CN105119060A - Dual-polarized omnidirectional antenna and antenna reflecting plate thereof - Google Patents
Dual-polarized omnidirectional antenna and antenna reflecting plate thereof Download PDFInfo
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- CN105119060A CN105119060A CN201510508941.0A CN201510508941A CN105119060A CN 105119060 A CN105119060 A CN 105119060A CN 201510508941 A CN201510508941 A CN 201510508941A CN 105119060 A CN105119060 A CN 105119060A
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Abstract
The invention discloses an antenna reflecting plate comprising a base plate and side plates connected with both sides of the base plate, wherein obtuse angles are formed between the front side of the base plate and the side plates. An intersection angle between the two side plates is 360/n degree, wherein n is more than or equal to 3. A dual-polarized omnidirectional antenna comprises multiple antenna reflecting plates and multiple radiating elements arranged on the antenna reflecting plates, wherein the antenna reflecting plates are the antenna reflecting plates described above. The antenna reflecting plates of the dual-polarized omnidirectional antenna effectively decrease the size of the dual-polarized omnidirectional antenna and do not influence the radiation performance of the dual-polarized omnidirectional antenna.
Description
Technical field
The present invention relates to a kind of mobile communication antenna, particularly relate to a kind of dual-polarization omnidirectional antenna, and be applied in the antenna-reflected plate in this antenna.
Background technology
The difficult problems such as multiband that mobile communication system brings, multi-modulation scheme, interference be complicated are shared in order to solve multi-operator, and meeting people's requirement more and more harsher to electromagnetic pollution tolerance, the demand of the Bipolarization antenna for base station of broadband, high-gain, miniaturization, high-isolation is more urgent.
Omnidirectional antenna has omnidirectional radiation, sets up advantage easily, is no matter the quick layout website at initial stage of building a station in mobile communication system, or all has special purposes in the blind mending-leakage of looking in network optimization later stage.Omni-directional antenna for base station in the past turns to master with one pole, but Modern Mobile Communications Systems particularly 4GLTE system needs MIMO (multichannel transmitting-receiving) technology, although use two traditional single-polarized antennas to adopt the mode of space diversity to realize, but this diversity mode needs the area of website large, property is coordinated difficult, property cost is high, large to the visual impact of environment.
In prior art, patent CN102447163 proposes a form forming circle battle array by taper oscillator and four horizontal polarization oscillators and realizes, and wherein taper Harmonic Oscillators perpendicular polarization function, the oscillator circle battle array of four horizontal polarizations realizes horizontal polarization function.This technology has representative widely to current dual-polarization omnidirectional antenna technology, the function of vertical/horizontal polarization can be realized, its shortcoming is: the size of this kind of antenna is larger, gain is at about 2dBi, indoor distributed system can only be used for the less demanding situation of antenna gain, cannot realize and feedback group battle array is designed to the outdoor base station antenna of high-gain.Patent CN102142620 gives the another kind of mode realizing dual-polarization omnidirectional antenna, namely one of them polarization adopts the mode of slot electromagnetic coupling to realize horizontal or vertical polarization function, although the problem that size is bigger than normal can be solved, handheld terminal obtains application, but the frequency band of slot antenna is narrower, can not realize the broadband requirement required by antenna for base station, its also feed yet more difficult realization, is not used in the practical value of high-gain omnidirectional outdoor base station antenna.US6094166 gives a kind of group battle array mode forming high-gain omni-directional antenna, namely adopts in the form circumferentially organizing battle array, by controlling the width Entropy density deviation of each radiating element in array, can obtain orientation or omnidirectional's function of array.Although this technology discloses the implementation of high-gain omni-directional antenna, do not provide the technology how realizing vertical/horizontal or ± 45 ° of dual-polarization omnidirectional antennas.US8031129B2 gives a kind of vertical/horizontal polarization high-gain omni-directional antenna, its perpendicular polarization unit composition circle battle array, and horizontal polarization radiating element is placed in the center of circle.This technology has two shortcomings, and one is influencing each other in order to avoid two kinds of polarization, and antenna size can require larger; Although two is to make vertical/horizontal poliarizing antenna, can not realize the requirement of mobile communication mainstay ± 45 ° of dual polarized antennas.
In sum, existing technology can not solve the technical barrier of broadband, high-gain, compact, high omnidirectional's dual polarized antenna of isolating.
Summary of the invention
Object of the present invention is intended to solve above-mentioned technical bottleneck, provides a kind of dual-polarization omnidirectional antenna of compact conformation, and is applied in the antenna-reflected plate in this antenna.
