CN212380557U - Low-profile plastic vibrator and 5G base station antenna - Google Patents
Low-profile plastic vibrator and 5G base station antenna Download PDFInfo
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- CN212380557U CN212380557U CN202020830597.3U CN202020830597U CN212380557U CN 212380557 U CN212380557 U CN 212380557U CN 202020830597 U CN202020830597 U CN 202020830597U CN 212380557 U CN212380557 U CN 212380557U
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Abstract
The utility model discloses a low-profile plastic oscillator and 5G base station antenna, the low-profile plastic oscillator includes integrated into one piece's bottom plate, support frame and base plate, the support frame connects base plate and bottom plate, the top surface of base plate is equipped with the metal radiator that is square, the link is equipped with the feed line and the first conductor of looks coupling, the bottom surface of bottom plate is equipped with the second conductor that switches on through first conductor and metal radiator; the center of the metal radiator is provided with a cross groove, the metal radiator is equally divided into four rectangular sheets by the cross groove, each rectangular sheet is provided with a rectangular window, and four corners of the metal radiator are provided with first gaps respectively; one end of the first gap is connected with the corner of the rectangular window close to the first gap, and the other end of the first gap is connected with the tip of the corner of the metal radiator; each end of the cross slot is connected with a second gap, and the second gaps are arranged in parallel to the side edges of the metal radiating bodies close to the second gaps. The height is low, the weight is light, the integration level is high, the electrical property is excellent, and the device is suitable for 5G communication.
Description
Technical Field
The utility model relates to an antenna technology field especially relates to a low section plastic vibrator and 5G basic station antenna.
Background
The large-scale application and popularization of 5G bring huge market demands for the 5G base station antenna industry. Compared with the traditional 2G-4G base station antenna, the 5G base station antenna adopts a large-scale array antenna to realize a Massive MIMO technology and a beam forming technology, thereby greatly increasing the communication speed. However, the increase in the size of the 5G base station antenna array also greatly increases the volume, weight and cost of the antenna array. How to effectively reduce the volume, weight and cost of the base station antenna array is a key issue that must be considered in the design of the base station antenna.
In order to effectively reduce the volume of the antenna array, the height of the element of the base station antenna is also reduced to about one tenth from about a traditional quarter wavelength, which brings great challenges to the design of the base station antenna. In order to reduce the height of the antenna element of the base station, the scheme of reducing the height of the dipole antenna element and adopting a patch antenna is mainly adopted at present. Document 1(R Wu, QX Chu. base-Station Antennas in Wireless Communications: A Low-Profile-Loop, responder-Loaded Broadband antenna. IEEE ANTENNAS & PROPAGAZINE, pp.127-137,2019.) proposes a method for using a resonant structure to reduce the antenna element, however, the height can be reduced to only one fifth of the wavelength of the antenna, and the performance of the antenna is reduced. The patch antenna has the problems of narrow bandwidth and low gain; document 2(XJ Yang, L Ge, JP Wang, and c.y.d.sim.a differential Driven Dual-Polarized High-Gain Stacked Patch antenna and Wireless performance Letters, vol.17, No.7, pp.1181-1185,2018.) proposes a scheme of using a Differentially fed multi-layer Patch antenna to improve the bandwidth and Gain of the Patch antenna scheme. The technical scheme has the defects of high requirements on the process, high processing cost and no contribution to large-scale industrial production.
In order to effectively reduce the weight and the cost of the antenna, the traditional die-casting metal oscillator is not suitable any more, and the 5G base station antenna is mainly in the form of a PCB (printed Circuit Board) and a plastic oscillator. The PCB oscillator is the mainstream form of the current base station antenna, and the plastic oscillator is likely to become the alternative scheme of the PCB oscillator. Compared with a PCB vibrator, the plastic vibrator has the advantages of low cost, high integration level, high product yield and the like. In document 3 (chinese utility model patent CN208460951U), boon applies for an integrated plastic antenna element solution. However, the scheme does not relate to the specific design of the base station antenna element, and does not relate to whether the size and performance requirements of the base station antenna can be met.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that will solve is: a low-profile plastic resonator and a 5G base station antenna having excellent electrical properties are provided.
