Folding half-wave oscillator and antenna with same
By designing the flip plate and cross-pass groove structure that folds the half-wave oscillator, the cross-polarization and isolation effect of the antenna are improved, and the problem of poor cross-polarization of narrow-pitch antennas is solved.
Patent Information
- Application Number
- CN202311812496.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-25
- Publication Date
- 2025-06-27
AI Technical Summary
The poor cross-polarization of narrow-pitch antennas leads to problems such as deformity in the array, poor cross-polarization and poor isolation.
A folding half-wave oscillator is designed, through the flip plate and cross-pass groove structure of the metal radiation plate, the first, second, and third, to form a symmetrical cross structure to improve the cross-polarization effect.
It effectively improves the cross-polarization and isolation effect of antennas, and solves the problem of poor cross-polarization of narrow-pitch antennas.
Smart Images
Figure CN120221990A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of antennas, and in particular, to a folded half-wave dipole and an antenna having the same. Background Art
[0002] With the rapid development of mobile communication technologies and applications, the mobile communication network is gradually laid out in the direction of refinement, deep coverage, and base station integration. Especially the application of large-scale array antennas in next-generation mobile communication technologies requires antennas to meet the requirements of miniaturization, light weight, and low cost.
[0003] In related technologies, narrow-spacing antennas have the problem of too large an aperture, which is likely to cause problems such as abnormal array gain, poor cross-polarization, and poor isolation. Summary of the Invention
[0004] The main object of the present invention is to provide a folded half-wave dipole and an antenna having the same, so as to solve the problem of poor cross-polarization of narrow-spacing antennas in related technologies.
[0005] To achieve the above object, according to one aspect of the present invention, a folded half-wave dipole is provided, including: a metal radiation plate; a plurality of folding plates, each folding plate is formed by folding the edge of the metal radiation plate, and each folding plate is provided with a first strip-shaped hole; a plurality of through slots, which are cross-arranged on the metal radiation plate, and each through slot penetrates the opposite surfaces of the metal radiation plate, wherein, a through slot is arranged between two relatively arranged folding plates, and the two first strip-shaped holes on the two relatively arranged folding plates are communicated with both ends of the corresponding through slot; a plurality of second strip-shaped holes, which are arranged on the metal radiation plate, two second strip-shaped holes are cross-arranged on each through slot, and the two second strip-shaped holes on each through slot are symmetrically arranged with respect to the intersection point of the plurality of through slots.
[0006] Further, each through slot and the second strip-shaped hole arranged on the corresponding through slot are vertically arranged.
[0007] Further, the folded half-wave dipole further includes a plurality of third strip-shaped holes, which are arranged on the metal radiation plate, two third strip-shaped holes are cross-arranged on each through slot, and the two third strip-shaped holes on each through slot are symmetrically arranged with respect to the intersection point of the plurality of through slots.
[0008] Further, each through slot and the third strip-shaped hole arranged on the corresponding through slot are vertically arranged, and / or, there is a gap between the adjacent second strip-shaped hole and the third strip-shaped hole arranged on the same through slot.
[0009] Further, the distance between the two second strip-shaped holes on each through slot is less than the distance between the two third strip-shaped holes on each through slot, and the length of the second strip-shaped hole is greater than the length of the third strip-shaped hole.
[0010] Further, the plurality of through slots include a first slot body and a second slot body, the first slot body and the second slot body are vertically arranged, the metal radiation plate is rectangular, the first slot body bisects the metal radiation plate along a first direction of the metal radiation plate, the second slot body bisects the metal radiation plate along a second direction of the metal radiation plate, wherein the first direction and the second direction are vertically arranged.
[0011] Further, the folded half-wave dipole further includes a plurality of fourth strip-shaped holes, and one fourth strip-shaped hole is arranged at the included angle between the first slot body and the second slot body.
[0012] Further, a plurality of included angles are formed between the first slot body and the second slot body, and each fourth strip-shaped hole bisects the corresponding included angle.
[0013] Further, notches are arranged at the corners of the metal radiation plate, the notches include a first opening and a second opening, the first opening and the second opening are communicated, the first opening is located at the corner of the metal radiation plate, and the second opening extends towards the center of the metal radiation plate.
[0014] Further, the end of the second opening far from the first opening is triangular.
