Grid antenna and signal amplifier

Abstract

The utility model relates to wireless communication technical field, concretely relates to a kind of lattice antenna and signal amplifier, including support outer frame, rib, multiple vertical poles and feed source, the rib both ends are respectively with the fixed connection of two vertical strips of support outer frame along horizontal direction arrangement, the feed source is fixedly installed in the middle part of rib by support pole, multiple the vertical pole is evenly arranged along rib length direction, and the middle part of vertical pole and rib are along the sliding connection of rib length direction;Locking portion for limiting the sliding of vertical pole is arranged between the vertical pole and rib. To solve the problem that rib and vertical pole are fixedly connected in prior art, so that antenna is only applicable to a certain specific frequency band, lacks flexibility.

Description

Technical Field

[0001] This utility model relates to the field of wireless communication technology, specifically to a grid antenna and a signal amplifier. Background Technology

[0002] Grid antennas, as a common type of directional antenna, are widely used in long-distance point-to-point wireless communication due to their advantages such as high gain, good directivity, and low wind resistance. A grid antenna mainly consists of a supporting outer frame (outer edge ring), arc-shaped ribs fixedly mounted on the outer frame, and multiple vertical rods (spokes, perpendicular to the radial ribs) arranged parallel to and fixed to the ribs, together forming a parabolic reflective grid. The curvature of the reflective surface is determined by the fixedly mounted ribs, thereby focusing the signal at the focal point.

[0003] In existing technologies, ribs and vertical rods are typically fixed together by welding or riveting. Since the antenna's operating frequency is closely related to the grid spacing, according to electromagnetic wave theory, the grid spacing must be much smaller than the operating wavelength to effectively reflect signals. However, a fixed structure means that each antenna is only suitable for a specific frequency band (such as 2.4GHz or 5.8GHz), lacking flexibility. When the operating environment requires a frequency change, the entire antenna must be replaced, increasing the user's equipment costs. Utility Model Content

[0004] In view of this, the purpose of this utility model is to provide a grid antenna and signal amplifier to solve the problem that the existing technology of fixed connection between ribs and vertical rods makes the antenna only suitable for a specific frequency band and lacks flexibility.

[0005] This utility model is achieved through the following technical solution:

[0006] A grid antenna includes a supporting frame, ribs, multiple vertical rods, and a feed source. The two ends of the ribs are fixedly connected to two vertical rods arranged horizontally along the supporting frame. The feed source is fixedly installed in the middle of the ribs by a support rod. The multiple vertical rods are evenly arranged along the length of the ribs, and the middle of the vertical rods is slidably connected to the ribs along the length of the ribs.

[0007] A locking part is provided between the vertical rod and the rib to restrict the sliding of the vertical rod.

[0008] Furthermore, a first groove extending in the length direction of the rib is provided on the side of the rib facing the vertical rod. A slider is provided in the middle of the vertical rod. One end of the slider is fixedly connected to the vertical rod, and the other end is inserted into the first groove and slides in cooperation with the first groove along the length direction of the rib.

[0009] Furthermore, the two horizontal bars arranged vertically on the supporting outer frame are provided with second sliding grooves on their opposing surfaces, and the second sliding grooves extend along the length of the horizontal bars;

[0010] The two ends of the vertical rod are respectively inserted into the two second sliding grooves and slide along the length of the horizontal bar.

[0011] Furthermore, a strip-shaped hole extending in the same direction as the first slide groove is provided on the inner wall of the first slide groove along the vertical direction, and the locking part includes a screw and a nut adapted to the screw;

[0012] One end of the screw is inserted into the slotted hole and fixedly connected to the slider on the vertical rod, while the other end is inserted into the nut and connected by a threaded connection.

[0013] Furthermore, a friction plate is provided between the nut and the rib, and a through hole is provided on the friction plate, the diameter of which is equal to the outer diameter of the screw.

[0014] The end of the screw facing away from the slider is inserted into the nut through the through hole, and the nut pushes the friction plate against the outer surface of the rib.

[0015] Furthermore, the outer surface of the rib with the strip-shaped hole is engraved with scale lines, which are evenly distributed along the length of the rib.

[0016] Furthermore, the scale line is located on the side of the strip hole facing away from the vertical rod, the friction plate is sharp on the side facing away from the rib, and the scale line is located on the movement trajectory of the tip of the friction plate;

[0017] The bottom surface of the friction plate is provided with a protrusion, which is embedded in the strip hole, and the two sides of the protrusion are respectively attached to the two side walls of the strip hole along the width direction of the rib.

