CN215342987U - Dual-polarized omnidirectional ceiling antenna with ultra-wide band - Google Patents
Dual-polarized omnidirectional ceiling antenna with ultra-wide band Download PDFInfo
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- CN215342987U CN215342987U CN202121250672.XU CN202121250672U CN215342987U CN 215342987 U CN215342987 U CN 215342987U CN 202121250672 U CN202121250672 U CN 202121250672U CN 215342987 U CN215342987 U CN 215342987U
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Abstract
The utility model discloses a dual-polarized omnidirectional ceiling antenna with an ultra-wide band, which comprises: the antenna comprises a radiator, an installation bottom plate, an antenna housing and a feeder line; the radiating body comprises a reflecting plate arranged on the mounting base plate, a first radiating oscillator and a second radiating oscillator which are symmetrically arranged on the reflecting plate, and a reflecting plate coupling piece arranged on the reflecting plate and the junction of the two reflecting plates; the reflecting plate and the reflecting plate coupling piece are of an integral structure, the reflecting plate coupling piece is formed by bending the reflecting plate upwards after the reflecting plate is grooved, one end of the feeder line penetrates through the mounting base plate and the reflecting plate, a core line of the feeder line is in feed connection with the first radiation oscillator and the second radiation oscillator, and a copper mesh of the feeder line is connected with the grounding position of the reflecting plate. The ceiling antenna has the advantages of simple structure, concise feed, small size, thin thickness, low cost, easy mass production and good performance index.
Description
Technical Field
The utility model relates to the technical field of mobile communication antennas, in particular to an ultra-wideband dual-polarized omnidirectional ceiling antenna.
Background
An indoor ceiling antenna is an antenna for covering wireless communication indoor signals, and is generally installed on a ceiling or under a cement floor to cover wireless signals in an area with a radius of tens of meters by taking the ceiling as a center. Such as meeting places, hotels, office buildings, movie theaters, residential buildings, etc., require ceiling antennas for coverage. At present, the performance indexes of the existing broadband omnidirectional ceiling antenna in China are not ideal, firstly, the bandwidth of the antenna is not enough, the frequency range is generally 806 MHz-960 MHz/1710 MHz-2700 MHz, and the requirements of low frequency band (600 MHz-806 MHz) and high frequency band (3300-40000 MHz) are lacked; secondly, although the frequency range of part of the broadband ceiling antenna can reach 698 MHz-960 MHz/1710 MHz-2700 MHz, when the standing-wave ratio is below 2.5, the isolation and intermodulation indexes are not ideal, two pairs of antennas interfere with each other, the quality of network coverage of an indoor distribution system is influenced, meanwhile, operators avoid repeated construction of projects for saving investment cost, the antennas are required to work in a frequency band which is as wide as possible, the existing dual-polarized ceiling antenna hardly considers the whole frequency band, and a small part of the electrical performance indexes can meet the requirements of broadband, but the radiation performance indexes are difficult to meet the requirements put forward by the operators; thirdly, the existing broadband dual-polarized ceiling antenna products in China at present mostly adopt a double-cone structure design, the structure is complex, the size is large, the height of the antenna is over 100mm, the implementation cost is high, the feed network is complex, the polarization isolation between the antennas is poor, and the mutual interference between the two antennas is large.
SUMMERY OF THE UTILITY MODEL
Aiming at the problems in the prior art, the utility model aims to provide an ultra-wideband dual-polarized omnidirectional ceiling antenna which is simple in structure, concise in feeding, small in size and good in performance index.
In order to achieve the purpose, the utility model adopts the following technical scheme.
An ultra-wideband dual-polarized omnidirectional ceiling antenna, comprising: the antenna comprises a radiator, an installation bottom plate, an antenna housing and a feeder line; the radiating body comprises a reflecting plate arranged on the mounting base plate, a first radiating oscillator and a second radiating oscillator which are symmetrically arranged on the reflecting plate, and a reflecting plate coupling piece arranged on the reflecting plate and the junction of the two reflecting plates; the reflecting plate and the reflecting plate coupling piece are of an integral structure, the reflecting plate coupling piece is formed by bending the reflecting plate upwards after the reflecting plate is grooved, one end of the feeder line penetrates through the mounting base plate and the reflecting plate, a core line of the feeder line is in feed connection with the first radiation oscillator and the second radiation oscillator, and a copper mesh of the feeder line is connected with the grounding position of the reflecting plate.
