore, the support guide 2 has a side opening 21, facilitating observation of the solder pins 11 for insufficient solder or solder bridging defects before reflow soldering, thus improving the reliability of the production process. Figure 2 The overall structural diagram further illustrates the assembled state of the components, highlighting the limiting function of the support guide 2. The advantages of this embodiment include: reducing manual alignment errors and improving installation efficiency through the guide 2; providing real-time visual inspection through the side opening 21, reducing the defect rate; and a simple overall structure suitable for automated production lines. The shielding cover 5, in conjunction with the antenna 12, can shield and protect amplifiers and other equipment at the bottom of the PCB board 1 from external signal interference while still enabling signal transmission.

[0029] Example 2

[0030] like Figure 3 As shown, this embodiment focuses on describing the deformation mechanism of the supporting elastic plate 23 and the improvement of installation accuracy, based on embodiment one.

[0031] Specifically, the support elastic plate 23 is fixedly installed on the PCB board 1 inside the side opening 21 and extends to the inside of the support guide 2. When the ceramic antenna block 3 is initially placed, the elastic plastic material of the support elastic plate 23 provides slight resistance to pre-limit the ceramic antenna block 3 and prevent it from sliding. Figure 3 The cross-sectional structure shows the contact point between the supporting elastic plate 23 and the ceramic antenna block 3. After the ceramic antenna block 3 is placed stably, a slight press causes the supporting elastic plate 23 to elastically deform, allowing the ceramic antenna block 3 to fully settle onto the PCB board 1. This also shortens the push distance for pin alignment, thereby improving the mounting accuracy to the micrometer level. Advantages include: elastic deformation buffering reduces component impact and avoids pin damage; automatic locking after deformation enhances shock resistance during reflow soldering; and the bent portion 24 of the supporting elastic plate 23 facilitates subsequent interaction with the protective cover 4, improving overall coordination.

[0032] Example 3

[0033] like Figure 4 As shown, this embodiment focuses on the installation and locking mechanism of the protective cover 4.

[0034] Specifically, the protective cover 4 is positioned above the support guide frame 2 and the ceramic antenna block 3. It has four corner slots 41 that movably engage with the side plates 22 at the four corners of the support guide frame 2. During installation, the side plates 22 slide down along the slots 41, guiding the protective cover 4 into position accurately and preventing tilting. Simultaneously, the bent portion 24 at the end of the support elastic plate 23 is movably positioned within the ventilation groove 42 on the protective cover 4. When the protective cover 4 is pressed down, the bent portion 24 engages with the ventilation groove 42, achieving quick mechanical locking without the need for additional tools. The slots 41 and side plates 22 ensure that the protective cover 4 is installed in one piece, reducing assembly time; the locking design of the bent portion 24 and the ventilation groove 42 enhances structural stability and prevents loosening during transportation or vibration; the protective cover 4 provides physical protection, shielding against external electromagnetic interference and improving antenna signal quality.

[0035] Example 4

[0036] like Figure 2 As shown, this embodiment optimizes heat dissipation and long-term maintenance performance.

[0037] Specifically, the side opening 21 on the support guide frame 2 is aligned with the ventilation groove 42 on the protective cover 4 to form a continuous ventilation path. Figure 2 The overall structure demonstrates this correspondence, allowing airflow to circulate through the side opening 21 and the venting groove 42, effectively dissipating the heat generated by the ceramic antenna block 3 during operation and preventing overheating that could lead to performance degradation. Furthermore, the observation function of the side opening 21 extends to routine maintenance; users can check the pin status through the opening without removing the protective cover 4. This design optimizes heat dissipation and extends component lifespan, making it particularly suitable for high-density integration environments. The porous design of the venting groove 42 combines dust prevention and ventilation, improving environmental adaptability; and the ease of maintenance reduces after-sales costs.

[0038] Working principle: The ceramic antenna block 3 is placed inside the support guide frame 2 by precisely positioning and fixing the PCB board 1 with markings. The side wall of the support guide frame 2 guides the pins to automatically align with the soldering pins 11 on the PCB board 1, avoiding misalignment and solder paste extrusion. The side opening 21 on the support guide frame 2 facilitates observation of soldering quality, improving installation accuracy and production reliability. The support elastic plate 23 is fixed inside the side opening 21. During initial placement, it pre-limits the ceramic antenna block 3. After pressing, it undergoes elastic deformation, allowing the ceramic antenna block 3 to be completely seated on the PCB board 1, shortening the alignment distance and improving micron-level accuracy. The installation accuracy is improved, and the automatic locking after deformation enhances the stability of reflow soldering. The protective cover 4 is guided to fall by the four corner slots 41 and the side plate 22 of the support guide frame 2. The bent part 24 at the end of the support elastic plate 23 is inserted into the ventilation groove 42 of the protective cover 4 to achieve quick mechanical locking without tools, ensuring one-time installation and enhancing structural stability and electromagnetic shielding effect. The side opening 21 of the support guide frame 2 is aligned with the ventilation groove 42 of the protective cover 4 to form a ventilation path, promote airflow circulation and heat dissipation, and prevent the ceramic antenna block 3 from overheating. The side opening 21 also serves as a maintenance observation port, allowing the pin status to be checked without disassembly.

[0039] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A multi-path GNSS built-in positioning antenna, characterized by, The PCB board (1) is provided with solder pins (11), and a support guide frame (2) is fixedly installed on the PCB board (1). A ceramic antenna block (3) is movably arranged between the support guide frames (2), and the size of the ceramic antenna block (3) corresponds to the size of the inner side of the support guide frame (2). A side opening (21) is opened on the support guide frame (2).

2. The multi-path GNSS built-in positioning antenna according to claim 1, wherein, A support elastic plate (23) is fixedly installed on one side of the solder pin (11) on the PCB board (1) inside the side opening (21), and the support elastic plate (23) extends to the inside of the support guide frame (2).

3. The multi-path GNSS built-in positioning antenna according to claim 1, wherein, The bottom of the PCB board (1) is fixedly equipped with a shielding cover (5) and an antenna (12).

4. The multi-channel GNSS built-in positioning antenna according to claim 1, characterized in that, The support guide frame (2) and the ceramic antenna block (3) are covered with protective covers (4).

5. A multi-channel GNSS built-in positioning antenna according to claim 4, characterized in that, The protective cover (4) has slots (41) at its four corners, and the side plates (22) at the four corners of the support guide frame (2) are movably disposed in the slots (41).

6. A multi-channel GNSS built-in positioning antenna according to claim 5, characterized in that, The ventilation slots (42) symmetrically opened on the protective cover (4) correspond to the side openings (21).

7. A multi-channel GNSS built-in positioning antenna according to claim 2, characterized in that, The bent portion (24) at the end of the supporting elastic plate (23) is movably disposed within the ventilation groove (42).

8. A multi-channel GNSS built-in positioning antenna according to claim 2, characterized in that, The supporting elastic plate (23) is an elastic plastic plate.

9. A multi-channel GNSS built-in positioning antenna according to claim 1, characterized in that, The support guide frame (2) is a rigid plastic frame.

Images