[0018] A signal amplifier includes the aforementioned grid antenna and a signal amplifier body, wherein the feed source of the grid antenna is electrically connected to the signal input terminal of the signal amplifier body via a coaxial cable;

[0019] The signal amplifier body is equipped with:

[0020] The signal processing module is used to filter and amplify the radio frequency signals received by the grid antenna with low noise.

[0021] And a power module for supplying power to the signal processing module and the grid antenna.

[0022] The beneficial effects of this utility model are as follows:

[0023] This grid antenna and signal amplifier, by sliding the vertical rods to the ribs, allows for changing the spacing between adjacent vertical rods, thus varying the grid spacing and enabling it to be used in different frequency bands, offering high flexibility. A locking mechanism further secures the vertical rods, limiting their sliding and ensuring stable antenna operation.

[0024] Other advantages, objectives, and features of this invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination and study, or may be learned from practice of this invention. The objectives and other advantages of this invention can be realized and obtained through the following description. Attached Figure Description

[0025] Figure 1 This is a three-dimensional structural diagram of an embodiment of the present utility model;

[0026] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0027] Figure 3 This is a schematic diagram of the planar structure of an embodiment of the present utility model;

[0028] Figure 4 for Figure 3 Sectional view of BB;

[0029] Figure 5 This is a three-dimensional structural diagram of the vertical rod in an embodiment of this utility model.

[0030] In the diagram: 1. Support frame; 11. Second slide groove; 2. Rib; 21. First slide groove; 22. Strip hole; 23. Scale line; 3. Vertical rod; 31. Slider; 4. Feed source; 5. Screw; 6. Nut; 7. Friction plate; 71. Protrusion. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0032] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0033] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0034] In the above description of this utility model, it should be noted that the terms "one side," "the other side," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0035] Furthermore, terms such as "identical" do not imply that components must be absolutely identical; minor differences are permissible. The term "perpendicular" simply means that the positional relationship between components is more perpendicular than "parallel," not that the structure must be perfectly perpendicular; a slight tilt is acceptable.

[0036] Please see Figure 1-5 This utility model provides a technical solution: a grid antenna, including a supporting outer frame 1, ribs 2, multiple vertical rods 3 and a feed source 4. The two ends of the ribs 2 are respectively fixedly connected to two vertical rods arranged horizontally in the supporting outer frame 1. The feed source 4 is fixedly installed in the middle of the ribs 2 by a support rod. The multiple vertical rods 3 are evenly arranged along the length of the ribs 2, and the middle of the vertical rods 3 is slidably connected to the ribs 2 along the length of the ribs 2.

[0037] A locking part is provided between the vertical rod 3 and the rib 2 to restrict the sliding of the vertical rod 3.

[0038] In this design, by sliding the vertical rod 3 to the rib 2, the spacing between two adjacent vertical rods 3 can be changed, thus altering the grid spacing. This allows for application to different frequency bands and offers high flexibility. Furthermore, a locking mechanism secures the vertical rod 3, limiting its sliding and ensuring stable antenna operation.

[0039] The support rod of feed 4 and rib 2 are detachably fixed together, such as by bolts. After adjusting or changing the grid spacing (changing the frequency), feed 4 can be disassembled and replaced with a compatible feed 4, without replacing the entire antenna, thus reducing operating costs. The position of feed 4 on the antenna can be precisely set at the factory; during field use, the support rod only needs to be bolted to rib 2.

[0040] The locking part can be a pin. A pin hole is provided on the vertical rod 3, and multiple limiting holes are evenly arranged on the rib 2 along its length (the limiting holes are located on the pin hole's movement trajectory). When the pin hole aligns with one of the limiting holes, the pin is inserted into the pin hole after passing through that limiting hole, thus limiting the vertical rod 3. By adjusting the number of limiting holes between adjacent vertical rods 3, the grid spacing can be changed.

[0041] In this embodiment: a first groove 21 extending in the length direction of the rib 2 is provided on the side of the rib 2 facing the vertical rod 3. A slider 31 is provided in the middle of the vertical rod 3. One end of the slider 31 is fixedly connected to the vertical rod 3, and the other end is inserted into the first groove 21 and slides in cooperation with the first groove 21 along the length direction of the rib 2.

