Parallel-feed high-gain omnidirectional antenna
By using stainless steel material radiator brackets and rotatably symmetric antenna oscillators in omnidirectional antennas, combined with metamaterial lens bodies, the problems of poor stability and non-radiative radiation are solved, and higher gain and production are achieved efficiency.
Patent Information
- Application Number
- CN202421036227.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-14
- Publication Date
- 2025-01-03
- Estimated Expiration
- 2034-05-14
AI Technical Summary
Traditional feeding networks have poor stability in omnidirectional antennas, which can easily affect the circularity of the antenna, resulting in weakly oriented radiation.
The radiator bracket with stainless steel material is used as the shielding cover of the feeding network, and the 180° rotational symmetrical setting between the first and second antenna oscillators is optimized in combination with the use of metamaterial lens body. Radiation direction map.
The stability of the feeding network is improved, the non-roundness effect on the omnidirectional antenna is avoided, the gain pattern is optimized, and the production cycle and cost are reduced.
Smart Images
Figure CN222300842U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of communication, in particular to a parallel-fed high-gain omnidirectional antenna. Background Art
[0002] An omnidirectional antenna is one that radiates uniformly at 360° in the horizontal pattern and has a beam with a certain width in the vertical pattern. Generally, the smaller the lobe width, the greater the gain. Omnidirectional antennas are generally used in suburban district stations in mobile communication systems, with a large coverage area. The symmetrical oscillator structure of omnidirectional antennas is simple and easy to implement, and is widely used in engineering systems such as communications, broadcasting, television, radar, navigation, telemetry, and remote sensing. It can work as an antenna alone or as an antenna array element, but the traditional feeding network has poor stability, and the feeding network is easily affected by the out-of-roundness of the omnidirectional antenna. Therefore, a parallel-fed high-gain omnidirectional antenna is provided to solve the problems raised in the above background technology. Utility Model Content
[0003] The purpose of the utility model is to provide a parallel-fed high-gain omnidirectional antenna to solve the problems raised in the above background technology.
[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0005] A parallel-fed high-gain omnidirectional antenna comprises an antenna base plate, an antenna radiator is arranged on the upper side of the antenna base plate, a radiator bracket is arranged inside the antenna radiator, a feed network printed board is arranged inside the radiator bracket, a plurality of metamaterial lenses are arranged on the outer side of the antenna radiator, a first antenna element and a second antenna element are arranged on the feed network printed board, and the first antenna element and the second antenna element are connected by a power divider.
[0006] As a further solution of the present invention: wherein, the antenna radiator and the radiator bracket are cylindrical, and the antenna radiator and the top wall of the radiator bracket are fixedly connected.
[0007] As a further solution of the utility model: wherein, a plurality of metamaterial lenses are arranged in a circular shape on the antenna base plate, wherein the plurality of metamaterial lenses are arranged equidistantly from the antenna radiator.
[0008] As a further solution of the present invention: a feeding connection point is provided between the first antenna element and the second antenna element.
[0009] As a further solution of the utility model: wherein, the surface side of the feed network printed circuit board is coated with anti-corrosion paint, a plug-in block is fixedly connected to the lower side of the feed network printed circuit board, a plurality of rectangular slots are arranged on both sides of the plug-in block, a plug-in slot is opened on the antenna bottom plate, and the rectangular slot is engaged inside the plug-in slot.
[0010] As a further solution of the utility model: wherein, the antenna base plate has multiple plug-in holes, a first arc-shaped slot and a second arc-shaped slot, the metamaterial lens is plugged into the plug-in hole, the bottom side of the antenna radiator is engaged in the second arc-shaped slot, and the radiator bracket is engaged in the first arc-shaped slot.
[0011] Compared with the prior art, the beneficial effects of the utility model are:
[0012] The radiator bracket is made of stainless steel to ensure the strength of the antenna body and can also serve as a shielding cover for the feed network printed circuit board. While ensuring the stability of the feed network, it also avoids the impact of the feed network on the non-circularity of the omnidirectional antenna. The first antenna element and the second antenna element are arranged in 180° rotational symmetry to solve the defect of weak directional radiation of unidirectional bias radiation at the feed point and greatly optimize the gain radiation pattern. The antenna radiator and the radiator bracket are both cylindrical profiles, which are easy to design and process, and have great advantages in production cycle and cost. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0014] Figure 2 This is a schematic diagram of the radiator bracket structure in the utility model;
[0015] Figure 3 This is a schematic diagram of the antenna base structure in the utility model;
[0016] Figure 4 This is a schematic diagram of the structure of the feed network printed board in the utility model;
[0017] The corresponding relationship between the illustrations and component names in the figure is as follows:
[0018] 1. Antenna base plate; 101. Plug-in hole; 102. First arc-shaped slot; 103. Second arc-shaped slot; 104. Plug-in slot; 2. Antenna radiator; 3. Radiator bracket; 4. Feed network printed circuit board; 401. First antenna element; 402. Second antenna element; 403. Anti-corrosion paint; 404. Feed connection point; 407. Rectangular slot; 408. Plug-in block; 5. Metamaterial lens. DETAILED DESCRIPTION
[0019] See also Figures 1 to 4A parallel-fed high-gain omnidirectional antenna comprises an antenna base plate 1, an antenna radiator 2 is arranged on the upper side of the antenna base plate 1, a radiator bracket 3 is arranged inside the antenna radiator 2, a feed network printed board 4 is arranged inside the radiator bracket 3, a plurality of metamaterial lenses 5 are arranged on the outer side of the antenna radiator 2, a first antenna element 401 and a second antenna element 402 are arranged on the feed network printed board 4, and the first antenna element 401 and the second antenna element 402 are connected by a power divider.