[0015] Further, the folded half-wave dipole further includes a feeding balun, the feeding balun is connected to the metal radiation plate, and the feeding balun and the plurality of folding plates are located on the same side of the metal radiation plate.
[0016] According to another aspect of the present invention, an antenna is provided, which includes a plurality of folded half-wave dipoles arranged in an array, and the folded half-wave dipole is the above-mentioned folded half-wave dipole.
[0017] Applying the technical solution of the present invention, the edges of the metal radiation plate are bent to form folding plates, and each folding plate is provided with a first strip-shaped hole. The plurality of through slots are cross-arranged on the metal radiation plate, and each through slot penetrates through the metal radiation plate. Specifically, one through slot is arranged between two opposite folding plates, and the through slot is communicated with two first strip-shaped holes on the corresponding two folding plates. A plurality of second strip-shaped holes are further arranged on the metal radiation plate, two second strip-shaped holes are cross-arranged on each through slot, and the two second strip-shaped holes on each through slot are symmetrically arranged with respect to the intersection point of the plurality of through slots. Through the above settings, the plurality of through slots cut the metal radiation plate into multiple parts, that is, the current can be blocked after being separated, and the metal radiation plate blocked by the through slots is connected by the folding plates, thereby ensuring the integrity of the structure of the folded half-wave dipole. Specifically, since the material of the metal radiation plate is metal, it can be bent to easily process the folding plates, and under the combined action of the plurality of through slots, the plurality of first strip-shaped holes and the plurality of second strip-shaped holes, the cross-polarization effect and the isolation effect can be improved. Therefore, the technical solution of the present application effectively solves the problem of poor cross-polarization of narrow-spacing antennas in the related art. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] The accompanying drawings, which form a part of this application, are used to provide a further understanding of the present invention. The schematic embodiments and descriptions thereof of the present invention are used to explain the present invention and do not unduly limit the present invention. In the drawings:
[0019] Figure 1 A schematic exploded view showing an embodiment of a folded half-wave dipole according to the present invention is shown;
[0020] Figure 2 Shows Figure 1 A side view schematic of the folded half-wave dipole of
[0021] Figure 3 Shows Figure 1 A three-dimensional structure schematic of the metal radiation plate of the folded half-wave dipole of
[0022] Figure 4 Shows Figure 3 A top view schematic of the metal radiation plate of
[0023] Among them, the above-mentioned drawings include the following reference numerals:
[0024] 10. Metal radiation plate; 11. Notch; 111. First opening; 112. Second opening; 20. Folding plate; 21. First strip-shaped hole; 30. Through groove; 31. First groove body; 32. Second groove body; 40. Second strip-shaped hole; 50. Third strip-shaped hole; 60. Fourth strip-shaped hole; 70. Feeding balun. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0025] Hereinafter, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and in no way limits the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.
[0026] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.
[0027] Unless otherwise specifically stated, the relative arrangements, numerical expressions, and numerical values of the components and steps set forth in these embodiments do not limit the scope of the present invention. At the same time, it should be understood that, for the sake of convenience of description, the dimensions of the various parts shown in the drawings are not drawn in actual proportional relationships. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the said technologies, methods, and devices should be regarded as part of the authorization specification. In all the examples shown and discussed here, any specific value should be interpreted as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that: similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.
[0028] In the prior art, the half-wave antenna element is a PCB, and the side of the half-wave antenna element of the PCB cannot be bent. In order to reduce the aperture of the folded half-wave element and reduce the influence between the folded half-wave elements in the array, the material of the metal radiation plate 10 is metal, so that bending can be achieved.
[0029] As Figure 1 , Figure 3 and Figure 4 shown, in this embodiment, the folded half-wave element includes: a metal radiation plate 10, a plurality of folding plates 20, a plurality of through slots 30, and a plurality of second strip-shaped holes 40. Each folding plate 20 is formed by folding the edge of the metal radiation plate 10, and each folding plate 20 is provided with a first strip-shaped hole 21. The plurality of through slots 30 are cross-arranged on the metal radiation plate 10, and each through slot 30 penetrates the opposite surfaces of the metal radiation plate 10. Among them, one through slot 30 is provided between two relatively arranged folding plates 20, and the two first strip-shaped holes 21 on the two relatively arranged folding plates 20 are communicated with the two ends of the corresponding through slot 30. The plurality of second strip-shaped holes 40 are arranged on the metal radiation plate 10, two second strip-shaped holes 40 are cross-arranged on each through slot 30, and the two second strip-shaped holes 40 on each through slot 30 are symmetrically arranged with respect to the intersection point of the plurality of through slots 30.
