CN102195123A - Secondary beamforming high-power circularly polarized base station antenna - Google Patents
Secondary beamforming high-power circularly polarized base station antenna Download PDFInfo
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- CN102195123A CN102195123A CN2011100731592A CN201110073159A CN102195123A CN 102195123 A CN102195123 A CN 102195123A CN 2011100731592 A CN2011100731592 A CN 2011100731592A CN 201110073159 A CN201110073159 A CN 201110073159A CN 102195123 A CN102195123 A CN 102195123A
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Abstract
The invention discloses a secondary beamforming high-power circularly polarized base station antenna. The secondary beamforming high-power circularly polarized base station antenna comprises two groups of base station communication antenna combinations which are arranged symmetrically; the base station antennae can work at two required frequencies; each pair of base station communication antennae comprises a millimeter wave conical horn antenna, a square-waveguide-to-circular-waveguide transition device, a forming reflection board, a printing grid bar and a forming lens arranged in front of the forming reflection board, wherein the square-waveguide-to-circular-waveguide transition device is arranged below the millimeter wave conical horn antenna; the square-waveguide-to-circular-waveguide transition device is connected with the millimeter wave conical horn antenna; each forming reflection board is arranged above each millimeter wave conical horn antenna; the printing grid bar is arranged on the lower end face of the forming reflection board; the forming lens and the forming reflection board form an angle of 45 +/- 2 degrees; and the forming reflection board and a horizontal plane form an angle of 45 +/- 2 degrees. Therefore, the high-power circularly polarized base station antenna has a simpler and more flexible structure and works stably and reliably; and secondary forming of electromagnetic waves can be realized and the requirement that the shape of a wave beam is flexibly controlled can be met.
Description
Technical field
The present invention relates to a kind of antenna for base station, particularly a kind of high power circular polarization antenna for base station of secondary wave beam forming.
Background technology
The car ground communication system of high-speed railway is a kind of high-capacity and high-speed communication system that just proposed in recent years, is primarily aimed at bullet train and transmits with the short time large-capacity data of ground communication in running.Specific to the communication terminal antenna, require antenna that high efficiency, high power, high-gain are arranged, and the most important thing is to have very high directivity, particularly at the communication system of magnetic-levitation train, so just can not cause very big interference to communication system owing to the electromagnetic field of magnetic-levitation train itself.Aerial array is to guarantee that antenna has a kind of feasible antenna form of high directivity, but a large amount of antenna elements will inevitably cause the increase of the volume and weight of aerial array; Though small-sized antenna microstrip array can guarantee the size and the weight of aerial array, its power and efficient then can't effectively improve.
About above-mentioned technology, patent 200710093945.2 " collection figuration and pole-changing turn to the base station millimeter wave communication antenna of one " proposes effectively to have solved wave beam polarization, figuration and required the high-power problem of antenna with the notion of reflectarray antenna to carrying out figuration and polarization from the wave beam of conical horn outgoing.Yet the antenna structure that this patent proposes is restricted to the figuration degree of wave beam, its wave beam forming is mainly derived from two aspects, one be reflective array on the reflecting plate to figuration effect from the waveform of conical horn outgoing, another one is the compression of the circular arc of reflecting plate to the single direction of wave beam itself.This weak point to the figuration of antenna beam makes the last beam shape that forms of outgoing wave beam fail to reach fully vertical plane wave beam different situations about requiring in different geographical environments that bullet train (particularly magnetic-levitation train) is communicated by letter.
Summary of the invention
The high power circular polarization antenna for base station that the purpose of this invention is to provide the secondary wave beam forming, can effectively avoid the high-speed magnetic suspension train interference of electromagnetic field, structure is simple and flexible more, and working stability is reliable, to the beamwidth design more precisely flexibly, can reach the requirement of flexible control wave harness shape.
