High and low frequency hybrid antenna
By setting the high-frequency and low-frequency radiation boundaries in the high-low-frequency hybrid antenna and making the height of the low-frequency radiation boundaries higher than the height of the high-frequency radiation boundaries, the problem that existing antennas are susceptible to size limitations and excessively high side height of the reflector plate when improving the front-and-back ratio and beam width is achieved, and better coverage performance is achieved.
Patent Information
- Application Number
- CN202420324269.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-21
- Publication Date
- 2025-03-21
- Estimated Expiration
- 2034-02-21
AI Technical Summary
While improving the front-to-back ratio and horizontal beam width, existing high- and low-frequency hybrid antennas are susceptible to the deterioration of the high-frequency array pattern caused by size limitations and excessively high side height of the reflector plate.
A high-low frequency hybrid antenna is designed, by providing high-frequency radiation boundaries on both sides of each high-frequency array in the length direction, and a low-frequency radiation boundary on both sides of each low-frequency array in the length direction, so that the height of the low-frequency radiation boundary is higher than the height of the high-frequency radiation boundary.
Without changing the overall machine size, the interference between high and low frequency bands is reduced, the horizontal wave width convergence and front-to-back ratio of the antenna are improved, thereby improving the coverage performance of the antenna.
Smart Images
Figure CN222654330U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of mobile communication equipment, and in particular relates to a high-low frequency hybrid antenna. Background Art
[0002] With the rapid development of mobile services, the number of users is growing rapidly, and operators need to increase site density to meet the demand for capacity growth. The mutual influence of each frequency band in a multi-band base station antenna has a great impact on the front-to-back ratio and horizontal beam width. How to improve the front-to-back ratio while reducing the mutual coupling between frequency bands and ensuring that the horizontal beam width does not diverge has become a difficult point.
[0003] At present, in conventional antennas, the adjustment methods include the following: First, adjust the spacing between antenna arrays. Second, adjust the horizontal beam width by adjusting the height, position, shape, etc. of the reflection boundary on both sides of the array. However, the first method is usually limited by the size limitation of the solution itself. The second method has great limitations in high- and low-frequency hybrid antennas, where the excessive height of the side of the reflector will deteriorate the directional pattern of the high-frequency array.
[0004] It can be seen that the antenna in the related art has the problem of being easily limited by size and having low coverage performance. Utility Model Content
[0005] The technical purpose of the utility model is to provide a high- and low-frequency hybrid antenna, which can reduce the interference between high and low frequency bands without changing the overall size of the device, improve the antenna's horizontal bandwidth convergence and front-to-back ratio, and thus improve the antenna's coverage performance.
[0006] In order to solve the above technical problems, the utility model is implemented as follows: a high-low frequency hybrid antenna is provided, comprising a reflector, at least one column of low-frequency arrays and an even number of columns of high-frequency arrays, the low-frequency array and the high-frequency array are both installed on one side surface of the reflector and extend along the length direction of the reflector, the low-frequency array is located between two adjacent columns of the high-frequency arrays, each of the high-frequency arrays is provided with high-frequency radiation boundaries on both sides of the length direction, each of the low-frequency arrays is provided with low-frequency radiation boundaries on both sides of the length direction, and the height of the low-frequency radiation boundary is higher than the height of the high-frequency radiation boundary.
[0007] Furthermore, the high-frequency radiation boundary includes a first boundary formed by bending two side edges of the reflection plate toward the front and a second boundary arranged on the front side of the reflection plate.
[0008] Furthermore, a reinforcement portion bent toward the bottom is provided between the first boundary and the plate surface of the reflective plate.
[0009] Further, the height of the first boundary is 15 mm-30 mm, the height of the second boundary is 10 mm-20 mm, and the heights of the first boundary and the second boundary are equal or unequal.
[0010] Furthermore, a distance between the first boundary and the second boundary and a distance between two adjacent first boundaries are both in the range of 110-120 mm, and a length of the first boundary and the second boundary is equal to a length of the reflector.