In order to solve the technical problem, the utility model discloses a technical scheme be: a low-profile plastic vibrator comprises a base plate, a support frame and a base plate which are integrally formed, wherein the support frame is connected with the base plate and the base plate, a square metal radiating body is arranged on the top surface of the base plate, a feed line and a first conductor which are coupled are arranged on the connection frame, and a second conductor which is conducted with the metal radiating body through the first conductor is arranged on the bottom surface of the base plate;
the center of the metal radiating body is provided with a cross slot, the metal radiating body is equally divided into four rectangular sheets by the cross slot, each rectangular sheet is provided with a rectangular window, and four corners of the metal radiating body are provided with first gaps respectively;
one end of the first gap is connected with the corner of the rectangular window close to the first gap, and the other end of the first gap is connected with the tip of the corner of the metal radiator;
each end of the cross slot is connected with a second gap, and the second gaps are arranged in parallel to the side edges of the metal radiating bodies close to the second gaps.
Furthermore, the cross groove comprises two third gaps which are vertically intersected, and each third gap is connected with a group of two second gaps which are parallel to each other.
Further, the junction of the third slit and the second slit is located at the midpoint of the second slit.
Further, the distance from the second slot to the side of the metal radiator close to the second slot is smaller than the distance from the second slot to the rectangular window close to the second slot.
Furthermore, a feed network electrically connected with the feed wiring is arranged on the top surface of the bottom plate.
Further, the support frame is the cross, the support frame includes two backup pads that intersect perpendicularly, two one side of backup pad is equipped with respectively the feed is walked the line, two the opposite side of backup pad is equipped with respectively first conductor, every the bottom of first conductor all has two feet that the interval set up, and first conductor passes through the foot is connected the second conductor.
Furthermore, a feeding area is arranged on the rectangular sheet, an opening corresponding to the feeding area is formed in the substrate, and the first conductor is conducted with the rectangular sheet through the opening.
Furthermore, at least one of the supporting plates is provided with a window through which the feeding wire on the other supporting plate passes.
Furthermore, the bottom plate is provided with a through hole for the first conductor to penetrate through and/or for the bottom plate, the support frame and the substrate to be integrally formed.
In order to solve the technical problem, the utility model discloses still adopt following technical scheme: 5G base station antenna, including above-mentioned low section plastic oscillator.
The beneficial effects of the utility model reside in that: the low-profile plastic vibrator has the advantages of low height, light weight and high integration degree, more importantly, the low-profile plastic vibrator has excellent electrical properties such as standing wave, isolation degree, cross polarization ratio and the like, and is particularly suitable for macro base stations and small base stations in 5G sub-6GHz frequency bands. The base plate, the support frame and the bottom plate in the low-profile plastic vibrator are integrally formed, so that the low-profile plastic vibrator is easy to process, high in production efficiency, low in manufacturing cost and good in product batch consistency.
Drawings
Fig. 1 is a schematic structural diagram of an overall structure of a low-profile plastic vibrator according to a first embodiment of the present invention;
fig. 2 is a top view of a substrate in a low-profile plastic vibrator according to a first embodiment of the present invention;
fig. 3 is a schematic structural diagram of a support frame in a low-profile plastic vibrator according to a first embodiment of the present invention;
fig. 4 is a front view of the support frame in the low-profile plastic vibrator according to the first embodiment of the present invention;
fig. 5 is a rear view of a support frame in a low-profile plastic vibrator according to a first embodiment of the present invention;
fig. 6 is a plan view of a partial region of a bottom plate in a low-profile plastic resonator according to a first embodiment of the present invention.
Description of reference numerals:
1. a base plate; 2. a support frame; 3. a substrate; 4. a metal radiator; 5. feeding wiring; 6. a first conductor; 7. a second conductor; 8. a cross groove; 9. a rectangular sheet; 10. a rectangular window; 11. a first slit; 12. a second slit; 13. a third gap; 14. a support plate; 15. a foot portion; 16. a feeding region; 17. a connecting portion; 18. windowing; 19. a through opening;
D. the distance from the second gap to the side edge of the metal radiator close to the second gap;
H. the distance of the second slot to the rectangular window to which it is close.
Detailed Description
In order to explain the technical content, the objects and the effects of the present invention in detail, the following description is made with reference to the accompanying drawings in combination with the embodiments.
Referring to fig. 1 to 6, a low-profile plastic vibrator includes a base plate 1, a supporting frame 2 and a substrate 3, which are integrally formed, the supporting frame 2 connects the substrate 3 and the base plate 1, a square metal radiator 4 is disposed on a top surface of the substrate 3, a feeding line 5 and a first conductor 6 coupled to each other are disposed on the connecting frame, and a second conductor 7 conducted to the metal radiator 4 through the first conductor 6 is disposed on a bottom surface of the base plate 1;
a cross slot 8 is formed in the center of the metal radiating body 4, the metal radiating body 4 is equally divided into four rectangular sheets 9 by the cross slot 8, a rectangular window 10 is arranged on each rectangular sheet 9, and first gaps 11 are formed in four corners of the metal radiating body 4;
one end of the first slot 11 is connected with the corner of the rectangular window 10 close to the first slot, and the other end of the first slot is connected with the tip of the corner of the metal radiator 4;
each end of the cross slot 8 is connected with a second gap 12, and the second gap 12 is parallel to the side of the metal radiator 4 close to the second gap.
