CN111668597A - Low-profile ultra-wideband dual-polarized radiation unit - Google Patents
Low-profile ultra-wideband dual-polarized radiation unit Download PDFInfo
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- CN111668597A CN111668597A CN202010641649.7A CN202010641649A CN111668597A CN 111668597 A CN111668597 A CN 111668597A CN 202010641649 A CN202010641649 A CN 202010641649A CN 111668597 A CN111668597 A CN 111668597A
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- Prior art keywords
- low
- radiation panel
- wideband dual
- radiating element
- radiation
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
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Abstract
The invention discloses a low-profile ultra-wideband dual-polarized radiation unit which comprises a radiation panel (2), a PCB (printed circuit board) substrate (4) and a plurality of feed sheets (3) connected between the radiation panel (2) and the PCB substrate (4), wherein one ends of the feed sheets (3) are connected with the radiation panel (2) into a whole, and the feed sheets (3) are formed by punching and bending partial materials on the radiation panel (2). According to the low-profile ultra-wideband dual-polarized radiation unit, a part of materials on the radiation panel are punched to form the feed sheet, so that the feed sheet is not required to be welded with the radiation unit, the process is simplified, the assembly is simpler, and the cost is lower.
Description
Technical Field
The invention relates to the technical field of antennas, in particular to a low-profile ultra-wideband dual-polarized radiation unit.
Background
In the mobile communication technology, the modern communication system has a higher and higher attention to various indexes of the base station antenna, especially indexes such as antenna volume, frequency bandwidth, processing technology, processing cost and the like, and the low-profile ultra-wideband base station antenna is a necessary trend in the development of the base station antenna.
The low-profile ultra-wideband base station antenna comprises a radiation unit, wherein the radiation unit in the prior art is generally made of aluminum alloy and zinc alloy through die casting, and the radiation unit of the type can be welded only by plating tin on the surface of the radiation unit, so that the production cost is not reduced, and the environmental pollution is reduced. As shown in fig. 1, a radiation unit in the prior art generally includes a radiation panel 1, a PCB welding base 10, and two PCB baluns 11 connected between the radiation panel 1 and the PCB welding base 10, where the two PCB baluns 11 intersect to form a cross shape, and two ends of the two PCB baluns are respectively inserted into the radiation panel 1 and the PCB welding base 10 and then welded. The radiation unit with the structure has the advantages of complex structure, more welding spots, fussy assembly and high cost.
Disclosure of Invention
The invention aims to provide a low-profile ultra-wideband dual-polarized radiation unit which is simple to assemble, lower in cost and good in electrical performance consistency, aiming at the defects in the prior art.
In order to achieve the above object, the present invention provides a low-profile ultra-wideband dual-polarized radiation unit, which is characterized in that: the feed sheet comprises a radiation panel, a PCB (printed circuit board) substrate and a plurality of feed sheets connected between the radiation panel and the PCB substrate, wherein one end of each feed sheet is connected with the radiation panel into a whole, and the feed sheets are formed by punching and bending part of materials on the radiation panel.
In addition, the invention also provides the following auxiliary technical scheme:
the radiation panel is made of H70 copper strips or tinned copper plates.
The feed tab is perpendicular to the radiating panel.
Reinforcing ribs are punched and formed between the feed sheet and the radiation panel.
And the feeding sheet is punched to form a convex rib.
The ribs are perpendicular to the radiating panel.
At least one circle of convex marks are arranged on the radiation panel.
At least one ring of raised marks is arranged at the outer edge of the radiation panel.
The feeding sheet comprises a main body and a connecting part, and the width of the connecting part is smaller than that of the main body.
The PCB substrate is provided with a plurality of positioning holes corresponding to the feed plates, and the connecting parts are matched and connected in the positioning holes.
Compared with the prior art, the invention has the advantages that:
according to the low-profile ultra-wideband dual-polarized radiation unit, a part of materials on the radiation panel are punched to form the feed sheet, so that the feed sheet is not required to be welded with the radiation unit, the process is simplified, the assembly is simpler, and the cost is lower; in addition, the material of the radiation unit is set to be H70 copper strip or tinned copper plate, so that the surface of the radiation unit does not need to be electroplated again, the process is simplified, the production cost is reduced, and the environmental pollution is reduced. Meanwhile, the low-profile ultra-wideband dual-polarized radiation unit also has the advantages of better beam width convergence and directivity, lower return loss and better isolation of the radiation unit, and better electrical performance consistency.
Drawings
Fig. 1 is a schematic structural diagram of a radiation unit in the prior art.
Fig. 2 is an exploded view of a low-profile ultra-wideband dual-polarized radiating element of the present invention.
Fig. 3 is a bottom view of the radiant panel of the present invention.
Fig. 4 is a schematic view of the structure of the radiation panel of the present invention.
Fig. 5 is a schematic view of another viewing direction of the radiation panel of the present invention.
Fig. 6 is a front view of a radiation panel in the present invention.
Fig. 7 is a simulation of the horizontal plane of the radiating element of fig. 1.