[0030] Applying the technical solution of this embodiment, the edge of the metal radiation plate 10 is bent to form a folding plate 20, and a first strip-shaped hole 21 is provided on each folding plate 20. A plurality of through grooves 30 are cross-arranged on the metal radiation plate 10, and each through groove 30 penetrates the metal radiation plate 10. Specifically, a through groove 30 is provided between two opposite folding plates 20, and the through groove 30 communicates with two first strip-shaped holes 21 on the corresponding two folding plates 20. A plurality of second strip-shaped holes 40 are also provided on the metal radiation plate 10, two second strip-shaped holes 40 are cross-arranged on each through groove 30, and the two second strip-shaped holes 40 on each through groove 30 are symmetrically arranged with respect to the intersection point of the plurality of through grooves 30. Through the above settings, the plurality of through grooves 30 cut the metal radiation plate 10 into multiple parts, that is, the current can be blocked after being separated, and the metal radiation plate 10 blocked by the through grooves 30 is connected by the folding plates 20, thereby ensuring the integrity of the structure of the folded half-wave dipole. Specifically, since the material of the metal radiation plate 10 is metal, it can be bent to easily process the folding plate 20, and under the combined action of the plurality of through grooves 30, the plurality of first strip-shaped holes 21 and the plurality of second strip-shaped holes 40, the cross-polarization effect and the isolation effect can be improved. Therefore, the technical solution of this embodiment effectively solves the problem of poor cross-polarization of narrow-spacing antennas in the related art.
[0031] Specifically, the first strip-shaped hole 21 extends to the metal radiation plate 10. As Figure 4 shown, a partial structure of the first strip-shaped hole 21 is formed at the side of the metal radiation plate 10.
[0032] The material of the metal radiation plate 10 is copper, silver, gold or a non-magnetic metal alloy.
[0033] In this embodiment, slotting is performed on the metal radiation plate 10, which effectively improves the cross-polarization of the folded half-wave dipole.
[0034] As Figure 1 , Figure 3 and Figure 4 shown, in this embodiment, each through groove 30 and the second strip-shaped hole 40 provided on the corresponding through groove 30 are vertically arranged. The above settings can make the overall structure regular, and at the same time, such settings can not only facilitate processing but also effectively improve the effect of the folded half-wave dipole.
[0035] As Figure 1 , Figure 3 and Figure 4As shown, in this embodiment, the folded half-wave dipole further includes a plurality of third strip holes 50. The plurality of third strip holes 50 are provided on the metal radiation plate 10. Two third strip holes 50 are cross-arranged on each through slot 30. The two third strip holes 50 on each through slot 30 are symmetrically arranged with respect to the intersection point of the plurality of through slots 30. Two third strip holes 50 are provided on each through slot 30, and the two second strip holes 40 are located between the two third strip holes 50, so that the isolation effect can be better.
[0036] Specifically, the ratio of the distance A1 between the adjacent third strip hole 50 and the second strip hole 40 on the same through slot 30 to the distance A2 between the second strip hole 40 and the intersection point of the plurality of through slots 30 satisfies: 0.3 ≤ A1 / A2 ≤ 0.6.
[0037] In this embodiment, the length of the first strip hole 21 is greater than the length of the second strip hole 40, and the length of the first strip hole 21 is greater than the length of the third strip hole 50.
[0038] As Figure 1 、 Figure 3 and Figure 4 As shown, in this embodiment, each through slot 30 and the third strip hole 50 provided on the corresponding through slot 30 are vertically arranged, and the adjacent second strip holes 40 and third strip holes 50 provided on the same through slot 30 are spaced apart. The second strip hole 40 and the third strip hole 50 on the corresponding through slot 30 are parallel to each other, which makes the processing easier.
[0039] In this embodiment, both the second strip hole 40 and the third strip hole 50 are rectangular blocks. Of course, in the embodiments not shown in the figure, the shape of the second strip hole 40 can be wavy, serrated, spindle-shaped or other shapes. Similarly, the shape of the third strip hole 50 can be wavy, serrated, spindle-shaped or other shapes.