The beneficial effects of the utility model reside in that: the low-profile plastic vibrator has the advantages of low height, light weight and high integration degree, more importantly, the low-profile plastic vibrator has excellent electrical properties such as standing wave, isolation degree, cross polarization ratio and the like in a simulation result, and is particularly suitable for macro base stations and small base stations in a 5G sub-6GHz frequency band. The base plate 3, the support frame 2 and the bottom plate 1 in the low-profile plastic vibrator are integrally formed, so that the low-profile plastic vibrator is easy to process, high in production efficiency, low in manufacturing cost and good in product batch consistency.
Further, the cross slot 8 comprises two third slits 13 intersecting perpendicularly, and each third slit 13 connects a set of two second slits 12 parallel to each other.
Further, the junction of the third slit 13 and the second slit 12 is located at the midpoint of the second slit 12.
As is apparent from the above description, the cross recess 8 is easy to provide.
Further, the distance from the second slot 12 to the side of the metal radiator 4 close to the second slot is smaller than the distance from the second slot 12 to the rectangular window 10 close to the second slot.
As can be seen from the above description, the structure has the advantages of wider bandwidth and superior cross-polarization ratio.
Further, a feed network electrically connected with the feed line 5 is arranged on the top surface of the bottom plate 1.
As can be seen from the above description, the feeding network is provided on the top surface of the bottom plate 1, so that the integration of the low-profile plastic vibrator can be further improved.
Further, the support frame 2 is cross, the support frame 2 includes two perpendicular crossing backup pads 14, two one side of backup pad 14 is equipped with respectively the feed is walked line 5, two the opposite side of backup pad 14 is equipped with respectively first conductor 6, every the bottom of first conductor 6 all has two feet 15 that the interval set up, and first conductor 6 passes through feet 15 are connected second conductor 7.
As can be seen from the above description, the bottom of the first conductor 6 on the supporting board 14 is separated by a gap with a certain width to form two legs 15, and the two legs 15 are connected with the second conductor 7 of the bottom board 1, so as to form the balun structure of the antenna, the impedance matching of the antenna and the isolation between polarizations.
Further, a feeding area 16 is disposed on the rectangular plate 9, an opening corresponding to the feeding area 16 is disposed on the substrate 3, and the first conductor 6 conducts the rectangular plate 9 through the opening.
As can be seen from the above description, the four middle feed areas 16 on the metal radiator 4 are connected to the first conductor 6 layer, so as to conduct the electromagnetic waves from the feed trace 5 to the metal radiator 4 and radiate the electromagnetic waves. Optionally, the feed region 16 is rectangular cut-out.
Further, at least one of the support plates 14 is provided with a window 18 for the feed trace 5 on another support plate 14 to pass through.
As can be seen from the above description, the provision of the fenestration 18 facilitates the processing of the feed trace 5.
Furthermore, the bottom plate 1 is provided with a through hole 19 through which the first conductor 6 passes and/or is used for integrally forming the bottom plate 1, the support frame 2 and the substrate 3.
From the above description, the function of the through opening 19 is: (1) for passing a first conductor 6 to enable it to be connected to a second conductor 7; (2) when the bottom plate 1, the substrate 3 and the supporting frame 2 are integrally formed in an injection molding mode, the through hole 19 can facilitate injection molding.
5G base station antenna, including above-mentioned low section plastic oscillator.
From the above description, it can be seen that the 5G base station antenna has at least all the benefits of the low profile plastic element described above.
Example one
Referring to fig. 1 to 6, a first embodiment of the present invention is: the 5G base station antenna comprises a low-profile plastic oscillator, and please refer to fig. 1 to 3, wherein the low-profile plastic oscillator comprises a base plate 1, a support frame 2 and a substrate 3 which are integrally formed, the support frame 2 is connected with the substrate 3 and the base plate 1, a square metal radiator 4 is arranged on the top surface of the substrate 3, a feed line 5 and a first conductor 6 which are coupled are arranged on the connection frame, and a second conductor 7 which is conducted with the metal radiator 4 through the first conductor 6 is arranged on the bottom surface of the base plate 1; a cross slot 8 is formed in the center of the metal radiating body 4, the metal radiating body 4 is equally divided into four rectangular sheets 9 by the cross slot 8, a rectangular window 10 is arranged on each rectangular sheet 9, and first gaps 11 are formed in four corners of the metal radiating body 4; one end of the first slot 11 is connected with the corner of the rectangular window 10 close to the first slot, and the other end of the first slot is connected with the tip of the corner of the metal radiator 4; each end of the cross slot 8 is connected with a second gap 12, and the second gap 12 is parallel to the side of the metal radiator 4 close to the second gap. In this embodiment, four rectangular windows 10 are arranged in a 2X2 array, and the first and second conductors are respectively plate-shaped or sheet-shaped.