For reaching above technical purpose, the technical solution used in the present invention is as follows:
A kind of antenna-reflected plate, it comprise base plate and be connected to described base plate both sides and with the obtuse-angulate side plate of front shape of this base plate, the angle between described two side plates is 360 °/n, n >=3.
Preferably, the angle between described two side plates is 120 °.
Further, feeding network on this antenna-reflected plate of optimal design-aside: this antenna-reflected plate is provided with feeding network, described feeding network comprises the first power splitter being arranged on described base plate front and the first radio frequency cable group of being drawn by this first power splitter, and is arranged on second power splitter at the described base plate back side and the second radio frequency cable group by the extraction of this second power splitter.
Selectively, described feeding network also comprises the 3rd power splitter that is connected with described first power splitter and the second power splitter and the 3rd radio frequency cable group for connecting.
Preferably, the width of described base plate is 20 ~ 100mm.More preferably, the width of described base plate is 30mm.
A kind of dual-polarization omnidirectional antenna, it comprises multiple antenna-reflected plate and multiple radiating element be arranged on described antenna-reflected plate, and it adopts foregoing antenna-reflected plate.
For realizing the present invention, described multiple antenna-reflected plate carries out circumferential array centered by the axis of the longitudinally of antenna, and the side plate belonging to adjacent described antenna-reflected plate is respectively close to each other.
Preferably, described antenna comprises 3 described antenna-reflected plates.
Selectively, described multiple radiating element carries out linear array along longitudinally respectively on the base plate of described each antenna-reflected plate.
Compared with prior art, the present invention has following advantage:
(1) dual-polarization omnidirectional antenna of the present invention employs the antenna-reflected plate with little width base plate, and at least three described antenna-reflected plate circumferential array, both can obtain the omni-directional of antenna, and meet the deviation in roundness requirement of omnidirectional antenna, be again reduce more preferably selecting of omnidirectional antenna volume;
(2) feeding network is distributed in the positive and negative two sides of the base plate of described antenna-reflected plate by dual-polarization omnidirectional antenna of the present invention, and this makes undersized base plate also can arrange two groups to be respectively used to as the array-fed feeding network of different polarized radiation.
Accompanying drawing explanation
Fig. 1 is the perspective view of dual-polarization omnidirectional antenna of the present invention, wherein omits and radome is shown.
Fig. 2 is the vertical view of dual-polarization omnidirectional antenna of the present invention, illustrated therein is the arrangement architecture of antenna-reflected plate in this dual-polarization omnidirectional antenna inside.
Fig. 3 is the phase pattern of the horizontal direction of the single radiation cell array of dual-polarization omnidirectional antenna of the present invention.
Fig. 4 is the phase pattern of horizontal direction after all radiation cell array synthesis of dual-polarization omnidirectional antenna of the present invention.
Fig. 5 is that the feeding network in antenna-reflected plate front of the present invention arranges schematic diagram.
Fig. 6 is that the feeding network of antenna-reflected plate reverse side of the present invention arranges schematic diagram.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
With reference to figure 1, dual-polarization omnidirectional antenna of the present invention comprises multiple antenna-reflected plate 1 and multiple radiating element 2 be arranged on described antenna-reflected plate 1, also comprises the cylindrical antenna cover (not shown) forming the inner space holding described multiple antenna-reflected plate and radiating element, the upper mounting plate 3 of circle closing described radome top and bottom respectively and the bottom end cover 4 of circle; Described bottom end cover 4 outer surface is also provided with radio-frequency joint 5.
Particularly, with reference to figure 1 and Fig. 2, multiple described antenna-reflected plate 1 is vertically fixedly installed on described bottom end cover 4; Each described antenna-reflected plate 1 comprises base plate 11 and is connected to described base plate 11 both sides and side plate 12 obtuse-angulate with the front shape of this base plate 11, and the shape of cross section of described antenna-reflected plate 1 is do not have the inverted trapezoidal of end face or tubaeform.Further, the angle of the formation angle α between described two side plates 12, described angle α is preferably 360 °/n (n >=3).As shown in Figure 2, described angle α is preferably 120 °, thus, when three described antenna-reflected plates 1 centered by the axis of the longitudinally of this dual-polarization omnidirectional antenna, carry out circumferential array and belong to respectively the side plate 12 of adjacent described antenna-reflected plate 1 close to each other time, described 3 antenna-reflected plates 1 are just in time by the inner space trisection of this dual-polarization omnidirectional antenna.
Those skilled in the art know, the reflecting plate of antenna is generally made up of electric conducting material, the radiating element be arranged on this reflecting plate can be metal crimp casting mold oscillator, also can be PCB printing vibrator, and dual-polarized radiating element is provided with the polarization feed end that two are respectively not same polarization feed.The broadband of described radiating element and dual polarization characteristic determine wideband and the polarization characteristic of whole antenna, and the shape and size of described reflecting plate determine beam direction and the beamwidth of antenna.