More preferably, the reflecting plate ground and the reflecting plate are of an integral structure, and the two reflecting plate ground is a rectangular sheet formed by bending the reflecting plate below the radiation oscillator and below the radiation oscillator.
More preferably, a hollow area in a shape of a letter-convex is hollowed out in the reflection plate, and the hollow area is bent upward to form the reflection plate coupling piece in an inverted L shape.
More preferably, the edges of the first radiation oscillator and the second radiation oscillator are bent downwards to form bent pieces, second hollowed areas are formed in the top surface of the first radiation oscillator and the top surface of the second radiation oscillator, and the second hollowed areas extend to the bent pieces located on the outer sides.
More preferably, the bending piece located at the outer side of the first radiation oscillator and the bending piece located at the outer side of the second radiation oscillator are provided with feeding points for connecting with the feeder line.
More preferably, the bent piece positioned on the front side of the first radiation oscillator and the bent piece positioned on the front side of the second radiation oscillator are respectively provided with an oscillator grounding end, and the oscillator grounding ends are welded with the reflecting plate.
More preferably, the first radiation oscillator and the second radiation oscillator are fixedly mounted on the reflecting plate through oscillator supporting columns.
More preferably, the first radiation oscillator and the second radiation oscillator are distributed at intervals along the left and right direction of the reflection plate, and the two radiation oscillators are distributed in axial symmetry with respect to the center line of the reflection plate.
More preferably, the horizontal distance between the first radiation oscillator and the second radiation oscillator is 65-70 mm.
More preferably, the installation bottom plate and the reflection plate are provided with feeder holes for the feeder to pass through; the feeder line is fixed on the reflecting plate through a line pressing code.
The utility model has the beneficial effects.
The isolation degree of the antenna is improved by symmetrically arranging the radiation oscillators to increase the horizontal distance between the first radiation oscillator and the second radiation oscillator; the reflecting plate coupling piece is arranged to improve the isolation and the standing-wave ratio of the ceiling antenna, the reflecting plate coupling piece is hollowed out of the reflecting plate, the isolation and the standing-wave ratio of the antenna are further improved, and the ceiling antenna is simple in structure, concise in feeding, small in size, thin in thickness, low in cost, easy to produce in scale and good in performance index.
The frequency band of the ceiling antenna is 600-960 MHz and 1710-4000 MHz, the frequency band range can meet the requirement of a wider frequency band than that of indoor coverage of a 5G antenna, and the ceiling antenna is high in consistency, good in performance and easy to install.
Drawings
Fig. 1 is a structural diagram of an ultra-wideband dual-polarized omnidirectional ceiling antenna provided by the utility model.
Fig. 2 is a schematic diagram of an assembly structure of an ultra-wideband dual-polarized omnidirectional ceiling antenna band feeder provided by the present invention.
Fig. 3 is a front view of an ultra-wideband dual-polarized omnidirectional ceiling antenna provided by the present invention.
Fig. 4 is a right side view of the ultra-wideband dual-polarized omnidirectional ceiling antenna provided by the present invention.
Fig. 5 is a standing wave diagram of the ultra-wideband dual-polarized omnidirectional ceiling antenna provided by the present invention.
Fig. 6 is an isolation diagram of the ultra-wideband dual-polarized omnidirectional ceiling antenna provided by the present invention.
Fig. 7 shows the radiation patterns of the ultra-wideband dual-polarized omnidirectional ceiling antenna provided by the utility model in the horizontal plane and the vertical plane of 600 MHz.
Fig. 8 shows the directional patterns of the ultra-wideband dual-polarized omnidirectional ceiling antenna provided by the utility model on the horizontal plane and the vertical plane of 1710 MHz.
