GPS and Beidou composite navigation terminal antenna

Abstract

The utility model relates to a GPS (global positioning system) and Beidou composite navigation terminal antenna, which belongs to the technical field of navigation terminal antennas and comprises a composite navigation terminal antenna body, a lower ceramic substrate and a Wilkinson power divider, the lower ceramic substrate and the Wilkinson power divider are arranged on the composite navigation terminal antenna body, four receding grooves are arranged on the top surface of the lower ceramic substrate, and the Wilkinson power divider is arranged on the lower ceramic substrate. The top surface of the Wilkinson power divider is fixedly connected with four connecting columns, one end of each connecting column penetrates through the corresponding receding groove and extends to the top of the lower-layer ceramic substrate, and the left side surfaces of the four connecting columns are all provided with placing grooves. According to the GPS and Beidou composite navigation terminal antenna, the lower-layer ceramic substrate and the Wilkinson power divider are fixed through attachment between the fixing plate and the lower-layer ceramic substrate, operation through an external tool is not needed, a worker can disassemble and assemble the antenna conveniently, the connecting column is supported through attachment between the rubber ring and the abdicating groove, and the antenna is convenient to assemble and disassemble. The stability of the connecting column is improved.

Description

Technical Field

[0001] This utility model relates to the field of navigation terminal antenna technology, specifically a GPS and Beidou composite navigation terminal antenna. Background Technology

[0002] The BeiDou Navigation Satellite System is a satellite navigation system independently constructed and operated by China to meet the needs of national security and economic and social development. It is an important national space infrastructure that provides global users with all-weather, all-time, high-precision positioning, navigation, and timing services. In order to meet the communication quality requirements when the relative position and attitude of the satellite and the ground terminal are uncertain during satellite communication, BeiDou navigation antennas and GPS antennas are expected to cover the entire frequency band and have low axial ratio characteristics.

[0003] Chinese patent CN218827836U discloses a GPS and BeiDou composite navigation terminal antenna. This patent discloses a technical solution that improves the axial ratio bandwidth, solving the problem that in the existing BeiDou and GPS navigation antenna composite state, the BeiDou band only has an axial ratio bandwidth of about 1.6% (3dB), and the axial ratio can only be guaranteed to be below 3dB in the 1.258GHz to 1.278GHz range, resulting in a high antenna scrap rate and requiring a lot of frequency tuning work to meet the axial ratio bandwidth requirements.

[0004] When in use, this device is fed through the Wilkinson power divider network via the BeiDou navigation frequency band, which meets the requirements of high amplitude and phase stability and low dispersion of the feed radio frequency signal for dual feed points. However, the device is fixed between the lower ceramic substrate and the Wilkinson power divider by post-screws. When the device is disassembled and assembled, it requires the use of external tools, which is inconvenient for the operator. Therefore, a GPS and BeiDou composite navigation terminal antenna is proposed to solve the above problems. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a GPS and BeiDou composite navigation terminal antenna, which has the advantage of convenient assembly and disassembly. It solves the problem that when the device is used, it is fed through the Wilkinson power divider network via the BeiDou navigation frequency band, which meets the requirements of high amplitude and phase stability and low dispersion of the feed radio frequency signal for dual feed points. However, the device is fixed between the lower ceramic substrate and the Wilkinson power divider by post head screws, and the disassembly and assembly of the device requires the use of external tools, which is inconvenient for operators.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a GPS and Beidou composite navigation terminal antenna, comprising a composite navigation terminal antenna body and a lower ceramic substrate and a Wilkinson power divider disposed on the composite navigation terminal antenna body, wherein the top surface of the lower ceramic substrate has four clearance slots.

[0007] The top surface of the Wilkinson power divider is fixedly connected to four connecting posts, each with one end passing through a clearance slot and extending to the top of the lower ceramic substrate. Each of the four connecting posts has a placement slot on its left side. Each of the four placement slots contains two fixing plates. The eight fixing plates pass through the placement slots and extend to the top surface of the lower ceramic substrate. Each of the four connecting posts has a rubber ring fixedly fitted on its outer peripheral wall.

[0008] Each of the four placement slots is equipped with a support assembly to support the fixing plate.

[0009] The lower ceramic substrate is provided with a limiting component to restrict the fixing plate.

[0010] Furthermore, the connecting column and the relief groove are fitted with a clearance, and the rubber ring and the relief groove are attached.

[0011] Furthermore, the clearance groove is a rectangular groove, the connecting column is a rectangular column, and the fixing plate is bonded to the lower ceramic substrate.