In the present embodiment, a described antenna-reflected plate 1 and multiple radiating element 2 be arranged on this antenna-reflected plate 1 form a directional antenna A; As shown in Figure 3, the beamwidth of each described directional antenna A between 100 ~ 120, further, due to each described directional antenna A faced by direction different, the direction of its wave beam produced respectively is also different; Described three directional antenna A are carried out circumferential array centered by the longitudinal axis of described dual-polarization omnidirectional antenna, form omni-directional beam (see Fig. 4) after the directional beam of the different directions belonging to described three directional antenna A is respectively merged, to obtain, there is the isotropic described dual-polarization omnidirectional antenna of wave beam.
According to the actual demand of mobile communication, the number of the directional antenna A of described formation dual-polarization omnidirectional antenna can suitably adjust, it is individual that n (n > 3) can be set, but the size demand fulfillment 360 °/n of the angle α between two side plates 12 of the antenna-reflected plate 1 of each described directional antenna A, further, each base plate 11 of described antenna-reflected plate 1 and the size of side plate 12 also need correspondingly to adjust.
Further, the overall dimensions of this dual-polarization omnidirectional antenna of size impact of described base plate 11, in the present embodiment, the width of described base plate 11 is only 30mm, and the diameter of the dual-polarization omnidirectional antenna formed thus can reach 110mm or less.Further, when multiple described radiating element 2 carries out linear array along longitudinally respectively on the base plate 11 of described each antenna-reflected plate 1, the air line distance be arranged on respectively between the radiating element 2 on adjacent described antenna-reflected plate 1 can be contracted to 80mm.
With reference to figure 5 and Fig. 6, the base plate 11 of each described antenna-reflected plate 1 is also provided with feeding network 13.Because described base plate 11 size is less, for adapting to the size of this base plate 11, described feeding network 13 will be distributed in the obverse and reverse of described base plate 11: described feeding network 13 comprises the first power splitter 131 being arranged on described base plate 11 front and the first radio frequency cable group 132 of being drawn by this first power splitter 131, and the second power splitter 133 being arranged on described base plate 11 back side and the second radio frequency cable group 134 of being drawn by this second power splitter 133.
As shown in Figure 5, described first power splitter 131 is provided with the output port of the number of an input port and multiple radiating element 2 corresponding to being arranged on current described antenna-reflected plate 1, accordingly, described first radio frequency cable group 132 comprises many and draws and the radio frequency cable that is electrically connected of the feed end 21 that polarizes with first of each radiating element 2 respectively from each output port respectively.
As shown in Figure 6, structure and first power splitter 131 of described second power splitter 133 are similar, described second power splitter 133 is provided with the output port of the number of an input port and multiple radiating element 2 corresponding to being arranged on current described antenna-reflected plate 1, accordingly, described second radio frequency cable group 134 comprises many and draws and the radio frequency cable that is electrically connected of the feed end 22 that polarizes with second of each radiating element 2 respectively from described each output port respectively.
Further, with reference to figure 1, Fig. 5 and Fig. 6, the base plate 11 of directional antenna A described at least one of described dual-polarization omnidirectional antenna can also be provided with the 3rd power splitter 135 and the 3rd corresponding radio frequency cable group 136, particularly, described 3rd power splitter 135 is for carrying out preliminary power division (preliminary feed) for this dual-polarization omnidirectional antenna, be about to be assigned to from the gross power of external radio frequency cable input belong to three directional antenna A of this dual-polarization omnidirectional antenna, described 3rd power splitter 135 is provided with the input port of total number of an input port and multiple the first power splitter 131 corresponding to being arranged on all described antenna-reflected plates 1 and the second power splitter 133, accordingly, described 3rd radio frequency cable group 136 comprises many articles and draws and the radio frequency cable be electrically connected with the input port of described first power splitter 131 and the input port of the second power splitter 133 respectively from each output port described respectively.
In sum, dual-polarization omnidirectional antenna of the present invention and antenna-reflected plate thereof effectively reduce the size of dual-polarization omnidirectional antenna, and do not affect the radiance of this omnidirectional antenna.
Above-described embodiment is the present invention's preferably execution mode; but be not merely restricted to the described embodiments; change, the modification done under other any does not deviate from Spirit Essence of the present invention and principle, substitute, combine, simplify; all should be the substitute mode of equivalence, be all included within protection scope of the present invention.
