High-gain circularly polarized antenna

Abstract

The utility model belongs to the field of circularly polarized antennas, and particularly relates to a high-gain circularly polarized antenna, which comprises an adjusting column, the top of the adjusting column is fixedly connected with a metal bottom plate, the top of the metal bottom plate is fixedly connected with a radio frequency connector, the top of the radio frequency connector is fixedly connected with a chamfered metal bottom sheet, and the chamfered metal bottom sheet is fixedly connected with an antenna. The top of the chamfered metal bottom sheet is fixedly connected with a metal supporting column, the top of the metal supporting column is fixedly connected with a circular metal sheet, and the outer wall of the chamfered metal bottom sheet is fixedly connected with a feed network. According to the high-gain circularly polarized antenna, metal and air media are adopted to replace a traditional high-frequency base material, the production process is simplified, the manufacturing cost is greatly reduced, meanwhile, a double-layer metal sheet structure forms a circularly polarized radiation and feed network, the radiation mode is effectively optimized, the anti-interference capability and the signal receiving stability of the antenna are improved, and the antenna is suitable for large-scale popularization and application. The gain performance is significantly improved, and high-efficiency transmission and reception of signals are ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of circular polarization antennas, in particular to a high-gain circular polarization antenna. Background Art

[0002] In the field of wireless communications, high-gain antennas are one of the key factors to ensure signal transmission quality and coverage. Traditional high-gain antenna designs usually use high-frequency substrates as the core materials for radiation units and feeding networks. High-frequency substrates perform well in high frequency bands due to their excellent electrical properties and stability, and can effectively improve the gain and radiation efficiency of antennas.

[0003] At present, materials such as high-frequency substrates are often expensive, resulting in high manufacturing costs for the overall antenna, which limits its promotion and popularization in certain cost-sensitive applications. In view of this, we propose a high-gain circularly polarized antenna. Utility Model Content

[0004] The main purpose of the utility model is to provide a high-gain circularly polarized antenna, which can solve the problems raised in the above background technology.

[0005] To achieve the above objectives, the high-gain circularly polarized antenna proposed in the utility model includes an adjustment column, the top of which is fixedly connected to a metal base plate, the top of which is fixedly connected to a radio frequency connector, and the top of which is fixedly connected to a cut-angle metal bottom plate.

[0006] Preferably, the top of the cut-angle metal bottom plate is fixedly connected to a metal support column, and the top of the metal support column is fixedly connected to a circular metal sheet, and a circular polarization radiation unit is realized by the cut-angle metal bottom plate, the metal support column and the circular metal sheet.

[0007] Preferably, four groups of the cut-angle metal plates are provided, and the outer wall of the cut-angle metal plates is fixedly connected with a feeding network. The feeding network adopts a microstrip line with air medium, and after multi-stage impedance transformation, a co-radial four-phase feeding network of 0°, 90°, 180°, and 270° is realized to optimize the radiation pattern of the antenna and improve the gain.

[0008] Preferably, the outer wall of the adjustment column is rotatably connected to a mounting plate, the top of the metal bottom plate is detachably connected to a positioning antenna, and the mounting plate is provided with curved snap-in holes, and two groups of curved snap-in holes are provided.

[0009] Preferably, a fixing ring is fixedly connected to the outer wall of the adjusting column, a fixing sleeve is fixedly connected to the bottom of the fixing ring, and a threaded mounting hole is opened on the inner wall of the mounting plate, through which the threaded connection work with the installation auxiliary kit is conveniently completed.

[0010] Preferably, the inner wall of the fixed sleeve is slidably connected with a sliding block, the outer wall of the sliding block is welded with a compression spring, the end of the compression spring away from the sliding block is welded to the inner wall of the fixed sleeve, the sliding block is squeezed away from the fixed sleeve by the compression spring, and when the sliding block slides into the curved clamping hole, the metal base plate is fixed.

[0011] The utility model provides a high-gain circularly polarized antenna, which has the following beneficial effects:

[0012] (1) This high-gain circularly polarized antenna uses metal and air dielectrics to replace traditional high-frequency substrates, which not only simplifies the production process but also greatly reduces manufacturing costs. At the same time, the double-layer metal sheet structure forms a circularly polarized radiation and feeding network, effectively optimizing the radiation pattern, improving the antenna's anti-interference ability and signal reception stability, significantly improving the gain performance, and ensuring efficient signal transmission and reception.

[0013] (2) The high-gain circularly polarized antenna changes the position of the metal base plate above the mounting plate by rotating the adjustment column to adapt to different usage scenarios or needs. At the same time, the design of the compression spring squeezing the sliding block can quickly and firmly fix the metal base plate in the desired position, simplifying the installation and adjustment process. By deciding whether to install accessories such as the positioning antenna, the flexibility of the device is improved, thereby enhancing the practicality of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0015] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the cross-sectional structure of the adjustment column and the mounting plate of the utility model;

[0017] Figure 3 This is a sensitivity relationship diagram of the utility model at different frequencies;

[0018] Figure 4 2D directional diagrams of the utility model at different frequencies;

[0019] Figure 5 3D directional diagrams of the utility model at different frequencies;

[0020] Figure 6This is a diagram showing the amplitude relationship of the utility model at different frequencies.

[0021] Explanation of the accompanying figures: 1. Adjustment column; 2. Metal base plate; 3. RF connector; 4. Cut-angle metal base plate; 5. Metal support column; 6. Round metal sheet; 7. Feed network; 8. Mounting plate; 9. Positioning antenna; 10. Fixing ring; 11. Fixing sleeve; 12. Sliding block; 13. Compression spring; 14. Threaded mounting hole.