[0040] As Figure 1 、 Figure 3 and Figure 4 As shown, in this embodiment, the distance between the two second strip holes 40 on each through slot 30 is less than the distance between the two third strip holes 50 on each through slot 30, and the length of the second strip hole 40 is greater than the length of the third strip hole 50. The above settings can meet the requirements of the folded half-wave dipole.
[0041] Specifically, the ratio between the length of the second strip hole 40 and the length of the third strip hole 50 is between 1.1 and 1.5.
[0042] As Figure 1 、 Figure 3 and Figure 4As shown, in this embodiment, the multiple through slots 30 include a first slot body 31 and a second slot body 32. The first slot body 31 and the second slot body 32 are perpendicularly arranged. The metal radiation plate 10 is rectangular. The first slot body 31 bisects the metal radiation plate 10 along the first direction of the metal radiation plate 10, and the second slot body 32 bisects the metal radiation plate 10 along the second direction of the metal radiation plate 10. Among them, the first direction and the second direction are perpendicularly arranged. The above settings make the structures on the metal radiation plate 10 all symmetric structures, which can ensure the function of the folded half-wave dipole.
[0043] As Figure 1 , Figure 3 and Figure 4 shown, in this embodiment, the widths of the second strip-shaped holes 40, the third strip-shaped holes 50, and the through slots 30 are all the same.
[0044] As Figure 1 , Figure 3 and Figure 4 shown, in this embodiment, the folded half-wave dipole further includes multiple fourth strip-shaped holes 60, and one fourth strip-shaped hole 60 is arranged at the included angle between the first slot body 31 and the second slot body 32. The above setting of the fourth strip-shaped hole 60 can further improve the cross-polarization effect.
[0045] As Figure 1 , Figure 3 and Figure 4 shown, in this embodiment, multiple included angles are formed between the first slot body 31 and the second slot body 32, and each fourth strip-shaped hole 60 bisects the corresponding included angle. The above setting can make the cross-polarization effect and the isolation effect better.
[0046] As Figure 1 , Figure 3 and Figure 4 shown, in this embodiment, notches 11 are arranged at the corners of the metal radiation plate 10. The notches 11 include a first opening 111 and a second opening 112. The first opening 111 and the second opening 112 are connected. The first opening 111 is located at the corner of the metal radiation plate 10, and the second opening 112 extends towards the center of the metal radiation plate 10. The end of the second opening 112 far from the first opening 111 is triangular. The above setting can further meet the requirements of the folded half-wave dipole. Specifically, the second opening 112 faces the intersection point of the multiple through slots 30.
[0047] As Figure 1 and Figure 2As shown, in this embodiment, the folded half-wave dipole further includes a feeding balun 70. The feeding balun 70 is connected to the metal radiation plate 10, and the feeding balun 70 and the plurality of folding plates 20 are located on the same side of the metal radiation plate 10. The setting of the feeding balun 70 can connect the metal radiation plate 10 to the power splitter plate, thereby achieving electrical connection. Specifically, the feeding balun 70 is inserted into the fourth strip-shaped hole 60.
[0048] According to another aspect of the present application, an antenna is provided. The antenna of this embodiment includes a plurality of folded half-wave dipoles arranged in an array, and the folded half-wave dipole is the above-mentioned folded half-wave dipole. The above-mentioned antenna element can avoid in-array gain distortion and improve the effects of cross polarization and isolation.
[0049] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description. Without contrary description, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the protection scope of the present invention; the orientation words "inside, outside" refer to the inside and outside relative to the contour of each component itself.
[0050] For the convenience of description, spatial relative terms such as "above...", "above...", "on the upper surface of...", "above" can be used here to describe the spatial positional relationship between a device or feature shown in the figure and other devices or features. It should be understood that the spatial relative terms are intended to include different orientations in use or operation in addition to the orientation described in the figure for the device. For example, if the device in the drawing is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "beneath other devices or structures" afterwards. Thus, the exemplary term "above..." can include both orientations of "above..." and "below...". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and corresponding explanations are made for the spatial relative descriptions used here.
[0051] In addition, it should be noted that the use of words such as "first", "second" to limit components is only for the convenience of distinguishing the corresponding components. Without additional statement, the above words have no special meaning. Therefore, it cannot be understood as a limitation on the protection scope of the present invention.