[0020] The radiator bracket 3 is made of stainless steel to ensure the strength of the antenna body and can also serve as a shielding cover for the feed network printed circuit board 4. While ensuring the stability of the feed network, it also avoids the influence of the feed network on the non-circularity of the omnidirectional antenna.
[0021] Preferably, the antenna radiator 2 and the radiator support 3 are cylindrical, and the top walls of the antenna radiator 2 and the radiator support 3 are fixedly connected.
[0022] The antenna radiator 2 and the radiator bracket 3 are both cylindrical profiles, which are easy to design and process, and have great advantages in production cycle and cost.
[0023] Preferably, the multiple metamaterial lenses 5 are arranged in a circular shape on the antenna base plate 1 , wherein the multiple metamaterial lenses 5 are arranged equidistantly from the antenna radiator 2 .
[0024] The antenna radiator 2 is located at the center of the metamaterial lens 5, and multiple metamaterial lenses 5 are arranged at intervals. The metamaterial lens 5 has a focusing function, which plays a gain role on the antenna radiator 2. According to different application scenarios, the gain of the omnidirectional antenna can be increased by 2dBi-5dBi by adjusting the size of the metamaterial lens 5.
[0025] Preferably, a feeding connection point 404 is provided between the first antenna element 401 and the second antenna element 402 .
[0026] The first antenna element 401 and the second antenna element 402 may be connected to the antenna radiator 2 via a feeding connection point 404 .
[0027] Preferably, the surface of the feed network printed circuit board 4 is coated with an anti-corrosion paint 403, a plug-in block 408 is fixedly connected to the lower side of the feed network printed circuit board 4, a plurality of rectangular card slots 407 are arranged on both sides of the plug-in block 408, a plug-in slot 104 is opened on the antenna base plate 1, and the rectangular card slot 407 is engaged inside the plug-in slot 104.
[0028] Among them, the anti-corrosion paint 403 can protect the feed network printed circuit board 4 and the first antenna vibrator 401 and the second antenna vibrator 402, preventing the external air and medium from corroding the feed network printed circuit board 4 and the first antenna vibrator 401 and the second antenna vibrator 402.
[0029] Preferably, the antenna base plate 1 has a plurality of plug-in holes 101, a first arc-shaped slot 102 and a second arc-shaped slot 103, the metamaterial lens 5 is plugged into the plug-in hole 101, the bottom side of the antenna radiator 2 is engaged in the second arc-shaped slot 103, and the radiator bracket 3 is engaged in the first arc-shaped slot 102.
[0030] The provided plug hole 101 , the first arc-shaped slot 102 and the second arc-shaped slot 103 facilitate the installation of the metamaterial lens 5 , the antenna radiator 2 and the radiator bracket 3 on the antenna base plate 1 .
[0031] Working principle: The radiator bracket 3 is made of stainless steel to ensure the strength of the antenna body and can also serve as a shielding cover for the feed network printed circuit board 4. While ensuring the stability of the feed network, it also avoids the influence of the feed network on the non-circularity of the omnidirectional antenna; the first antenna element 401 and the second antenna element 402 are arranged in 180° rotational symmetry, which solves the defect of weak directional radiation of unidirectional bias radiation at the feed point and greatly optimizes the gain radiation pattern; the antenna radiator 2 and the radiator bracket 3 are both cylindrical profiles, which are easy to design and process, and have great advantages in production cycle and cost.
[0032] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.
Claims
1. A parallel-fed high-gain omnidirectional antenna, comprising an antenna base plate (1), characterized in that: An antenna radiator (2) is arranged on the upper side of the antenna base plate (1), a radiator bracket (3) is arranged inside the antenna radiator (2), a feed network printed board (4) is arranged inside the radiator bracket (3), a plurality of metamaterial lenses (5) are arranged on the outer side of the antenna radiator (2), a first antenna element (401) and a second antenna element (402) are arranged on the feed network printed board (4), and the first antenna element (401) and the second antenna element (402) are connected by a power divider.
2. A parallel-fed high-gain omnidirectional antenna according to claim 1, characterized in that: The antenna radiator (2) and the radiator support (3) are cylindrical, and the top walls of the antenna radiator (2) and the radiator support (3) are fixedly connected.
3. The parallel-fed high-gain omnidirectional antenna according to claim 1, characterized in that: The plurality of metamaterial lenses (5) are arranged in a circular shape on the antenna base plate (1), wherein the plurality of metamaterial lenses (5) are arranged equidistantly from the antenna radiator (2).
4. The parallel-fed high-gain omnidirectional antenna according to claim 1, characterized in that: A feeding connection point (404) is provided between the first antenna element (401) and the second antenna element (402).
5. The parallel-fed high-gain omnidirectional antenna according to claim 1, characterized in that: The surface of the feed network printed board (4) is coated with an anti-corrosion paint (403); a plug-in block (408) is fixedly connected to the lower side of the feed network printed board (4); a plurality of rectangular slots (407) are provided on both sides of the plug-in block (408); a plug-in slot (104) is provided on the antenna base plate (1); and the rectangular slot (407) is engaged inside the plug-in slot (104).
6. The parallel-fed high-gain omnidirectional antenna according to claim 1, characterized in that: The antenna base plate (1) has a plurality of plug holes (101), a first arc-shaped slot (102) and a second arc-shaped slot (103); the metamaterial lens (5) is plugged into the plug hole (101); the bottom side of the antenna radiator (2) is engaged in the second arc-shaped slot (103); and the radiator bracket (3) is engaged in the first arc-shaped slot (102).