A GNSS receiver anti-jam antenna

Abstract

The utility model discloses a kind of GNSS receiver anti-interference antennas, including antenna shell, rubber ring, positioning connecting mechanism and multi-band adaptive electromagnetic interference suppressor, antenna shell is composed of top cover and installation shell body, bottom is equipped with mounting hole and connecting port, rubber ring is embedded to realize sealing outside, positioning connecting mechanism includes annular support plate and array distribution's elastic buckle component, through the elastic action of reset spring of the clamping cooperation of movable rod and positioning groove, the stable and convenient connection of top cover and installation shell body is realized, top cover inside is equipped with ultra-thin ferrite wave-absorbing sheet, antenna inside is equipped with the multi-band adaptive electromagnetic interference suppressor of high-frequency magnetic ring cover, three synergies form omnidirectional anti-interference structure;The utility model has connection stability and dismounting convenience, anti-interference performance is excellent and sealing protection effect is good, can be adapted to complex outdoor environment, ensure the signal reception stability of GNSS receiver.

Description

Technical Field

[0001] This utility model belongs to the field of satellite antenna technology, and in particular relates to an anti-interference antenna for a GNSS receiver. Background Technology

[0002] As a core component for satellite signal reception, GNSS receiver antennas are widely used in surveying, navigation, communication, and other fields. Their operating environments are often complex and diverse, requiring not only the stability of the connections between the antenna's components but also protection against the effects of external electromagnetic interference, dust, moisture, and other factors on signal reception.

[0003] The connection between the top cover and the mounting housing of existing GNSS receiver antennas is mostly fixed with bolts or simply snapped together. Bolt fixing is cumbersome to install and remove, while simple snapping is prone to loosening under vibration, making it difficult to balance connection stability and ease of operation. In addition, the anti-interference structure design in existing technologies is simple, mostly using only a single shielding layer or absorbing material, which has limited resistance to multi-band electromagnetic interference and is susceptible to interference conducted by cables.

[0004] To address the aforementioned issues, this invention proposes an anti-interference antenna for a GNSS receiver, which optimizes the connection structure, enhances anti-interference performance, and improves sealing, ensuring stable operation of the antenna in complex environments. Summary of the Invention

[0005] The main purpose of this invention is to overcome the shortcomings of the prior art and provide an anti-interference antenna for a GNSS receiver. By combining structural anti-interference design with modular assembly structure, it optimizes maintainability while ensuring high performance.

[0006] This utility model achieves the above-mentioned objectives through the following technical solution: it includes an antenna housing, the antenna housing includes a top cover and a mounting housing, the bottom of the mounting housing is provided with mounting holes and connection ports, the outer side of the antenna housing is also provided with a concave area for embedding a rubber ring, the inner side of the mounting housing is provided with a positioning connection mechanism for connecting the top cover and the mounting housing, the positioning connection mechanism includes an annular support plate, the annular support plate is provided with an array of elastic buckle components, and the inner side of the top cover is provided with a positioning groove adapted to the elastic buckle components.

[0007] Furthermore, the elastic buckle assembly includes an arc-shaped mounting component, an inner side of which is provided with a mounting frame, and an inner side of which is provided with a movable rod. Both the arc-shaped mounting component and the mounting frame are provided with holes that are adapted to the movable rod, and the holes are used for the movable rod to slide inside them.

[0008] Furthermore, the annular bracket plate is connected to the mounting housing, the arc-shaped mounting piece is integrally formed with the annular bracket plate, the front end of the mounting frame has ear pieces on both sides and is connected to the arc-shaped mounting piece, and the front and rear ends of the mounting frame are provided with holes through which the movable rod passes.

[0009] Furthermore, a circular abutment plate is fixedly provided on the outer side of the movable rod, and a return spring is provided between the abutment plate and the inner side of the rear end of the mounting frame, and the return spring is sleeved on the outer side of the movable rod.

[0010] Furthermore, the maximum diameter of the abutment plate does not exceed the inner diameter of the mounting frame, and one end of the movable rod is hemispherical and inserted into the positioning groove. The positioning groove can also be hemispherical or a concave structure of a cylinder plus a hemisphere.

[0011] Furthermore, an ultra-thin ferrite absorbing sheet is attached to the inner top surface of the top cover, and the outer edge of the ultra-thin ferrite absorbing sheet is clamped by an annular band on the inner side of the top cover.