Claims (10)
1. an antenna-reflected plate, is characterized in that: it comprise base plate and be connected to described base plate both sides and with the obtuse-angulate side plate of front shape of this base plate, the angle between described two side plates is 360 °/n, n >=3.
2. antenna-reflected plate as claimed in claim 1, is characterized in that: the angle between described two side plates is 120 °.
3. antenna-reflected plate as claimed in claim 1, it is characterized in that: this antenna-reflected plate is provided with feeding network, described feeding network comprises the first power splitter being arranged on described base plate front and the first radio frequency cable group of being drawn by this first power splitter, and is arranged on second power splitter at the described base plate back side and the second radio frequency cable group by the extraction of this second power splitter.
4. antenna-reflected plate as claimed in claim 3, is characterized in that: described feeding network also comprises the 3rd power splitter that is connected with described first power splitter and the second power splitter and the 3rd radio frequency cable group for connecting.
5. the antenna-reflected plate as described in claim 3 or 4, is characterized in that: the width of described base plate is 20 ~ 100mm.
6. antenna-reflected plate as claimed in claim 5, is characterized in that: the width of described base plate is 30mm.
7. a dual-polarization omnidirectional antenna, it comprises multiple antenna-reflected plate and multiple radiating element be arranged on described antenna-reflected plate, it is characterized in that: described antenna-reflected plate adopts the antenna-reflected plate as described in claim 1 ~ 6.
8. dual-polarization omnidirectional antenna as claimed in claim 7, it is characterized in that: described multiple antenna-reflected plate carries out circumferential array centered by the axis of the longitudinally of antenna, the side plate belonging to adjacent described antenna-reflected plate is respectively close to each other.
9. dual-polarization omnidirectional antenna as claimed in claim 8, is characterized in that: described antenna comprises 3 described antenna-reflected plates.
10. dual-polarization omnidirectional antenna as claimed in claim 7, is characterized in that: described multiple radiating element carries out linear array along longitudinally respectively on the base plate of described each antenna-reflected plate.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510508941.0A CN105119060A (en) | 2015-08-18 | 2015-08-18 | Dual-polarized omnidirectional antenna and antenna reflecting plate thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510508941.0A CN105119060A (en) | 2015-08-18 | 2015-08-18 | Dual-polarized omnidirectional antenna and antenna reflecting plate thereof |
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| CN201510508941.0A Pending CN105119060A (en) | 2015-08-18 | 2015-08-18 | Dual-polarized omnidirectional antenna and antenna reflecting plate thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105552575A (en) * | 2015-12-15 | 2016-05-04 | 福建星网锐捷网络有限公司 | Antenna and antenna control method and device |
| CN105764029A (en) * | 2016-04-19 | 2016-07-13 | 福州市佳璞电子商务有限公司 | RFID transceiver, video positioning system based on RFID, and video positioning method based on RFID |
| WO2020133147A1 (en) * | 2018-12-28 | 2020-07-02 | 华为技术有限公司 | Network device and communication system |
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| CN1599138A (en) * | 2004-07-28 | 2005-03-23 | 西安海天天线科技股份有限公司 | Four-polarization six-sector array omnidirectional antenna |
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| CN204905446U (en) * | 2015-08-18 | 2015-12-23 | 广东曼克维通信科技有限公司 | Double polarization omnidirectional antenna and antenna reflecting plate thereof |
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| CN1599138A (en) * | 2004-07-28 | 2005-03-23 | 西安海天天线科技股份有限公司 | Four-polarization six-sector array omnidirectional antenna |
| CN1835286A (en) * | 2005-03-15 | 2006-09-20 | 智易科技股份有限公司 | Antenna device with reflector |
| CN2870203Y (en) * | 2005-12-10 | 2007-02-14 | 摩比天线技术（深圳）有限公司 | Multi-fan-area antenna |
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| CN204905446U (en) * | 2015-08-18 | 2015-12-23 | 广东曼克维通信科技有限公司 | Double polarization omnidirectional antenna and antenna reflecting plate thereof |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105552575A (en) * | 2015-12-15 | 2016-05-04 | 福建星网锐捷网络有限公司 | Antenna and antenna control method and device |
| CN105764029A (en) * | 2016-04-19 | 2016-07-13 | 福州市佳璞电子商务有限公司 | RFID transceiver, video positioning system based on RFID, and video positioning method based on RFID |
| CN105764029B (en) * | 2016-04-19 | 2021-11-26 | 福州佳璞辨溯科技有限公司 | RFID-based video positioning system and positioning method |
| WO2020133147A1 (en) * | 2018-12-28 | 2020-07-02 | 华为技术有限公司 | Network device and communication system |
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