[0012] Furthermore, the support assembly includes a mounting plate, which is fixedly connected inside the placement groove. Telescopic rods are fixedly connected to the left and right sides of the mounting plate. Support plates are fixedly connected to the sides of the two telescopic rods away from the mounting plate. The mounting plate and the support plate are fixedly connected. Springs, which are fixedly connected to the mounting plate and the support plate respectively, are fitted on the outer peripheral walls of the two telescopic rods. Two support grooves are opened inside the connecting column. Support blocks with one end extending into the support groove are fixedly connected to the top and bottom surfaces of the two support plates. Rubber pads are fixedly connected to the front and back of the four support blocks.

[0013] Furthermore, the support block and the support groove are slidably connected, the rubber pad and the support groove are fitted together, and the support groove is located at the top and bottom of the placement groove.

[0014] Furthermore, the telescopic rod consists of a sleeve and a moving rod. One end of the moving rod passes through and extends into the interior of the sleeve. A limiting block located inside the sleeve is fixedly connected to the outside of the moving rod. A through hole adapted to the moving rod is opened on one side of the sleeve.

[0015] Furthermore, the limiting component includes eight limiting rods, all of which are fixedly connected to the top surface of the lower ceramic substrate. Each of the eight fixing plates has a limiting hole on one side near the limiting rod, and the limiting rod extends into the limiting hole. The top surface of the lower ceramic substrate has eight positioning grooves, and the bottom surface of each of the eight fixing plates has a rubber block with one end extending into the positioning groove.

[0016] Furthermore, the limiting rod and the limiting hole are fitted with a clearance, the limiting rod is an L-shaped rod, and the rubber block and the positioning groove are attached.

[0017] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0018] 1. The GPS and Beidou composite navigation terminal antenna fixes the lower ceramic substrate and Wilkinson power divider by bonding the fixing plate and the lower ceramic substrate together. No external tools are required, making it convenient for staff to disassemble and assemble. The connection column is supported by the bonding between the rubber ring and the relief groove, which improves the stability of the connection column.

[0019] 2. The GPS and Beidou composite navigation terminal antenna supports the fixed plate under the action of springs, improving the stability of the fixed plate. The fixed plate is restricted by the gap fit between the limiting rod and the limiting hole, as well as the fit between the rubber block and the positioning groove, improving the stability of the fixed plate. At the same time, the support plate is supported by the sliding connection between the support block and the support groove, improving the stability of the support plate. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the internal structure of the clearance groove in this utility model.

[0022] Figure 3 This is an enlarged schematic diagram of the internal structure of the groove in this utility model.

[0023] Figure 4 This is a schematic diagram of the right side of the connecting column in the structure of this utility model.

[0024] In the diagram: 1 Composite navigation terminal antenna body, 2 Lower ceramic substrate, 3 Wilkinson power divider, 4 Connecting column, 5 Fixing plate, 6 Limiting rod, 7 Rubber ring, 8 Mounting plate, 9 Clearance groove, 10 Positioning groove, 11 Rubber block, 12 Limiting hole, 13 Placement groove, 14 Rubber pad, 15 Support block, 16 Support groove, 17 Telescopic rod, 18 Spring, 19 Support plate. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Example 1: Please refer to Figure 1-4 The GPS and Beidou composite navigation terminal antenna in this embodiment includes a composite navigation terminal antenna body 1, a lower ceramic substrate 2 and a Wilkinson power divider 3 disposed on the composite navigation terminal antenna body 1, and four clearance slots 9 are formed on the top surface of the lower ceramic substrate 2.

[0027] The top surface of the Wilkinson power divider 3 is fixedly connected with four connecting posts 4, one end of which passes through four clearance slots 9 and extends to the top of the lower ceramic substrate 2. Each of the four connecting posts 4 has a placement slot 13 on its left side. Each of the four placement slots 13 contains two fixing plates 5. The eight fixing plates 5 pass through the placement slots 13 and extend to the top surface of the lower ceramic substrate 2. Each of the four connecting posts 4 has a rubber ring 7 fixedly fitted on its outer peripheral wall.

[0028] Among them, the connecting column 4 and the relief groove 9 are fitted with a clearance, the rubber ring 7 and the relief groove 9 are attached, the relief groove 9 is a rectangular groove, the connecting column 4 is a rectangular column, and the fixing plate 5 and the lower ceramic substrate 2 are attached.