[0042] In this design, the first groove 21 serves as a support and guide for the vertical rod 3. The first groove 21 can be a T-groove or a dovetail groove. The slider 31 is adapted to the first groove 21, and the slider 31 can only slide along the extension direction of the first groove 21 within the groove. Alternatively, the slider 31 can be tightly fitted to the first groove 21 (interference fit), so that the outer wall of the slider 31 is in close contact with the inner wall of the first groove 21. Friction restricts the sliding of the slider 31, allowing it to slide only through external force.

[0043] In this embodiment: the two horizontal bars arranged vertically on the supporting outer frame 1 are provided with second sliding grooves 11 on their opposing surfaces, and the second sliding grooves 11 extend along the length of the horizontal bars;

[0044] The two ends of the vertical rod 3 are respectively inserted into the two second sliding grooves 11 and slide along the length of the horizontal bar.

[0045] In this design, the two ends of the vertical rod 3 are inserted into the two second sliding grooves 11 respectively, and the two horizontal bars on the outer frame 1 support the two ends of the vertical rod 3, making the connection of the vertical rod 3 more stable.

[0046] In this embodiment: the first slide groove 21 has a strip hole 22 extending in the same direction as the first slide groove 21 on its inner wall along the vertical direction; the locking part includes a screw 5 and a nut 6 adapted to the screw 5.

[0047] One end of the screw 5 is inserted into the strip hole 22 and fixedly connected to the slider 31 on the vertical rod 3, and the other end is inserted into the nut 6 and connected by thread.

[0048] In this scheme, by tightening the nut 6, the nut 6 and the slider 31 together clamp the inner wall of the first slide groove 21 with the strip hole 22, and the friction force is used to restrict the sliding of the slider 31 to achieve the purpose of locking and limiting.

[0049] In this embodiment: a friction plate 7 is provided between the nut 6 and the rib 2, and a through hole is provided on the friction plate 7. The diameter of the through hole is equal to the outer diameter of the screw 5.

[0050] The end of the screw 5 facing away from the slider 31 is inserted into the nut 6 through the through hole, and the nut 6 pushes the friction plate 7 to abut against the outer surface of the rib 2.

[0051] In this design, the friction plate 7 can be made of rubber, which has a certain elasticity and a high coefficient of friction. The friction plate 7 replaces the nut 6 and abuts against the outer surface of the rib 2. After the nut 6 is tightened, the friction plate 7 will deform to a certain extent and apply pressure to the nut 6, so that the internal thread of the nut 6 and the external thread of the screw 5 remain in abutting state, which can play a certain role in preventing the nut 6 from loosening (similar to a spring washer).

[0052] In this embodiment: the outer surface of the rib 2 with the strip-shaped hole 22 is engraved with scale lines 23, and the scale lines 23 are evenly distributed along the length direction of the rib 2.

[0053] In this scheme, scale line 23 is used to measure the distance between adjacent vertical rods 3. The distance between adjacent vertical rods 3 can be obtained by the difference between two readings at corresponding positions of the two vertical rods 3 on scale line 23, which can help adjust the position of the vertical rods 3.

[0054] In this embodiment: the scale line 23 is located on the side of the strip hole 22 facing away from the vertical rod 3, the friction plate 7 is sharp on the side facing away from the rib 2, and the scale line 23 is located on the movement trajectory of the tip of the friction plate 7;

[0055] The bottom surface of the friction plate 7 is provided with a protrusion 71, which is embedded in the strip hole 22, and the two sides of the protrusion 71 are respectively attached to the two side walls of the strip hole 22 along the width direction of the rib 2.

[0056] In this design, the friction pad 7 is made of a hard material (such as polyetheretherketone). The tip of the friction pad 7 points to the scale line 23, enabling rapid reading of the value on the scale line 23 corresponding to the position of the vertical rod 3. The protrusion 71 is shaped to fit the strip hole 22. When the protrusion 71 is inserted into the strip hole 22, its two sides are in contact with the two side walls of the strip hole 22 along the width direction of the rib 2, allowing the friction pad 7 to slide only along the extension direction of the strip hole 22, always pointing to the scale line 23, making reading faster and more convenient.

[0057] A signal amplifier includes the aforementioned grid antenna and signal amplifier body, wherein the feed 4 of the grid antenna is electrically connected to the signal input terminal of the signal amplifier body via a coaxial cable;

[0058] The signal amplifier body is equipped with:

[0059] The signal processing module is used to filter and amplify the radio frequency signals received by the grid antenna with low noise.

[0060] And a power module for supplying power to the signal processing module and the grid antenna.