The bottom plate 1, the support frame 2 and the substrate 3 can be integrally formed through 3D printing or injection molding. The bottom plate 1, the support frame 2 and the substrate 3 are made of plastic materials, so that the dielectric constant is stable, and the dielectric loss tangent angle is low.
As shown in fig. 2, in particular, the cross slot 8 includes two third slits 13 intersecting perpendicularly, each third slit 13 connects a set of two second slits 12 parallel to each other, and the connection point of the third slit 13 and the second slit 12 is located at the midpoint of the second slit 12. In terms of shape points, two second slits 12 connecting the same third slit 13 form an i-shaped structure with the third slit 13. Preferably, the intersection point of the two third slits 13 is the central point of the metal radiator 4; the two third gaps 13 are equal in length and width; the four second slits 12 have the same length and the same width.
The distance D from the second slot 12 to the side of the metal radiator 4 that it is close to is smaller than the distance H from the second slot 12 to the rectangular window 10 that it is close to. The structure has the advantages of wide bandwidth and excellent cross polarization ratio.
Referring to fig. 3 and 4, in order to improve the integration of the low-profile plastic vibrator, a feeding network (not shown) electrically connected to the feeding trace 5 is disposed on the top surface of the bottom plate 1. In order to extend the feeding wire 5, the feeding wire 5 disposed on the supporting frame 2 may have a plurality of bending portions, and the number of the bending portions may be set according to actual conditions. It is easy to understand that the feed line 5 is formed by connecting rectangular metal bodies with different widths, the impedance matching of the circuit and the effective feed of the plastic vibrator can be completed by reasonably setting the width and the length of each section of metal body, the standing wave of the plastic vibrator is improved, and the height of the plastic vibrator is reduced.
Referring to fig. 3 to 5, in detail, the supporting frame 2 is cross-shaped, the supporting frame 2 includes two supporting plates 14 that are vertically intersected, one side of each of the two supporting plates 14 is provided with the feeding wire 5, the other side of each of the two supporting plates 14 is provided with the first conductor 6, the bottom end of each of the first conductors 6 is provided with two feet 15 that are arranged at intervals, and the first conductor 6 is connected to the second conductor 7 through the feet 15. It should be understood that the first conductors 6 on each supporting plate 14 are respectively in one-to-one correspondence with the two rectangular sheets 9 located at the diagonal corners. As shown in fig. 2, in more detail, a feeding area 16 is disposed on the rectangular plate 9, an opening (not shown) is disposed on the substrate 3 corresponding to the feeding area 16, and the first conductor 6 is connected to the rectangular plate 9 through the opening, in this embodiment, the feeding area 16 is in a rectangular slot shape, and the rectangular slot is disposed in line with the first slot 11. In order to provide the rectangular plate 9 with enough space to provide the feeding area 16 and improve the electrical performance of the low-profile plastic vibrator, the corner of the rectangular window 10 near the center of the cross-shaped slot 8 is provided with a connecting portion 17 having a triangular shape, and the connecting portion 17 connects two adjacent sides of the rectangular window 10, in other words, the connecting portion 17 fills the corner of the rectangular window 10 near the center of the cross-shaped slot 8. It will be understood that the metal radiator 4 can be provided with the connecting portion 17 when the rectangular window 10 is manufactured.
As shown in fig. 3 and 4, in order to facilitate the arrangement of the feeding trace 5, at least one of the supporting plates 14 is provided with a window 18 for the feeding trace 5 on another supporting plate 14 to pass through. In this embodiment, two of the supporting plates 14 are respectively provided with a window 18 for passing the power feeding trace 5.
Referring to fig. 1 and fig. 6, further, a through hole 19 is formed on the bottom plate 1 for the first conductor 6 to pass through and/or for the bottom plate 1, the supporting frame 2 and the substrate 3 to be integrally formed. In this embodiment, the bottom plate 1 is provided with a rectangular through hole 19 and two triangular through holes 19, and the two triangular through holes 19 have different sizes, wherein the rectangular through hole 19 is used for the first conductor 6 to pass through, so that the first conductor 6 can be connected with the second conductor 7 on the bottom surface of the bottom plate 1; the triangular through-hole 19 is divided into two types according to the size, the smaller one is specially used for facilitating the implementation of the injection molding process, and the larger one plays a role in not only allowing the first conductor 6 to pass but also facilitating the implementation of the injection molding process.