[0011] Furthermore, the low-frequency radiation boundary includes a plurality of sub-boundaries spaced apart in the length direction, and the length of the sub-boundaries is 150-250 mm.
[0012] Furthermore, the height of the low-frequency radiation boundary is 50-70 mm, and the interval between adjacent sub-boundaries is 50-70 mm.
[0013] Furthermore, the low-frequency radiation boundary and the reflection plate are installed and connected via an open-mold plastic part.
[0014] Furthermore, the low-frequency array includes a plurality of low-frequency radiation units arranged at equal intervals along the length direction, and the high-frequency array includes a plurality of high-frequency radiation units arranged at equal intervals along the length direction, the spacing between adjacent low-frequency radiation units is 200-300mm, and the spacing between adjacent high-frequency radiation units is 100-150mm.
[0015] Furthermore, the high-frequency radiation boundary is symmetrical with respect to the center of the antenna, and the low-frequency radiation boundary is symmetrical with respect to the center of the antenna.
[0016] Compared with the prior art, the medium-high-low frequency hybrid antenna of the utility model has the following beneficial effects:
[0017] In this solution, high-frequency radiation boundaries are provided on both sides of the length direction of each high-frequency array, low-frequency radiation boundaries are provided on both sides of the length direction of each low-frequency array, and the height of the low-frequency radiation boundary is higher than the height of the high-frequency radiation boundary. This can reduce the interference between the high and low frequency bands without changing the overall size of the device, improve the antenna's horizontal beamwidth convergence and front-to-back ratio, and thus improve the antenna's coverage performance. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the high-low frequency hybrid antenna in the embodiment of the utility model;
[0019] Figure 2 It is a cross-sectional schematic diagram of a high- and low-frequency hybrid antenna in an embodiment of the utility model.
[0020] In the accompanying drawings, each reference numeral represents: 1. reflector; 2. low-frequency array; 3. high-frequency array; 4. high-frequency radiation boundary; 41. first boundary; 42. second boundary; 5. low-frequency radiation boundary; 51. sub-boundary. DETAILED DESCRIPTION
[0021] The embodiments of the utility model are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the utility model, and cannot be understood as limiting the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the utility model.
[0022] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "circumferential", "radial" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.
[0023] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.
[0024] In this embodiment, combined with Figure 1-2 , a high-low frequency hybrid antenna is provided, comprising a reflector 1, at least one column of low frequency arrays 2 and an even number of columns of high frequency arrays 3, the low frequency arrays 2 and the high frequency arrays 3 are both mounted on one side of the reflector 1 and extend along the length direction of the reflector 1, the low frequency array 2 is located between two adjacent columns of high frequency arrays 3, each high frequency array 3 is provided with high frequency radiation boundaries 4 on both sides of the length direction, each low frequency array 2 is provided with low frequency radiation boundaries 5 on both sides of the length direction, and the height of the low frequency radiation boundary 5 is higher than the height of the high frequency radiation boundary 4.
[0025] In the present solution, high-frequency radiation boundaries 4 are provided on both sides of the length direction of each high-frequency array 3, low-frequency radiation boundaries 5 are provided on both sides of the length direction of each low-frequency array 2, and the height of the low-frequency radiation boundary 5 is higher than the height of the high-frequency radiation boundary 4. This can reduce the interference between the high and low frequency bands without changing the overall size of the device, improve the horizontal beamwidth convergence and front-to-back ratio of the antenna, and thus improve the coverage performance of the antenna.
[0026] Furthermore, the high-frequency radiation boundary 4 includes a first boundary 41 formed by bending both sides of the reflection plate 1 toward the front, and a second boundary 42 disposed on the front of the reflection plate 1 .