Fig. 9 shows the directional diagrams of the ultra-wideband dual-polarized omnidirectional ceiling antenna provided by the utility model in the horizontal plane and the vertical plane of 4000 MHz.
Reference numerals indicate the same.
1: radiation oscillator one, 2: radiation oscillator two, 3: reflecting plate coupling sheet, 4: oscillator support column, 5: reflecting plate, 6: line pressing code, 7: feeder line, 8: mounting a base plate, 9: joint, 10: feeder hole, 11: the reflector plate is grounded, 12: oscillator ground, 13: feed point, 14: antenna cover, 15: screw, 16: and a nut.
Detailed Description
In the description of the present invention, it should be noted that, for the terms of orientation, such as "central", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., it indicates that the orientation and positional relationship shown in the drawings are based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated without limiting the specific scope of protection of the present invention.
Furthermore, if the terms "first" and "second" are used for descriptive purposes only, they are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features. Thus, a definition of "a first" or "a second" feature may explicitly or implicitly include one or more of the feature, and in the description of the utility model, "at least" means one or more unless specifically defined otherwise.
In the present invention, unless otherwise expressly specified or limited, the terms "assembled", "connected", and "connected" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; or may be a mechanical connection; the two elements can be directly connected or connected through an intermediate medium, and the two elements can be communicated with each other. The specific meanings of the above terms in the present invention can be understood by those of ordinary skill in the art according to specific situations.
In the present application, unless otherwise specified or limited, "above" or "below" a first feature may include the first and second features being in direct contact, and may also include the first and second features not being in direct contact but being in contact with each other through another feature therebetween. Also, the first feature being "above," "below," and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or simply an elevation which indicates a level of the first feature being higher than an elevation of the second feature. The first feature being "above", "below" and "beneath" the second feature includes the first feature being directly below or obliquely below the second feature, or merely means that the first feature is at a lower level than the second feature.
The following describes the embodiments of the present invention with reference to the drawings of the specification, so that the technical solutions and the advantages thereof are more clear and clear. The embodiments described below are exemplary and are intended to be illustrative of the utility model, but are not to be construed as limiting the utility model.
As shown in fig. 1 to 4, an ultra-wideband dual-polarized omnidirectional ceiling antenna includes: a radiator, an installation base plate 8, an antenna housing 14 and a feeder 7; the radiating body comprises a reflecting plate 5 arranged on the mounting base plate 8, a first radiating oscillator 1 and a second radiating oscillator 2 which are symmetrically arranged on the reflecting plate 5, and a reflecting plate coupling sheet 3 and a reflecting plate grounding part 11 which are arranged on the reflecting plate 5; the reflecting plate 5 and the reflecting plate coupling piece 3 are of an integral structure, the reflecting plate coupling piece 3 is formed by bending the reflecting plate 5 upwards after the reflecting plate is grooved, one end of the feeder 7 penetrates through the mounting base plate 8 and the reflecting plate 5, a core wire of the feeder 7 is in feed connection with the first radiation oscillator 1 and the second radiation oscillator 2, and a copper mesh of the feeder 7 is connected with a grounding part 11 of the reflecting plate. Like this, the symmetry sets up the interval that increases between two radiation oscillator to improve the isolation of antenna, set up reflecting plate coupling piece 3 and improve the isolation and the standing-wave ratio of ceiling antenna, because reflecting plate coupling piece 3 is hollowed out from reflecting plate 5 and is formed, reduce unnecessary welding and the contact of metal and metal, and then improve the third-order intermodulation of antenna.
In this embodiment, a feeder hole 10 through which the feeder passes is provided on the mounting substrate 8 and the reflection plate 5. The feeder 7 is fixed on the reflecting plate 5 through the press line code 6, so that the loosening of the feeder can be prevented, and the electrical property of the antenna is more stable. Preferably, the copper mesh of the feeder 7 is welded to the grounding part 11 of the transmitting plate, and the core wire of the feeder 7 is welded to the first radiation oscillator 1 and the second radiation oscillator 2.