To sum up, the utility model provides a low section plastic oscillator and 5G base station antenna has the advantage that highly low, light in weight and integrated level are high, and more importantly this low section plastic oscillator's standing wave, isolation and cross polarization ratio electricity performance is good such as, is particularly suitable for being used for the macro base station and the little basic station of 5G sub-6GHz frequency channel. The base plate, the support frame and the bottom plate in the low-profile plastic vibrator are integrally formed, so that the low-profile plastic vibrator is easy to process, high in production efficiency, low in manufacturing cost and good in product batch consistency.
The above mentioned is only the embodiment of the present invention, and not the limitation of the patent scope of the present invention, all the equivalent transformations made by the contents of the specification and the drawings, or the direct or indirect application in the related technical field, are included in the patent protection scope of the present invention.
Claims (10)
1. A low-profile plastic vibrator, comprising: the metal radiator comprises a base plate, a support frame and a base plate which are integrally formed, wherein the support frame is connected with the base plate and the base plate, a square metal radiator body is arranged on the top surface of the base plate, a feed line and a first conductor which are coupled are arranged on the connection frame, and a second conductor which is conducted with the metal radiator body through the first conductor is arranged on the bottom surface of the base plate;
the center of the metal radiating body is provided with a cross slot, the metal radiating body is equally divided into four rectangular sheets by the cross slot, each rectangular sheet is provided with a rectangular window, and four corners of the metal radiating body are provided with first gaps respectively;
one end of the first gap is connected with the corner of the rectangular window close to the first gap, and the other end of the first gap is connected with the tip of the corner of the metal radiator;
each end of the cross slot is connected with a second gap, and the second gaps are arranged in parallel to the side edges of the metal radiating bodies close to the second gaps.
2. The low profile plastic vibrator of claim 1, wherein: the cross groove comprises two third gaps which are vertically intersected, and each third gap is connected with a group of two second gaps which are parallel to each other.
3. The low profile plastic vibrator of claim 2, wherein: the joint of the third gap and the second gap is positioned at the midpoint of the second gap.
4. The low profile plastic vibrator of claim 1, wherein: the distance from the second gap to the side edge of the metal radiator close to the second gap is smaller than the distance from the second gap to the rectangular window close to the second gap.
5. The low profile plastic vibrator of claim 1, wherein: and the top surface of the bottom plate is provided with a feed network electrically connected with the feed wiring.
6. The low profile plastic vibrator of claim 1, wherein: the support frame is the cross, the support frame includes two backup pads that intersect perpendicularly, two one side of backup pad is equipped with respectively the feed is walked the line, two the opposite side of backup pad is equipped with respectively first conductor, every the bottom of first conductor all has two feet that the interval set up, and first conductor passes through the foot is connected the second conductor.
7. The low profile plastic vibrator of claim 6, wherein: the rectangular sheet is provided with a feeding area, the substrate is provided with an opening corresponding to the feeding area, and the first conductor is communicated with the rectangular sheet through the opening.
8. The low profile plastic vibrator of claim 6, wherein: at least one of the supporting plates is provided with a window through which the feed wire on the other supporting plate passes.
9. The low profile plastic vibrator of claim 1, wherein: the bottom plate is provided with a through hole for the first conductor to penetrate through and/or for the bottom plate, the support frame and the substrate to be integrally formed.
10.5G base station antenna, its characterized in that: comprising a low profile plastic vibrator according to any of claims 1-9.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020830597.3U CN212380557U (en) | 2020-05-18 | 2020-05-18 | Low-profile plastic vibrator and 5G base station antenna |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020830597.3U CN212380557U (en) | 2020-05-18 | 2020-05-18 | Low-profile plastic vibrator and 5G base station antenna |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111668591A (en) * | 2020-05-18 | 2020-09-15 | 深圳市信维通信股份有限公司 | Low-profile plastic vibrator and 5G base station antenna |
| CN113224510A (en) * | 2021-04-12 | 2021-08-06 | 华南理工大学 | 5G low-profile broadband slot patch antenna |
-
2020
- 2020-05-18 CN CN202020830597.3U patent/CN212380557U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111668591A (en) * | 2020-05-18 | 2020-09-15 | 深圳市信维通信股份有限公司 | Low-profile plastic vibrator and 5G base station antenna |
| CN113224510A (en) * | 2021-04-12 | 2021-08-06 | 华南理工大学 | 5G low-profile broadband slot patch antenna |
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