In order to achieve the above object, the present invention is achieved by the following technical solutions:
A kind of high power circular polarization antenna for base station of secondary wave beam forming is characterized in, comprises first group of base station communication combination of antennas and second group of base station communication combination of antennas, and these two groups of base station communication combination of antennas are symmetrical arranged; Described every group of base station communication combination of antennas comprises the identical base station communication antenna of some auxiliary structures, and every secondary base station communication antenna all can be worked on two frequencies of needs;
Described every secondary base station communication antenna comprises the millimeter wave conical-horn antenna, square wave guide is to circular waveguide transition apparatus, figuration reflecting plate and print grizzly bar; Wherein,
Described square wave guide is located at the below of millimeter wave conical-horn antenna to the circular waveguide transition apparatus, and this square wave guide interconnects to circular waveguide transition apparatus and millimeter wave conical-horn antenna;
The top correspondence of described millimeter wave conical-horn antenna is provided with a figuration reflecting plate;
Described printing grizzly bar is located at the lower surface of figuration reflecting plate;
This base station communication antenna also comprises the figuration lens that are used for the secondary figuration, and it is arranged on figuration reflecting plate the place ahead, and the electromagnetic wave of outgoing level after the refraction of figuration reflecting plate is injected the figuration lens forward in the described millimeter wave conical-horn antenna.
Described figuration lens are protruding towards the surface of figuration reflecting plate.
Described figuration lens cave in towards the surface of figuration reflecting plate.
Described figuration reflecting plate and horizontal plane be at 45 ± 2 ° inclination angle.
Be arranged on printing grizzly bar on the figuration reflecting plate and the oblique quadrature of printing grizzly bar in second group of base station communication combination of antennas in described first group of base station communication combination of antennas.
Described figuration lens and figuration reflecting plate be at 45 ± 2 ° of inclination angles.
The high power circular polarization antenna for base station of secondary wave beam forming of the present invention compared with prior art has the following advantages:
The present invention is owing to adopt the figuration lens of certain specification, can carry out the wave beam forming second time to outgoing wave from the outgoing of figuration reflecting plate, and these figuration lens and figuration reflecting plate be at 45 ± the 2o angle, to not influence of polarization, not only can keep outgoing wave that certain width is arranged in the horizontal direction, wave beam is extremely narrow in vertical direction can also to realize it, thereby satisfies the specification requirement that forms the 38GHz base station communication antenna with fan-shaped beam, circular polarization characteristics.Make the structure simple and flexible more of high power circular polarization antenna for base station of secondary wave beam forming of the present invention like this, can effectively avoid the interference of high-speed magnetic suspension train electromagnetic field, working stability is reliable, and can reach the requirement of flexible control wave harness shape, make it to reach fully vertical plane wave beam different situations about requiring in different geographical environments of bullet train (particularly magnetic-levitation train) communication.
Description of drawings
Fig. 1 is the stereogram of the high power circular polarization antenna for base station of secondary wave beam forming of the present invention;
Fig. 2 is that the structure master of the high power circular polarization antenna for base station of secondary wave beam forming of the present invention looks schematic diagram;
Fig. 3 is that schematic diagram is looked on the structure left side of the high power circular polarization antenna for base station of secondary wave beam forming of the present invention;
Fig. 4 is that schematic diagram is looked on the structure right side of the high power circular polarization antenna for base station of secondary wave beam forming of the present invention;
Fig. 5 is the figuration reflection board structure schematic diagram of the high power circular polarization antenna for base station of secondary wave beam forming of the present invention;
Fig. 6 is that lens surface is the antenna pattern of projection in the high power circular polarization antenna for base station of secondary wave beam forming of the present invention;
Fig. 7 is that lens surface is the antenna pattern of depression in the high power circular polarization antenna for base station of secondary wave beam forming of the present invention.
Embodiment
Below in conjunction with embodiment the present invention is further elaborated.