[0027] Specifically, both side edges of the reflecting plate 1 are bent toward the front side to form two first boundaries 41, that is, the first boundary 41 and the reflecting plate 1 are connected as a whole, and the second boundary 42 can be connected to the board surface of the reflecting plate 1 by sheet metal welding, screw fixing, etc. The second boundary 42 is perpendicular to the board surface of the reflecting plate 1, and the number of settings is determined according to the number of high-frequency arrays 3. In this scheme, the high-frequency array 3 is provided with two columns, so only two second boundaries 42 are provided. When the high-frequency array 3 is provided with four columns, two second boundaries 42 can be added. When the high-frequency array 3 is provided with six columns, four second boundaries 42 are added, wherein one second boundary 42 can be shared between adjacent high-frequency arrays 3. It should be understood that the specific number of second boundaries 42 can be adaptively adjusted according to actual conditions.
[0028] Furthermore, a reinforcement portion bent toward the bottom is provided between the first boundary 41 and the plate surface of the reflector 1. The cross section of the reinforcement portion is an open loop, such as a C-shaped, concave shape, etc., so that when the antenna size is long, the structural strength of the reflector 1 can be increased, and the reverse bending of the reflector 1 is equivalent to increasing the radiation boundary of the antenna backward radiation, reducing the antenna backward radiation intensity, and improving the front-to-back strength ratio.
[0029] Further, the height of the first boundary 41 is 15mm-30mm, the height of the second boundary 42 is 10mm-20mm, the heights of the first boundary 41 and the second boundary 42 are equal or unequal; the spacing between the first boundary 41 and the second boundary 42 and the spacing between two adjacent first boundaries 41 are both 110-120mm, and the length of the first boundary 41 and the second boundary 42 is equal to the length of the reflector 1. Specifically, the height of the first boundary 41 and the second boundary 42, the spacing between the first boundary 41 and the second boundary 42, and the spacing between two adjacent first boundaries 41 can be adaptively adjusted according to actual conditions. For example, the height of the first boundary 41 can be 15mm, 20mm, 25mm, etc., the height of the second boundary 42 can be 12mm, 15mm, 18mm, etc., the spacing between the first boundary 41 and the second boundary 42 and the spacing between two adjacent first boundaries 41 can be 112mm, 115mm, 118mm, etc.
[0030] Furthermore, the low-frequency radiation boundary 5 includes a plurality of sub-boundaries 51 spaced apart in the length direction, and the length of the sub-boundaries 51 is 150-250 mm. The height of the low-frequency radiation boundary 5 is 50-70 mm, and the interval between adjacent sub-boundaries 51 is 50-70 mm.
[0031] Specifically, the low-frequency radiation boundary 5 is aligned with the first boundary 41, and the height can be 55mm, 60mm, 65mm, etc. The length of its sub-boundary 51 is 200mm, and the interval between adjacent sub-boundaries 51 can be 55mm, 60mm, 65mm, etc. The low-frequency radiation boundary 5 and the reflector are connected by an open-mold plastic part. The shape of the plastic part can be set according to the actual situation, and can be fixed to the reflector 1 and the sub-boundary 51 respectively by screws, bonding, etc. As long as the sub-boundary 51 can be fixed and spaced from the high-frequency radiation boundary 4 in height, such a design can reduce the sheet metal cost and reduce the influence of the excessively high low-frequency radiation boundary 5 on the high-frequency array 3. For example, a fixing hole can be set on the sub-boundary 51, and a clamping protrusion matching the fixing hole can be set on the plastic part. In this way, the sub-boundary 51 can be suspended above the low-frequency radiation boundary 5 in the form of a clamping protrusion and a fixing hole.
[0032] Further, the low-frequency array 2 includes a plurality of low-frequency radiation units arranged at equal intervals along the length direction, and the high-frequency array 3 includes a plurality of high-frequency radiation units arranged at equal intervals along the length direction, wherein the high-frequency radiation unit and the field-shaped low-frequency radiation unit can be one of a printed circuit board, a metal die-casting type, a sheet metal forming type, and a patch type, and can be adjusted according to actual conditions, and the spacing between adjacent low-frequency radiation units is 200-300mm, and the spacing between adjacent high-frequency radiation units is 100-150mm. Specifically, the spacing between adjacent low-frequency radiation units can be set to 250mm, and the spacing between adjacent high-frequency radiation units can be set to 115mm. It should be understood that the specific spacing can be adaptively adjusted according to actual conditions, and the numerical adjustment under this concept is also within the protection scope of this application.