[0029] Specifically, the lower ceramic substrate 2 is pushed to make it fit with the Wilkinson power divider 3. When the connecting post 4 passes through the relief groove 9 and the fixing plate 5 is on top of the lower ceramic substrate 2, the fixing plate 5 is pushed to reset, making the fixing plate 5 fit with the lower ceramic substrate 2. The fixing plate 5 and the lower ceramic substrate 2 are fixed together by fitting together. The connecting post 4 is supported by the fit between the rubber ring 7 and the relief groove 9, which improves the stability of the connecting post 4.

[0030] Example 2: Please refer to Figure 1-4In this embodiment, based on Example 1, each of the four placement slots 13 is equipped with a support assembly. The support assembly includes a mounting plate 8, which is fixedly connected to the inside of the placement slot 13. Telescopic rods 17 are fixedly connected to the left and right sides of the mounting plate 8. Support plates 19 are fixedly connected to the sides of the two telescopic rods 17 away from the mounting plate 8. The fixing plate 5 and the support plate 19 are fixedly connected. Springs 18, which are fixedly connected to the mounting plate 8 and the support plate 19 respectively, are fitted on the outer peripheral walls of the two telescopic rods 17. Two support slots 16 are opened inside the connecting column 4. Support blocks 15, which extend into the support slots 16, are fixedly connected to the top and bottom surfaces of the two support plates 19. Rubber pads 14 are fixedly connected to the front and back of the four support blocks 15.

[0031] Among them, the support block 15 and the support groove 16 are slidably connected, the rubber pad 14 and the support groove 16 are fitted together, the support groove 16 is located at the top and bottom of the placement groove 13, the telescopic rod 17 is composed of a sleeve and a moving rod, one end of the moving rod passes through and extends into the interior of the sleeve, the outer side of the moving rod is fixedly connected to a limiting block located inside the sleeve, and a through hole adapted to the moving rod is opened on one side of the sleeve.

[0032] Specifically, pushing the fixed plate 5 causes it to move, which in turn moves the support plate 19, compressing the telescopic rod 17 and the spring 18, causing them to contract. The sliding connection between the support block 15 and the support groove 16 supports the support plate 19, improving its stability. The fit between the rubber pad 14 and the support groove 16 supports the support block 15, improving its stability. When the fixed plate 5 is on top of the lower ceramic substrate 2, the fixed plate 5 is released, and the spring 18 pushes the fixed plate 5 back to its original position.

[0033] Example 3: Please refer to Figure 1-4 In this embodiment, based on Embodiment 1 and Embodiment 2, a limiting component is provided on the lower ceramic substrate 2. The limiting component includes eight limiting rods 6, all of which are fixedly connected to the top surface of the lower ceramic substrate 2. Each of the eight fixing plates 5 has a limiting hole 12 on one side near the limiting rod 6, and the limiting rod 6 extends into the interior of the limiting hole 12. The top surface of the lower ceramic substrate 2 has eight positioning grooves 10, and the bottom surface of each of the eight fixing plates 5 is fixedly connected to a rubber block 11 with one end extending into the interior of the positioning groove 10.

[0034] Among them, the limiting rod 6 and the limiting hole 12 are fitted with a clearance, the limiting rod 6 is an L-shaped rod, and the rubber block 11 and the positioning groove 10 are attached.

[0035] Specifically, the fixing plate 5 is reset, so that the fixing plate 5 and the lower ceramic substrate 2 are attached. The rubber block 11 is squeezed by the lower ceramic substrate 2, causing the rubber block 11 to shrink. When the rubber block 11 and the positioning groove 10 are aligned, the rubber block 11 is reset and attached to the positioning groove 10, thus restricting the fixing plate 5. The limiting rod 6 is inserted into the interior of the limiting hole 12. The fixing plate 5 is fixed by the gap fit between the limiting rod 6 and the limiting hole 12.

[0036] The working principle of the above embodiments is as follows:

[0037] Pushing the fixed plate 5 causes it to move, which in turn moves the support plate 19, compressing the telescopic rod 17 and spring 18, causing them to retract. The sliding connection between the support block 15 and the support groove 16 supports the support plate 19, improving its stability. The contact between the rubber pad 14 and the support groove 16 supports the support block 15, improving its stability. Pushing the lower ceramic substrate 2 causes it to contact the Wilkinson power divider 3. The connecting post 4 passes through the clearance groove 9. When the fixed plate 5 is on top of the lower ceramic substrate 2, the fixed plate 5 is released, and the spring 18... Under the action, the fixing plate 5 is pushed to reset, so that the fixing plate 5 and the lower ceramic substrate 2 are attached. The rubber block 11 is squeezed by the lower ceramic substrate 2, causing the rubber block 11 to shrink. When the rubber block 11 and the positioning groove 10 are aligned, the rubber block 11 resets and is attached to the positioning groove 10, thus restricting the fixing plate 5. By attaching the fixing plate 5 and the lower ceramic substrate 2, the lower ceramic substrate 2 and the Wilkinson power divider 3 are fixed. The limiting rod 6 is inserted into the limiting hole 12. The fixing plate 5 is fixed by the gap fit between the limiting rod 6 and the limiting hole 12. The connecting column 4 is supported by the fit between the rubber ring 7 and the relief groove 9, thus improving the stability of the connecting column 4.