Fig. 8 is a horizontal plane simulation diagram of a low-profile ultra-wideband dual-polarized radiating element of the present invention.
Fig. 9 is a graph of a return loss simulation of the radiating element of fig. 1.
Fig. 10 is a simulation diagram of return loss of the low-profile ultra-wideband dual-polarized radiating element of the present invention.
Fig. 11 is a graph of isolation simulations of the radiating element of fig. 1.
Fig. 12 is a graph showing the isolation simulation of the low-profile ultra-wideband dual-polarized radiating element of the present invention.
Detailed Description
The present invention will be described in further non-limiting detail with reference to the following preferred embodiments and accompanying drawings.
As shown in fig. 2, a low-profile ultra-wideband dual-polarized radiation unit according to a preferred embodiment of the present invention includes a radiation panel 2, four feeding plates 3 integrated with the radiation panel 2, a PCB substrate 4 connected to the feeding plates 3, and a reflection plate 5 connected to the PCB substrate 4.
The four feeding pieces 3 are divided into two groups, as shown in fig. 3, the feeding pieces 3 are respectively illustrated as a first feeding piece 30, a second feeding piece 31, a third feeding piece 32 and a fourth feeding piece 33, wherein the first feeding piece 30 and the third feeding piece 32 are in one group, the second feeding piece 31 and the fourth feeding piece 33 are in one group, and each group of feeding pieces are arranged in a polarization intersecting manner and intersect in a cross shape. The distance between the two sets of feed patches can be adjusted based on the required isolation between the two polarizations.
The feed sheet 3 is formed by stamping a part of material on the radiation panel 2 to be perpendicular to the radiation panel 2, four material holes 20 are formed on the radiation panel 2, and the feed sheet 3 is formed by stamping the material in the material holes 20, or the feed sheet 3 is formed on the radiation panel 2 by stamping, and the material holes 20 are formed. Specifically, the shape of the feed tab 3 may be cut on the radiation panel 2 (the root of the connection between the feed tab 3 and the radiation panel 2 is not broken), and then the feed tab 3 may be bent to be perpendicular to the radiation panel 2.
The feed tab 3 and the width B1 may be different from the width B2 of the feed aperture 20, i.e., the width B1 may be smaller than the width B2. The shapes of the finally formed feed plate 3 and the material hole 20 are not required to be consistent, and trimming can be carried out. The material of the radiation panel 2 is made into the feed sheet 3 by a stamping process, so that the utilization rate of the material can be greatly improved. The material utilization ratio of the radiation panel 2 can reach more than 92%, and at the same time, the weight of the radiation panel 2 is not increased, and even the weight of the radiation panel 2 can be reduced.
As shown in fig. 4, a rib 34 is further stamped between the feed tab 3 and the radiation panel 2, and the rib 34 is depressed from the upper surface of the radiation panel 2 and protrudes from the lower surface; a rib 38 is stamped on the body 36 of the feed tab 3, the rib 38 preferably being disposed vertically (perpendicular to the radiating panel 2). The reinforcing ribs 34 and the ribs 38 can make the strength of the feed plates 3 better, and are less likely to deform, making it easier to maintain the distance between the feed plates 3 and the angle between the feed plates 3 and the radiation panel 2.
The material of the radiation panel 2 is H70 copper strips or tinned copper plates or other materials which can be directly welded in the later period and are free of electroplating, so that the radiation panel 2 can be directly welded, and the surface does not need to be electroplated again.
As shown in fig. 4 and 5, a circle of convex marks 21 is stamped on the portion of the radiation panel 2 close to the outer edge by a stamping and indentation process, and the convex marks 21 can improve the overall strength of the radiation panel 2, effectively improve the section coefficient of the radiation surface, and reduce the deformation of the radiation panel 2; meanwhile, the isolation degree of the radiation unit can be improved. It is understood that the number of the embossed marks 21 is not limited to one turn.
As shown in fig. 2 and fig. 6, the PCB substrate 4 is provided with a power dividing circuit 40 and four positioning holes 41, the four positioning holes 41 correspond to the positions of the four power feeding pieces 3, the bottom of the power feeding piece 3 is provided with a connecting portion 35 with a smaller width, and the connecting portion 35 is inserted into the positioning hole 41 and is soldered to the power dividing circuit 40 to form an electrical connection. SMT wave soldering can be used for welding between the feed sheet 3 and the power dividing circuit 40, automatic assembly and welding can be achieved, and production efficiency is improved.
A step portion 37 is formed between the connecting portion 35 and the main body 36 of the feed tab 3, and the step portion 37 can limit the position, which is beneficial to the control and limit of the height of the radiating element in the assembling process. The effective height H of the low-profile ultra-wideband dual-polarized radiating element can be reduced to 22.8mm, and the balun height lambda of the traditional antenna element design is broken through0/4＝29.4mm(λ0The wavelength of the central frequency point in the designed frequency band in the air), the profile is lower, and the volume is smaller.
The frequency band of the low-profile ultra-wideband dual-polarized radiation unit is 2400-2700 MHz, and the bandwidth ratio in the frequency band is 11.7%.