[0033] Furthermore, the high-frequency radiation boundary 4 is symmetrical with respect to the center of the antenna, and the low-frequency radiation boundary 5 is symmetrical with respect to the center of the antenna. Specifically, in this embodiment, the low-frequency array 2 is arranged at the midline position of the reflector 1, and the two high-frequency arrays 3 are arranged on both sides of the low-frequency array 2 and symmetrical with respect to the midline of the reflector 1. Correspondingly, the low-frequency radiation boundary 5 and the high-frequency radiation array are arranged on both sides of the low-frequency array 2 and the high-frequency array 3, respectively, and are also symmetrical with respect to the midline of the reflector 1. In some embodiments, when a plurality of low-frequency arrays 2 are arranged, each low-frequency array 2 can be symmetrical with respect to the midline of the reflector 1, and each high-frequency array 3 is located on both sides of the corresponding low-frequency array 2 and is also symmetrical with respect to the midline of the reflector 1. In this way, the high-frequency radiation boundary 4 is arranged symmetrical with respect to the center of the antenna, and the low-frequency radiation boundary 5 is arranged symmetrical with respect to the center of the antenna.
[0034] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A high-low frequency hybrid antenna, characterized in that: It includes a reflecting plate, at least one column of low-frequency arrays and an even number of columns of high-frequency arrays. The low-frequency array and the high-frequency array are both installed on one side of the reflecting plate and extend along the length direction of the reflecting plate. The low-frequency array is located between two adjacent columns of the high-frequency arrays. High-frequency radiation boundaries are provided on both sides of the length direction of each high-frequency array. Low-frequency radiation boundaries are provided on both sides of the length direction of each low-frequency array. The height of the low-frequency radiation boundary is higher than the height of the high-frequency radiation boundary.
2. The high-low frequency hybrid antenna according to claim 1, characterized in that: The high-frequency radiation boundary includes a first boundary formed by bending two side edges of the reflection plate toward the front and a second boundary arranged on the front of the reflection plate.
3. The high-low frequency hybrid antenna according to claim 2, characterized in that: A reinforcing portion bent toward the bottom is provided between the first boundary and the plate surface of the reflector.
4. The high-low frequency hybrid antenna according to claim 2, characterized in that: The height of the first boundary is 15 mm-30 mm, the height of the second boundary is 10 mm-20 mm, and the heights of the first boundary and the second boundary are equal or unequal.
5. The high-low frequency hybrid antenna according to claim 4, characterized in that: The spacing between the first boundary and the second boundary and the spacing between two adjacent first boundaries are both in the range of 110-120 mm, and the length of the first boundary and the second boundary is equal to the length of the reflector.
6. The high-low frequency hybrid antenna according to claim 1, characterized in that: The low-frequency radiation boundary includes a plurality of sub-boundaries spaced apart in the length direction, and the length of the sub-boundaries is 150-250 mm.
7. The high-low frequency hybrid antenna according to claim 6, characterized in that: The height of the low-frequency radiation boundary is 50-70 mm, and the interval between adjacent sub-boundaries is 50-70 mm.
8. The high-low frequency hybrid antenna according to claim 1, characterized in that: The low-frequency radiation boundary and the reflection plate are installed and connected via an open-mold plastic part.
9. The high-low frequency hybrid antenna according to claim 1, characterized in that: The low-frequency array includes a plurality of low-frequency radiation units arranged at equal intervals along the length direction, and the high-frequency array includes a plurality of high-frequency radiation units arranged at equal intervals along the length direction. The spacing between adjacent low-frequency radiation units is 200-300mm, and the spacing between adjacent high-frequency radiation units is 100-150mm.
10. The high-low frequency hybrid antenna according to claim 1, characterized in that: The high-frequency radiation boundary is symmetrical with respect to the center of the antenna, and the low-frequency radiation boundary is symmetrical with respect to the center of the antenna.