[0012] Furthermore, the inner side of the antenna housing is provided with a multi-band adaptive electromagnetic interference suppressor, and the outer side of the multi-band adaptive electromagnetic interference suppressor is fitted with a high-frequency magnetic ring made of nickel-zinc ferrite material.

[0013] Furthermore, the connection between the rubber ring and the antenna housing is at least one of adhesive connection or sleeve connection.

[0014] Beneficial effects: This utility model is reasonably designed and has the following beneficial effects: 1. In this utility model, the positioning connection mechanism adopts an elastic buckle component design. The elastic force of the return spring is used to make the movable rod tightly engage with the positioning groove, so as to achieve a stable connection between the top cover and the mounting shell and effectively avoid loosening in the vibration environment. At the same time, during disassembly and assembly, only external force needs to be applied to push the movable rod out of the positioning groove, without the need for additional tools, making the operation convenient and efficient. 2. In this utility model, a triple anti-interference structure consisting of an ultra-thin ferrite absorbing sheet, a multi-band adaptive electromagnetic interference suppressor, and a high-frequency magnetic ring is used. The ultra-thin ferrite absorbing sheet can absorb high-frequency electromagnetic interference that penetrates the shell, the multi-band adaptive electromagnetic interference suppressor can specifically suppress interference signals in the commonly used L1 / L2 / L5 frequency bands of GNSS, and the high-frequency magnetic ring can block common-mode interference conducted by the cable. The three work together to achieve all-round anti-interference through absorption, active suppression, and conduction blocking, which greatly improves the stability of signal reception. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the bottom structure of this utility model; Figure 3This is a schematic diagram of the mounting housing structure of this utility model; Figure 4 This is a schematic diagram of the positioning and connecting mechanism of this utility model; Figure 5 This is a schematic diagram of the elastic buckle assembly structure of this utility model; Figure 6 This is a partial sectional view of the top cover of this utility model; Figure 7 This is a partial structural diagram of the mounting housing of this utility model.

[0016] In the diagram: 1-antenna housing, 2-rubber ring, 3-positioning connection mechanism, 4-multi-band adaptive electromagnetic interference suppressor; 11-Top cover, 12-Mounting housing, 13-Mounting hole, 14-Connection port, 15-Ultra-thin ferrite absorbing sheet, 31-Annular bracket plate, 32-Elastic buckle assembly, 33-Positioning groove, 41-High-frequency magnetic ring; 321-Arc-shaped mounting component, 322-Mounting frame, 323-Moving rod, 324-Abutting plate, 325-Reset spring. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0018] Combination Figures 1 to 7 The GNSS receiver anti-interference antenna shown includes an antenna housing 1, which includes a top cover 11 and a mounting housing 12. The mounting housing 12 has mounting holes 13 and connection ports 14 at its bottom. The outer side of the antenna housing 1 also has a recessed area for embedding a rubber ring 2. A positioning connection mechanism 3 is installed on the inner side of the mounting housing 12 for connecting the top cover 11 and the mounting housing 12. The positioning connection mechanism 3 includes an annular support plate 31, on which elastic buckle components 32 are arrayed. The inner side of the top cover 11 has a positioning groove 33 that matches the elastic buckle components 32.

[0019] The elastic buckle assembly 32 includes an arc-shaped mounting part 321, an mounting frame 322 on the inner side of the arc-shaped mounting part 321, and a movable rod 323 on the inner side of the mounting frame 322. Both the arc-shaped mounting part 321 and the mounting frame 322 have holes that are adapted to the movable rod 323, and the holes are used for the movable rod 323 to slide inside them.

[0020] The annular bracket plate 31 is connected to the mounting housing 12. The arc-shaped mounting piece 321 is integrally formed with the annular bracket plate 31. The front end of the mounting frame 322 is provided with lugs on both sides and connected to the arc-shaped mounting piece 321. The front and rear ends of the mounting frame 322 are provided with holes through which the movable rod 323 passes.

[0021] A circular abutment plate 324 is fixedly provided on the outside of the movable rod 323. A return spring 325 is provided between the abutment plate 324 and the inner side of the rear end of the mounting frame 322. The return spring 325 is sleeved on the outside of the movable rod 323.

[0022] The maximum diameter of the abutment plate 324 does not exceed the inner diameter of the mounting frame 322. One end of the movable rod 323 is hemispherical and inserted into the positioning groove 33. The positioning groove 33 can also be hemispherical or a concave structure of a cylinder plus a hemisphere.