[0052] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.
Claims
1. A folded half-wave dipole, characterized in that, Comprising: A metal radiation plate (10); A plurality of folding plates (20), each of the folding plates (20) being formed by folding the edge of the metal radiation plate (10), and each of the folding plates (20) being provided with a first strip-shaped hole (21); A plurality of through grooves (30) which are cross-arranged on the metal radiation plate (10), and each of the through grooves (30) penetrates through the opposite surfaces of the metal radiation plate (10), wherein, one of the through grooves (30) is arranged between two relatively arranged folding plates (20), and the two first strip-shaped holes (21) on the two relatively arranged folding plates (20) are communicated with the two ends of the corresponding through groove (30); A plurality of second strip-shaped holes (40), the plurality of second strip-shaped holes (40) being arranged on the metal radiation plate (10), two of the second strip-shaped holes (40) being cross-arranged on each of the through grooves (30), and the two second strip-shaped holes (40) on each of the through grooves (30) being symmetrically arranged with respect to the intersection point of the plurality of through grooves (30).
2. The folded half-wave dipole according to claim 1, characterized in that, Each of the through grooves (30) and the second strip-shaped holes (40) arranged on the corresponding through groove (30) are vertically arranged.
3. The folded half-wave dipole according to claim 1, wherein The folded half-wave dipole further comprises a plurality of third strip-shaped holes (50), the plurality of third strip-shaped holes (50) being arranged on the metal radiation plate (10), two of the third strip-shaped holes (50) being cross-arranged on each of the through grooves (30), and the two third strip-shaped holes (50) on each of the through grooves (30) being symmetrically arranged with respect to the intersection point of the plurality of through grooves (30).
4. The folded half-wave dipole according to claim 3, characterized in that, Each of the through grooves (30) and the third strip-shaped holes (50) arranged on the corresponding through groove (30) are vertically arranged, and / or, the adjacent second strip-shaped holes (40) and third strip-shaped holes (50) arranged on the same through groove (30) are spaced apart.
5. The folded half-wave dipole according to claim 4, characterized in that, The distance between the two second strip-shaped holes (40) on each of the through grooves (30) is less than the distance between the two third strip-shaped holes (50) on each of the through grooves (30), and the length of the second strip-shaped holes (40) is greater than the length of the third strip-shaped holes (50).
6. The folded half-wave dipole according to claim 1, characterized in that, The plurality of through grooves (30) include a first groove body (31) and a second groove body (32), the first groove body (31) and the second groove body (32) being vertically arranged, the metal radiation plate (10) being rectangular, the first groove body (31) bisecting the metal radiation plate (10) along a first direction of the metal radiation plate (10), the second groove body (32) bisecting the metal radiation plate (10) along a second direction of the metal radiation plate (10), wherein, the first direction and the second direction are vertically arranged.
7. The folded half-wave dipole according to claim 6, wherein, The folded half-wave dipole further comprises a plurality of fourth strip-shaped holes (60), and one of the fourth strip-shaped holes (60) is arranged at the included angle between the first groove body (31) and the second groove body (32).
8. The folded half-wave dipole according to claim 7, characterized in that, A plurality of included angles are formed between the first groove body (31) and the second groove body (32), and each of the fourth strip-shaped holes (60) bisects the corresponding included angle.
9. The folded half-wave dipole according to any one of claims 1 to 8, characterized in that, A notch (11) is provided at a corner of the metal radiation plate (10). The notch (11) includes a first opening (111) and a second opening (112). The first opening (111) and the second opening (112) are communicated. The first opening (111) is located at the corner of the metal radiation plate (10), and the second opening (112) extends towards the center of the metal radiation plate (10).
10. The folded half-wave dipole according to claim 9, wherein, The end of the second opening (112) far from the first opening (111) is triangular.
11. The folded half-wave dipole according to any one of claims 1 to 8, characterized in that, The folded half-wave dipole further includes a feeding balun (70). The feeding balun (70) is connected to the metal radiation plate (10), and the feeding balun (70) and the plurality of folding plates (20) are located on the same side of the metal radiation plate (10).
12. An antenna, comprising a plurality of folded half-wave dipoles arranged in an array, characterized in that, The folded half-wave dipole is the folded half-wave dipole according to any one of claims 1 to 11.