Particularly, a concave area in a shape of Chinese character 'tu' is hollowed out on the reflector 5, and the hollowed area is bent upwards to form the reflector coupling sheet 3 in an inverted L shape, so that the isolation and standing-wave ratio of the ceiling antenna are improved. Preferably, the height of the reflector coupling sheet 3 is 35-40 mm. The reflecting plate is located at the rear ends of the first radiation oscillator and the second radiation oscillator and is symmetrical about a radiation oscillator symmetry line.
The two reflecting plate grounding parts 11 and the reflecting plate 5 are of an integral structure, and the two reflecting plate grounding parts 11 are rectangular pieces bent from the lower part of the first radiation oscillator 1 and the lower part of the second radiation oscillator 2 by the reflecting plate 5. And small round holes are formed in the rectangular sheet, so that the rectangular sheet can be conveniently welded with a copper mesh of the feeder line. The reflector plate grounding part and the reflector plate are integrally arranged, so that unnecessary welding and metal-to-metal contact are reduced, the third-order intermodulation of the antenna is stable, and the antenna is simple to mount.
The edges of the first radiation oscillator 1 and the second radiation oscillator 2 are bent downwards to form bent pieces, second hollowed areas are formed in the top surface of the first radiation oscillator and the top surface of the second radiation oscillator, and the second hollowed areas extend to the bent pieces located on the outer sides. And a feed point 13 is arranged on the bent sheet positioned on the outer side, and the feed line 7 is welded with the first radiation oscillator and the second radiation oscillator through the feed point 13. The bending plate positioned on the front side is provided with a vibrator grounding end 12, and the vibrator grounding end is connected with the reflecting plate through welding, so that the first radiation vibrator and the second radiation vibrator are well grounded.
It should be noted that the first radiation oscillator 1 and the second radiation oscillator 2 are both fixedly mounted on the reflection plate 5 through oscillator support posts 4, so that a certain distance is provided between the first radiation oscillator, the second radiation oscillator and the reflection plate, and the standing-wave ratio of the antenna is further improved.
In this embodiment, the first radiation oscillator 1 and the second radiation oscillator 2 are distributed at intervals along the left-right direction of the reflection plate 5, and the two radiation oscillators are distributed in an axisymmetric manner with respect to the center line of the reflection plate. The horizontal distance between the first radiation oscillator and the second radiation oscillator is 65-70 mm, and on the basis that the out-of-roundness of the antenna is influenced as little as possible, the distance between the two radiation oscillators is increased, so that the isolation of the antenna is improved.
Further, the reflecting plate 5 is formed by combining a large rectangle and two small rectangles arranged on two sides of the large rectangle. Chamfers are arranged on the upper left side and the upper right side of the reflecting plate, a rectangle is respectively protruded in the front of the first radiation oscillator and the second radiation oscillator, and the length of the rectangle is 25-30 mm.
Further, the mounting base plate 8 is circular, a screw rod 15 is integrally formed at the bottom of the mounting base plate 8, and a nut 16 is assembled on the screw rod 15. The other end of the feeder 7 is welded with a joint 9.
Furthermore, the first radiation oscillator 1 and the second radiation oscillator 2 are of an integrally formed structure. The advantage of adopting the integrated design is that the distance of the polarization units is relatively short, so that better out-of-roundness of the horizontal plane directional diagram can be obtained, and because the multiple frequency bands share one oscillator body, and the realization mode of feed balance is simple, so that the parts required by the antenna are fewer, the manufacturing cost is advantageous, and the requirements of low cost and high performance of equipment operators can be met.
As shown in the figures 5-9, the frequency bands of the ceiling antenna provided by the utility model are 600-960 MHz and 1710-4000 MHz, the frequency band range can meet the requirement of a wider frequency band than the indoor coverage of a 5G antenna, and the ceiling antenna has the advantages of high consistency, good performance and easiness in installation.
It will be appreciated by those skilled in the art from the foregoing description of construction and principles that the utility model is not limited to the specific embodiments described above, and that modifications and substitutions based on the teachings of the art may be made without departing from the scope of the utility model as defined by the appended claims and their equivalents. The details not described in the detailed description are prior art or common general knowledge.