[0061] In this solution, the main signal amplifier can be a broadband microwave amplifier module, such as a general-purpose outdoor amplifier with a working frequency range of 900MHz to 6GHz. Specific models include Mini-Circuits' ZKL-2R5G+ (frequency range 0.7-2.5GHz) or ZX60-5916B-S+ (frequency range 0.5-6GHz). These amplifiers feature high gain, low noise figure, and wide bandwidth characteristics, and can be adapted to multi-band signals (such as 2.4GHz, 5.8GHz, and 3.5GHz) covered by the grid antenna by adjusting the spacing of the vertical rods.

[0062] The signal processing module includes a bandpass filter and a low-noise amplifier (LNA). For example, a dedicated filter for the Automatic Dependent Surveillance-Broadcast System (ADS-B) or Long Term Evolution System (LTE) bands can be combined with an HMC1040LP3CE low-noise amplifier (LNA) chip to achieve the filtering and amplification of signals in specific frequency bands.

[0063] The power module can be either a Power over Ethernet (PoE) module or a DC regulated circuit, supporting 12V / 1A input to provide stable power to the signal amplifier body and feed 4. Feed 4 is connected to the input terminal of the signal amplifier body via a coaxial cable (such as RG-58 or LMR-400) to form a complete signal receiving and amplification system, ensuring optimized communication performance across multiple frequency bands.

[0064] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A grid antenna, comprising a supporting frame (1), ribs (2), a plurality of vertical rods (3), and a feed (4), wherein the two ends of the ribs (2) are respectively fixedly connected to two vertical rods arranged horizontally in the supporting frame (1), and the feed (4) is fixedly installed in the middle of the ribs (2) by means of a support rod, characterized in that: The multiple vertical rods (3) are evenly arranged along the length direction of the rib (2), and the middle part of the vertical rod (3) is slidably connected to the rib (2) along the length direction of the rib (2); A locking part is provided between the vertical rod (3) and the rib (2) to restrict the sliding of the vertical rod (3); The rib (2) has a first groove (21) extending in the length direction of the rib (2) on the side facing the vertical rod (3). The vertical rod (3) has a slider (31) in the middle. One end of the slider (31) is fixedly connected to the vertical rod (3), and the other end is inserted into the first groove (21) and slides in the first groove (21) along the length direction of the rib (2). The first slide groove (21) has a strip hole (22) extending in the same direction as the first slide groove (21) on its inner wall along the vertical direction. The locking part includes a screw (5) and a nut (6) that is compatible with the screw (5). One end of the screw (5) is inserted into the strip hole (22) and fixedly connected to the slider (31) on the vertical rod (3), and the other end is inserted into the nut (6) and connected by threaded engagement; A friction plate (7) is provided between the nut (6) and the rib (2), and a through hole is provided on the friction plate (7), the diameter of which is equal to the outer diameter of the screw (5); The screw (5) is inserted into the nut (6) through the through hole at one end facing away from the slider (31), and the friction plate (7) is pushed against the outer surface of the rib (2) by the nut (6).

2. The grid antenna according to claim 1, characterized in that: The two horizontal bars arranged vertically on the supporting outer frame (1) are provided with second sliding grooves (11) on both facing surfaces, and the second sliding grooves (11) extend along the length of the horizontal bars; The two ends of the vertical rod (3) are respectively inserted into the two second sliding grooves (11) and slide along the length of the horizontal bar.

3. The grid antenna according to claim 1, characterized in that: The outer surface of the rib (2) with the strip hole (22) is engraved with scale lines (23), and the scale lines (23) are evenly arranged along the length of the rib (2).

4. The grid antenna according to claim 3, characterized in that: The scale line (23) is located on the side of the strip hole (22) facing away from the vertical rod (3), and the friction plate (7) is sharp on the side facing away from the rib (2). The scale line (23) is located on the movement trajectory of the tip of the friction plate (7). The friction plate (7) has a protrusion (71) on its bottom surface. The protrusion (71) is embedded in the strip hole (22), and the two sides of the protrusion (71) are respectively attached to the two side walls of the strip hole (22) along the width direction of the rib (2).

5. A signal amplifier, comprising a grid antenna and a signal amplifier body as described in any one of claims 1-4, characterized in that: The feed source (4) of the grid antenna is electrically connected to the signal input terminal of the main body of the signal amplifier via a coaxial cable; The signal amplifier body is equipped with: The signal processing module is used to filter and amplify the radio frequency signals received by the grid antenna with low noise. And a power module for supplying power to the signal processing module and the grid antenna.

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