[0023] An ultra-thin ferrite absorbing sheet 15 is attached to the inner top surface of the top cover 11, and the outer edge of the ultra-thin ferrite absorbing sheet 15 is clamped by an annular band on the inner side of the top cover 11.

[0024] The inner side of the antenna housing 1 is also provided with a multi-band adaptive electromagnetic interference suppressor 4, and the outer side of the multi-band adaptive electromagnetic interference suppressor 4 is covered with a high-frequency magnetic ring 41 made of nickel-zinc ferrite material.

[0025] The connection between the rubber ring 2 and the antenna housing 1 is at least one of adhesive connection or sleeve connection.

[0026] Working principle: When the top cover 11 and the mounting housing 12 are closed, the hemispherical end of the movable rod 323 contacts the positioning groove 33 and is subjected to pressure, pushing the movable rod 323 to slide into the mounting frame 322. At the same time, the return spring 325 is compressed. When the top cover 11 is fully closed, the movable rod 323 is aligned with the positioning groove 33. The return spring 325 releases its elastic potential energy, pushing the abutment plate 324 to drive the movable rod 323 into the positioning groove 33, thus achieving the locking and fixing of the two. When disassembling, an external force is applied to push the top cover 11 in the opposite direction. The inner wall of the positioning groove 33 generates lateral pressure on the hemispherical end of the movable rod 323, causing the movable rod 323 to compress the spring and disengage from the positioning groove 33, thereby separating the top cover 11 from the mounting housing 12. When external electromagnetic interference signals come into contact with the antenna housing 1, they are first blocked by the housing. Some of the high-frequency interference signals that penetrate the housing are absorbed by the ultra-thin ferrite absorbing sheet 15 on the inner side of the top cover and are converted into heat energy through hysteresis loss. For electromagnetic interference in a specific frequency band, the multi-band adaptive electromagnetic interference suppressor 4 can automatically identify the interference frequency band, adjust the suppression parameters, and specifically cancel the interference signals. At the same time, the high-frequency magnetic ring 41 is sleeved on the outside of the connecting cable of the electromagnetic interference suppressor, which can suppress common-mode interference conducted by the cable and prevent interference signals from entering the core components of the antenna through the cable, thus ensuring stable reception of satellite signals.

[0027] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A GNSS receiver anti-interference antenna, comprising an antenna housing (1), the antenna housing (1) comprising a top cover (11) and a mounting housing (12), the mounting housing (12) having mounting holes (13) and a connection port (14) at its bottom, and the antenna housing (1) also having a recessed area on its outer side for embedding a rubber ring (2), characterized in that: The mounting housing (12) is equipped with a positioning connection mechanism (3) for connecting the top cover (11) and the mounting housing (12). The positioning connection mechanism (3) includes an annular support plate (31). An elastic buckle assembly (32) is arranged on the annular support plate (31). The top cover (11) is provided with a positioning groove (33) that is adapted to the elastic buckle assembly (32).

2. A GNSS receiver anti-jam antenna according to claim 1, characterized in that: The elastic buckle assembly (32) includes an arc-shaped mounting component (321), an mounting frame (322) is provided on the inner side of the arc-shaped mounting component (321), and a movable rod (323) is provided on the inner side of the mounting frame (322). Holes adapted to the movable rod (323) are provided on both the arc-shaped mounting component (321) and the mounting frame (322), and the holes are used for the movable rod (323) to slide inside them.

3. A GNSS receiver anti-jam antenna according to claim 2, wherein: A circular abutment plate (324) is fixedly provided on the outside of the movable rod (323). A return spring (325) is provided between the abutment plate (324) and the inner side of the rear end of the mounting frame (322). The return spring (325) is sleeved on the outside of the movable rod (323).

4. A GNSS receiver anti-jam antenna according to claim 3, wherein: The top surface of the inner side of the top cover (11) is fitted with an ultra-thin ferrite absorbing sheet (15), and the outer edge of the ultra-thin ferrite absorbing sheet (15) is clamped by an annular band on the inner side of the top cover (11).

5. A GNSS receiver anti-jam antenna according to claim 4, wherein: The antenna housing (1) is further provided with a multi-band adaptive electromagnetic interference suppressor (4) on the inner side, and a high-frequency magnetic ring (41) made of nickel-zinc ferrite material is sleeved on the outer side of the multi-band adaptive electromagnetic interference suppressor (4).

6. A GNSS receiver anti-jam antenna according to claim 5, wherein: The connection between the rubber ring (2) and the antenna housing (1) is at least one of adhesive connection or sleeve connection.

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