[0038] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0039] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A GPS and Beidou composite navigation terminal antenna, comprising a composite navigation terminal antenna body (1) and a lower ceramic substrate (2) and a Wilkinson power divider (3) arranged on the composite navigation terminal antenna body (1), characterized in that: The top surface of the lower ceramic substrate (2) is provided with four clearance grooves (9); The top surface of the Wilkinson power divider (3) is fixedly connected with four connecting columns (4) whose one ends respectively penetrate four clearance grooves (9) and extend to the top of the lower ceramic substrate (2); the left sides of the four connecting columns (4) are each provided with a placement groove (13); two fixing plates (5) are each placed inside the four placement grooves (13); the eight fixing plates (5) penetrate the placement grooves (13) and extend to the top surface of the lower ceramic substrate (2); and the outer peripheral walls of the four connecting columns (4) are each fixedly sleeved with a rubber ring (7); A supporting component is provided inside each of the four placement grooves (13), and a limiting component is provided on the lower ceramic substrate (2).

2. A GPS and Beidou composite navigation terminal antenna according to claim 1, characterized in that: The connecting column (4) and the clearance groove (9) are clearance-matched, and the rubber ring (7) and the clearance groove (9) are in close contact.

3. A GPS and Beidou composite navigation terminal antenna according to claim 2, characterized in that: The clearance groove (9) is a rectangular groove, the connecting column (4) is a rectangular column, and the fixing plate (5) and the lower ceramic substrate (2) are bonded.

4. The GPS and Beidou composite navigation terminal antenna according to claim 1, characterized in that: The support assembly comprises a mounting plate (8), wherein the mounting plate (8) is fixedly connected to the inside of the placement groove (13), the left side and the right side of the mounting plate (8) are fixedly connected to telescopic rods (17), the side of the two telescopic rods (17) away from the mounting plate (8) are fixedly connected to a support plate (19), the fixing plate (5) and the support plate (19) are fixedly connected, the outer peripheral walls of the two telescopic rods (17) are respectively provided with springs (18) fixedly connected to the mounting plate (8) and the support plate (19), two support grooves (16) are opened inside the connecting column (4), the top and bottom surfaces of the two support plates (19) are fixedly connected to support blocks (15) with one end extending into the inside of the support groove (16), and the front and back surfaces of the four support blocks (15) are fixedly connected to rubber pads (14).

5. The GPS and Beidou composite navigation terminal antenna according to claim 4, characterized in that: The support block (15) and the support groove (16) are slidably connected, the rubber pad (14) and the support groove (16) are in close contact with each other, and the support groove (16) is located at the top and bottom of the placement groove (13).

6. The GPS and Beidou composite navigation terminal antenna according to claim 5, characterized in that: The telescopic rod (17) is composed of a sleeve and a moving rod. One end of the moving rod penetrates and extends into the sleeve. The outer side of the moving rod is fixedly connected to a limiting block located inside the sleeve. A through hole matching the moving rod is opened on one side of the sleeve.

7. The GPS and Beidou composite navigation terminal antenna according to claim 4, characterized in that: The limiting assembly comprises eight limiting rods (6), the eight limiting rods (6) are fixedly connected to the top surface of the lower ceramic substrate (2), the eight fixing plates (5) are provided with limiting holes (12) on one side close to the limiting rods (6), the limiting rods (6) extend to the inside of the limiting holes (12), the top surface of the lower ceramic substrate (2) is provided with eight positioning grooves (10), and the bottom surfaces of the eight fixing plates (5) are fixedly connected to a rubber block (11) with one end extending to the inside of the positioning groove (10).

8. The GPS and Beidou composite navigation terminal antenna according to claim 7, characterized in that: The limiting rod (6) and the limiting hole (12) are clearance-matched, the limiting rod (6) is an L-shaped rod, and the rubber block (11) and the positioning groove (10) are in close contact.

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