See also illustrated in figures 1 and 2, requirement according to the vehicle-ground wireless communication antenna system, base station communication antenna (being the ground base station antenna) is erected at respectively on the track mast along the line with suitable height, and the base station communication antenna on each mast should be able to satisfy the communication of A, two communication networks of B simultaneously.Each communication network need be operated in two antennas of two transmitting-receivings on the frequency respectively.
Therefore, for versatility, the high power circular polarization antenna for base station of secondary wave beam forming of the present invention comprises first group of base station communication combination of antennas and second group of base station communication combination of antennas, and these two groups of base station communication combination of antennas are symmetrical arranged; Every group of base station communication combination of antennas comprises the identical base station communication antenna of some auxiliary structures, and every secondary base station communication antenna all can be worked on two frequencies of needs;
Every secondary base station communication antenna comprises millimeter wave conical-horn antenna 2, square wave guide to circular waveguide transition apparatus 1, figuration reflecting plate 3, printing grizzly bar 4 and figuration lens 5.
Wherein, square wave guide is located at the below of millimeter wave conical-horn antenna 2 to circular waveguide transition apparatus 1, and and millimeter wave conical-horn antenna 2 interconnect; This millimeter wave conical-horn antenna 2 adopts subtended angle and the suitable conical-horn antennas of bore, makes its primary field directional diagram broad and don't ftractures.
Each correspondence of the top of each millimeter wave conical-horn antenna 2 is provided with a figuration reflecting plate 3, as shown in Figure 5, this figuration reflecting plate 3 is made by dielectric material, and itself and ground is at 45 ± 2 ° inclination angle, can guarantee to keep horizontal direction from the outgoing wave of figuration reflecting plate 3 outgoing; (lobe that is azimuth plane is wide for the index request that satisfies base station communication antenna pattern radiation lobe width, the lobe of vertical plane is narrow), the lower surface of this figuration reflecting plate 3 is the arc surface of depression, this arc surface is provided with prints grizzly bar 4, therefore, the broad beam of millimeter wave conical-horn antenna 1 is under the constant situation of azimuth plane, its vertical plane wave beam is pressed narrow, thereby finish the figuration first time to wave beam, and wave beam is transformed to circular polarization by linear polarization, realized the combination of wave beam forming and polarization, simultaneously the direction of wave beam outgoing has been penetrated by upwards being transformed into to the forward direction level; Adopt the advantage of circular polarization wave beam to be: (1) antijamming capability is strong than linear polarization; (2) on the motor vehicle of violent swing or rolling, circular polarized antenna is installed, can under any state, be received information; (3) in television broadcasting or have in the communication of image transmission and adopt circular polarized antenna can overcome ghost image.
See also Fig. 3, shown in Figure 4, in conjunction with Fig. 2, what Fig. 3 represented is the view of the printing grizzly bar 4 of the figuration reflecting plate 3 in left side among Fig. 2, Fig. 4 representative be the view of printing grizzly bar 4 of the figuration reflecting plate 3 on right side among Fig. 2, as seen, the printing grizzly bar 4 oblique quadratures of left and right sides figuration reflecting plate 3, and the rotation direction of two groups of base station communication antennas opposite (being respectively left-hand circular polarization and right-handed circular polarization), two kinds of polarization are isolated mutually, can effectively be overcome reciprocal influence.The rotation direction of the antenna of being faced on base station communication antenna and the vehicle-carrying communication antenna must be consistent.
See also illustrated in figures 1 and 2, under different environment, wave beam to communication antenna requires also different fully, in order to meet the versatility under different wave beams requires, figuration lens 5 have been adopted, these figuration lens 5 are perpendicular to horizontal plane, and be arranged on the place ahead of figuration reflecting plate 3, and with figuration reflecting plate 3 at 45 ± 2o inclination angles, the electromagnetic wave of outgoing level after the refraction of figuration reflecting plate is injected the figuration lens forward in the millimeter wave conical-horn antenna, the center of the height at figuration lens 5 centers and the main lobe of outgoing wave beam is contour, and on horizontal range, be about 11 times of wavelength X apart from the position at millimeter wave conical-horn antenna 1 center, therefore, figuration lens 5 can carry out the secondary figuration to the ripple from 3 outgoing of figuration reflecting plate, realize the different beamwidths that require in the designing requirement.