[0022] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] See also Figure 1-Figure 6 The utility model proposes a high-gain circularly polarized antenna, including an adjustment column 1, the top of the adjustment column 1 is fixedly connected with a metal bottom plate 2, the metal bottom plate 2 serves as a reflection surface of the antenna, can enhance the radiation intensity of the antenna to the front, and further improve the gain performance of the antenna, the top of the metal bottom plate 2 is fixedly connected with a radio frequency connector 3, the radio frequency connector 3 is used to connect the antenna to a transmission line or a device, and the top of the radio frequency connector 3 is fixedly connected with a cut-angle metal bottom plate 4,

[0025] In the utility model, the top of the cut-angle metal base plate 4 is fixedly connected to a metal support column 5, and the top of the metal support column 5 is fixedly connected to a circular metal sheet 6. The metal support column 5 not only serves to connect the upper and lower layers of metal sheets, but also enhances the structural stability of the entire radiation unit, which helps to maintain the stability of the performance of the antenna in a complex environment. A circularly polarized radiation unit is realized by the cut-angle metal base plate 4, the metal support column 5, and the circular metal sheet 6. The cut-angle metal base plate 4 is provided with four groups, and the outer wall of the cut-angle metal base plate 4 is fixedly connected to a feeding network 7. The feeding network 7 adopts a microstrip line of air medium. After multi-stage impedance transformation, a co-radial four-phase feeding network of 0°, 90°, 180°, and 270° is realized, which optimizes the radiation pattern of the antenna and improves the gain. In combination with the double-layer metal sheet structure and the feeding network, the radiation pattern of the antenna can be optimized, so that the energy can be radiated more concentratedly in a specific direction, thereby improving the gain of the antenna.

[0026] Furthermore, the outer wall of the adjusting column 1 is rotatably connected with a mounting plate 8, and the top of the metal bottom plate 2 is detachably connected with a positioning antenna 9. The mounting plate 8 is provided with a curved snap-in hole, and two groups of curved snap-in holes are provided. When the positioning antenna 9 needs to be installed, the position of the metal bottom plate 2 above the mounting plate 8 is changed by rotating the adjusting column 1, so as to facilitate the adjustment of the position of the metal bottom plate 2. The positioning antenna 9 is an optional component and can be added according to needs. The outer wall of the adjusting column 1 is fixedly connected with a fixing ring 10, and the bottom of the fixing ring 10 is fixedly connected with The fixing sleeve 11 and the inner wall of the mounting plate 8 are provided with a threaded mounting hole 14, through which the threaded mounting hole 14 is convenient for completing the threaded connection with the installation auxiliary kit. The inner wall of the fixing sleeve 11 is slidably connected with a sliding block 12, and a compression spring 13 is welded to the outer wall of the sliding block 12. The end of the compression spring 13 away from the sliding block 12 is welded to the inner wall of the fixing sleeve 11. The sliding block 12 is squeezed away from the fixing sleeve 11 by the compression spring 13. When the sliding block 12 slides into the curved clamping hole, the fixing work of the metal base plate 2 is completed.

[0027] During use, when the antenna receives a feeding signal, the signal first enters the antenna system through the RF connector 3 and is transmitted along the feeding network 7. The feeding network 7 accurately distributes the signal to each radiating unit, that is, the double-layer metal sheet structure composed of the cut-angle metal base plate 4, the metal support column 5 and the circular metal sheet 6. Under the action of the electromagnetic field, an induced current can be generated. When the induced current flows on the radiating unit, it will generate electromagnetic waves and radiate in all directions. Due to the special design of the radiating unit, efficient circularly polarized radiation is achieved. These electromagnetic waves will superimpose on each other in space to form a beam with circular polarization characteristics. The characteristic of the circularly polarized beam is that its electric field vector rotates during propagation, which can reduce the signal attenuation caused by ground reflection or other obstacles, thereby improving the antenna's receiving efficiency and anti-interference ability. The metal base plate 2 serves as the antenna's reflecting surface, which can enhance the antenna's radiation intensity to the front and further improve the antenna's gain performance.

[0028] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A high-gain circularly polarized antenna, comprising an adjustment column (1), characterized in that: The top of the adjustment column (1) is fixedly connected to a metal base plate (2), the top of the metal base plate (2) is fixedly connected to a radio frequency connector (3), and the top of the radio frequency connector (3) is fixedly connected to a cut-angle metal bottom sheet (4).

2. A high-gain circularly polarized antenna according to claim 1, characterized in that: The top of the cut-angle metal bottom sheet (4) is fixedly connected to a metal support column (5), and the top of the metal support column (5) is fixedly connected to a circular metal sheet (6).

3. A high-gain circularly polarized antenna according to claim 2, characterized in that: Four groups of the cut-angle metal bottom sheets (4) are provided, and the outer walls of the cut-angle metal bottom sheets (4) are fixedly connected to a feed network (7).

4. The high-gain circularly polarized antenna according to claim 1, characterized in that: The outer wall of the adjustment column (1) is rotatably connected to a mounting plate (8), and the top of the metal bottom plate (2) is detachably connected to a positioning antenna (9).

5. A high-gain circularly polarized antenna according to claim 4, characterized in that: A fixing ring (10) is fixedly connected to the outer wall of the adjusting column (1), a fixing sleeve (11) is fixedly connected to the bottom of the fixing ring (10), and a threaded mounting hole (14) is provided on the inner wall of the mounting plate (8).

6. A high-gain circularly polarized antenna according to claim 5, characterized in that: The inner wall of the fixed sleeve (11) is slidably connected with a sliding block (12), the outer wall of the sliding block (12) is welded with a compression spring (13), and one end of the compression spring (13) away from the sliding block (12) is welded to the inner wall of the fixed sleeve (11).

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