FIG. 7 shows a simulation diagram of the horizontal plane of the radiating element shown in FIG. 1 in the prior art, wherein the simulation diagram has a beam width of 78-90 degrees and a front-to-back ratio of less than-11 dB. Fig. 8 shows a horizontal plane simulation diagram of the radiation unit of the present invention, after simulation, the beam width is between 65 and 70 °, the front-to-back ratio is less than-26 dB, the beam width convergence of the radiation unit of the present invention is better, and the unit radiation performance directivity is better.
Fig. 9 shows a simulation graph of return loss of the radiating element shown in fig. 1 in the prior art, wherein the simulation data of return loss is less than 1.58. Fig. 10 shows a return loss simulation graph of the radiation unit of the present invention, and the return loss simulation data is less than 1.22, so that the return loss of the radiation unit of the present invention is smaller.
Fig. 11 shows a prior art isolation simulation plot for the radiating element of fig. 1, with isolation simulation data less than-19.2 dB. Fig. 12 shows an isolation simulation diagram of the radiation unit of the present invention, and the isolation simulation data is less than-21.4 dB, which shows that the isolation between polarizations of the radiation unit of the present invention is better, and is improved by 2.2 dB.
According to the low-profile ultra-wideband dual-polarized radiation unit, a part of materials on the radiation panel are punched to form the feed sheet, so that the feed sheet is not required to be welded with the radiation unit, the process is simplified, the assembly is simpler, and the cost is lower; in addition, the material of the radiation unit is set to be H70 copper strip or tinned copper plate, so that the surface of the radiation unit does not need to be electroplated again, the process is simplified, the production cost is reduced, and the environmental pollution is reduced. Meanwhile, the low-profile ultra-wideband dual-polarized radiation unit also has the advantages of better beam width convergence and directivity, lower return loss and better isolation of the radiation unit, and better electrical performance consistency.
It should be noted that the above-mentioned preferred embodiments are merely illustrative of the technical concepts and features of the present invention, and are intended to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.
Claims (10)
1. A low-profile ultra-wideband dual-polarized radiation unit is characterized in that: the antenna comprises a radiation panel (2), a PCB (printed circuit board) substrate (4) and a plurality of feeding pieces (3) connected between the radiation panel (2) and the PCB substrate (4), wherein one ends of the feeding pieces (3) are connected with the radiation panel (2) into a whole, and the feeding pieces (3) are formed by punching and bending partial materials on the radiation panel (2).
2. A low-profile ultra-wideband dual polarized radiating element according to claim 1, characterized in that: the radiation panel (2) is made of H70 copper strips or tinned copper plates.
3. A low-profile ultra-wideband dual polarized radiating element according to claim 1, characterized in that: the feeding sheet (3) is perpendicular to the radiation panel (2).
4. A low-profile ultra-wideband dual polarized radiating element according to any of claims 1 to 3, characterized in that: reinforcing ribs (34) are formed between the feeding sheet (3) and the radiation panel (2) in a punching mode.
5. A low-profile ultra-wideband dual polarized radiating element according to any of claims 1 to 3, characterized in that: the feeding sheet (3) is stamped and formed with a convex rib (34).
6. A low-profile ultra-wideband dual polarized radiating element according to claim 5, characterized in that: the ribs (34) are perpendicular to the radiant panel (2).
7. A low-profile ultra-wideband dual polarized radiating element according to any of claims 1 to 3, characterized in that: the radiation panel (2) is provided with at least one circle of convex marks (21).
8. A low-profile ultra-wideband dual polarized radiating element according to claim 7, characterized in that: at least one ring of raised marks (21) is arranged at the outer edge of the radiation panel (2).
9. A low-profile ultra-wideband dual polarized radiating element according to any of claims 1 to 3, characterized in that: the feeding sheet (3) includes a main body (36) and a connecting portion (35), and a width of the connecting portion (35) is smaller than a width of the main body (36).
10. A low-profile ultra-wideband dual polarized radiating element according to claim 9, characterized in that: the PCB substrate (4) is provided with a plurality of positioning holes (41) corresponding to the feeding sheets (3), and the connecting part (35) is matched and connected in the positioning holes (41).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010641649.7A CN111668597A (en) | 2020-07-06 | 2020-07-06 | Low-profile ultra-wideband dual-polarized radiation unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010641649.7A CN111668597A (en) | 2020-07-06 | 2020-07-06 | Low-profile ultra-wideband dual-polarized radiation unit |
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| Publication Number | Publication Date |
|---|---|
| CN111668597A true CN111668597A (en) | 2020-09-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010641649.7A Pending CN111668597A (en) | 2020-07-06 | 2020-07-06 | Low-profile ultra-wideband dual-polarized radiation unit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022267580A1 (en) * | 2021-06-23 | 2022-12-29 | 京信射频技术(广州)有限公司 | Sheet metal oscillator and antenna |
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2020
- 2020-07-06 CN CN202010641649.7A patent/CN111668597A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022267580A1 (en) * | 2021-06-23 | 2022-12-29 | 京信射频技术(广州)有限公司 | Sheet metal oscillator and antenna |
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