See also Fig. 6 and shown in Figure 7, the effect of 5 pairs of wave beam formings of figuration lens depends on different curvature, if be the lens of rat, then wave beam is produced the effect of converging, the fan-shaped beam directional diagram that obtains behind the secondary figuration as shown in Figure 6, at this moment, the curve of these figuration lens 5 adopts curvilinear equation y
2=-2 * p * z comes standard, and wherein p is a constant; Otherwise, if lens surface is depression, then wave beam is produced the effect disperse, the fan-shaped beam directional diagram that obtains behind the secondary figuration as shown in Figure 7, at this moment, the curve of these figuration lens 5 adopts curvilinear equation z
2/ 2-y
2/ 2=1 comes standard.Different wave beams, it also is different that figuration requires, thereby can the corresponding curvature of adjusting figuration lens 5.
The material selection polytetrafluoroethylene of figuration lens 5, this material is common dielectric material, have the loss of transmitted wave little, the advantage of low price etc.The figuration lens made from this material 5 can be realized the figuration requirement to wave beam on the one hand, and are also smaller to the loss of the projection ripple that produces behind the figuration secondly because the dielectric constant of this material is less, help to reduce system loss.
In sum, the high power circular polarization antenna for base station of secondary wave beam forming provided by the invention, can effectively avoid the high-speed magnetic suspension train interference of electromagnetic field, to the beamwidth design more precisely flexibly, structure is simple and flexible more, working stability is reliable, can reach vertical plane wave beam different situations about requiring in different geographical environments of bullet train (particularly magnetic-levitation train) communication fully.
Although content of the present invention has been done detailed introduction by above preferred embodiment, will be appreciated that above-mentioned description should not be considered to limitation of the present invention.After those skilled in the art have read foregoing, for multiple modification of the present invention with to substitute all will be conspicuous.Therefore, protection scope of the present invention should be limited to the appended claims.
Claims (7)
1. the high power circular polarization antenna for base station of a secondary wave beam forming is characterized in that,
Comprise first group of base station communication combination of antennas and second group of base station communication combination of antennas, these two groups of base station communication combination of antennas are symmetrical arranged; Described every group of base station communication combination of antennas comprises the identical base station communication antenna of some auxiliary structures, and every secondary base station communication antenna all can be worked on two frequencies of needs;
Described every secondary base station communication antenna comprises millimeter wave conical-horn antenna (2), square wave guide is to circular waveguide transition apparatus (1), figuration reflecting plate (3) and print grizzly bar (4); Wherein,
Described square wave guide is located at the below of millimeter wave conical-horn antenna (2) to circular waveguide transition apparatus (1), and this square wave guide interconnects to circular waveguide transition apparatus (1) and millimeter wave conical-horn antenna (2);
The top correspondence of described millimeter wave conical-horn antenna (2) is provided with a figuration reflecting plate (3);
Described printing grizzly bar (4) is located at the lower surface of figuration reflecting plate (3);
This base station communication antenna also comprises the figuration lens (5) that are used for the secondary figuration, it is arranged on figuration reflecting plate (3) the place ahead, and the electromagnetic wave of outgoing level after the refraction of figuration reflecting plate is injected figuration lens (5) forward in the described millimeter wave conical-horn antenna (2).
2. the high power circular polarization antenna for base station of secondary wave beam forming according to claim 1 is characterized in that the material of described figuration lens (5) is a polytetrafluoroethylene.
3. the high power circular polarization antenna for base station of secondary wave beam forming according to claim 1 is characterized in that described figuration lens (5) are protruding towards the surface of figuration reflecting plate (3).
4. the high power circular polarization antenna for base station of secondary wave beam forming according to claim 1 is characterized in that described figuration lens (5) cave in towards the surface of figuration reflecting plate (3).