Claims (10)
1. An ultra-wideband dual-polarized omnidirectional ceiling antenna, comprising: the antenna comprises a radiator, an installation bottom plate, an antenna housing and a feeder line; the radiating body comprises a reflecting plate arranged on the mounting base plate, a first radiating oscillator and a second radiating oscillator which are symmetrically arranged on the reflecting plate, and a reflecting plate coupling piece arranged on the reflecting plate and the junction of the two reflecting plates; the reflecting plate and the reflecting plate coupling piece are of an integral structure, the reflecting plate coupling piece is formed by bending the reflecting plate upwards after the reflecting plate is grooved, one end of the feeder line penetrates through the mounting base plate and the reflecting plate, a core line of the feeder line is in feed connection with the first radiation oscillator and the second radiation oscillator, and a copper mesh of the feeder line is connected with the grounding position of the reflecting plate.
2. The ultra-wideband dual-polarized omnidirectional ceiling antenna as recited in claim 1, wherein the ground of the reflector plate and the reflector plate are integrated, and the ground of the two reflector plates is a rectangular sheet bent from the lower part of the radiator element and the lower part of the radiator element.
3. The ultra-wideband dual-polarized omnidirectional ceiling antenna as recited in claim 1, wherein a hollow area with a shape of a Chinese character 'tu' is hollowed out from the reflector, and the hollow area is bent upward to form the reflector coupling sheet with an inverted L shape.
4. The ultra-wideband dual-polarized omnidirectional ceiling antenna is characterized in that the edges of the first radiation oscillator and the second radiation oscillator are bent downwards to form bent pieces, second hollowed areas are formed in the top surface of the first radiation oscillator and the top surface of the second radiation oscillator, and the second hollowed areas extend to the bent pieces located on the outer sides.
5. The ultra-wideband dual-polarized omnidirectional ceiling antenna as recited in claim 4, wherein the bent pieces located on the outer sides of the first and second radiating elements are provided with feeding points for connection with the feeder lines.
6. The ultra-wideband dual-polarized omnidirectional ceiling antenna is characterized in that oscillator grounding ends are arranged on the bent sheet positioned on the front side of the first radiation oscillator and the bent sheet positioned on the front side of the second radiation oscillator, and the oscillator grounding ends are welded with the reflecting plate.
7. The ultra-wideband dual-polarized omnidirectional ceiling antenna as recited in claim 1, wherein the first radiating element and the second radiating element are both fixedly mounted on the reflector plate through element support columns.
8. The ultra-wideband dual-polarized omnidirectional ceiling antenna as recited in claim 1, wherein the first radiating element and the second radiating element are distributed at intervals along the left and right direction of the reflector plate, and the two radiating elements are distributed in axial symmetry with respect to the center line of the reflector plate.
9. The ultra-wideband dual-polarized omnidirectional ceiling antenna as recited in claim 1 or 8, wherein a horizontal distance between the first radiation element and the second radiation element is 65-70 mm.
10. The ultra-wideband dual-polarized omnidirectional ceiling antenna as recited in claim 1, wherein a feeder hole through which the feeder passes is provided on the mounting base plate and the reflector plate; the feeder line is fixed on the reflecting plate through a line pressing code.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121250672.XU CN215342987U (en) | 2021-06-04 | 2021-06-04 | Dual-polarized omnidirectional ceiling antenna with ultra-wide band |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121250672.XU CN215342987U (en) | 2021-06-04 | 2021-06-04 | Dual-polarized omnidirectional ceiling antenna with ultra-wide band |
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| CN215342987U true CN215342987U (en) | 2021-12-28 |
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| CN202121250672.XU Active CN215342987U (en) | 2021-06-04 | 2021-06-04 | Dual-polarized omnidirectional ceiling antenna with ultra-wide band |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115275592A (en) * | 2022-08-01 | 2022-11-01 | 常州仁千电气科技股份有限公司 | Omnidirectional ceiling antenna |
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2021
- 2021-06-04 CN CN202121250672.XU patent/CN215342987U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115275592A (en) * | 2022-08-01 | 2022-11-01 | 常州仁千电气科技股份有限公司 | Omnidirectional ceiling antenna |
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