5. the high power circular polarization antenna for base station of secondary wave beam forming according to claim 1 is characterized in that, described figuration reflecting plate (3) and horizontal plane be at 45 ± and 2 ° inclination angle.
6. the high power circular polarization antenna for base station of secondary wave beam forming according to claim 1, it is characterized in that, be arranged on the oblique quadrature of printing grizzly bar (4) in printing grizzly bar (4) and the second group of base station communication combination of antennas on the figuration reflecting plate (3) in described first group of base station communication combination of antennas.
7. the high power circular polarization antenna for base station of secondary wave beam forming according to claim 1 is characterized in that, described figuration lens (5) and figuration reflecting plate (3) be at 45 ± and 2 ° of inclination angles.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011100731592A CN102195123A (en) | 2011-03-25 | 2011-03-25 | Secondary beamforming high-power circularly polarized base station antenna |
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| CN2011100731592A CN102195123A (en) | 2011-03-25 | 2011-03-25 | Secondary beamforming high-power circularly polarized base station antenna |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108649336A (en) * | 2018-05-17 | 2018-10-12 | 西安电子科技大学 | A kind of super skin antenna in three squints of bireflectance list transmission |
| CN112103621A (en) * | 2019-06-17 | 2020-12-18 | Oppo广东移动通信有限公司 | Electronic device |
| CN112701437A (en) * | 2020-12-22 | 2021-04-23 | 苏州度风科技有限公司 | Multi-beam forming antenna system applied to wind profile radar |
| CN113745848A (en) * | 2020-05-29 | 2021-12-03 | 华为技术有限公司 | Antenna, use method and communication base station |
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| CN101222088A (en) * | 2007-12-20 | 2008-07-16 | 京信通信系统（中国）有限公司 | Compact intelligent antenna |
| CN101345332A (en) * | 2007-07-13 | 2009-01-14 | 上海磁浮交通工程技术研究中心 | Vehicle-mounted millimeter wave communication antenna integrating figuration and changed polarization |
| CN101345344A (en) * | 2007-07-13 | 2009-01-14 | 上海磁浮交通工程技术研究中心 | Base station millimeter wave communication antenna integrating figuration and changed polarization |
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2011
- 2011-03-25 CN CN2011100731592A patent/CN102195123A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101345332A (en) * | 2007-07-13 | 2009-01-14 | 上海磁浮交通工程技术研究中心 | Vehicle-mounted millimeter wave communication antenna integrating figuration and changed polarization |
| CN101345344A (en) * | 2007-07-13 | 2009-01-14 | 上海磁浮交通工程技术研究中心 | Base station millimeter wave communication antenna integrating figuration and changed polarization |
| CN101222088A (en) * | 2007-12-20 | 2008-07-16 | 京信通信系统（中国）有限公司 | Compact intelligent antenna |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108649336A (en) * | 2018-05-17 | 2018-10-12 | 西安电子科技大学 | A kind of super skin antenna in three squints of bireflectance list transmission |
| CN108649336B (en) * | 2018-05-17 | 2019-10-25 | 西安电子科技大学 | A kind of super skin antenna in three squints of bireflectance list transmission |
| CN112103621A (en) * | 2019-06-17 | 2020-12-18 | Oppo广东移动通信有限公司 | Electronic device |
| CN112103621B (en) * | 2019-06-17 | 2023-05-30 | Oppo广东移动通信有限公司 | Electronic equipment |
| CN113745848A (en) * | 2020-05-29 | 2021-12-03 | 华为技术有限公司 | Antenna, use method and communication base station |
| CN113745848B (en) * | 2020-05-29 | 2024-03-01 | 华为技术有限公司 | Antenna, using method and communication base station |
| CN112701437A (en) * | 2020-12-22 | 2021-04-23 | 苏州度风科技有限公司 | Multi-beam forming antenna system applied to wind profile radar |
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Application publication date: 20110921 |