CN104300209A - Vertical polarization ceiling omni antenna - Google Patents
Vertical polarization ceiling omni antenna Download PDFInfo
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- CN104300209A CN104300209A CN201410454184.9A CN201410454184A CN104300209A CN 104300209 A CN104300209 A CN 104300209A CN 201410454184 A CN201410454184 A CN 201410454184A CN 104300209 A CN104300209 A CN 104300209A
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- omnidirectional antenna
- short circuit
- perpendicular polarization
- polarization ceiling
- reflecting plate
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Abstract
The invention discloses a vertical polarization ceiling omni antenna. The vertical polarization ceiling omni antenna comprises a reflecting plate, a short-circuit monopole, a plurality of short-circuit pins and a first coaxial cable. The short-circuit monopole comprises a center part and a plurality of radiation parts, the inner end of each radiation part is connected with the center part, each radiation part extends in the direction far away from the center part, and the short-circuit monopole is arranged above the reflecting plate. The short-circuit pins are correspondingly connected with the radiation parts in a one-to-one mode and connected with the reflecting plate. The first coaxial cable comprises a first outer conductor and a first inner conductor. The first outer conductor is connected with the reflecting plate, and the first inner conductor penetrates through the reflecting plate and is connected with the center part of the short-circuit monopole. The vertical polarization ceiling omni antenna has the advantages of being simple in structure, easy to machine and produce, low in cost and profile, small in size and the like.
Description
Technical field
The present invention relates to a kind of perpendicular polarization ceiling omnidirectional antenna.
Background technology
Existing vertical depolarized omnidirectional antenna is all discone antenna and biconical antenna.There is the defect that difficulty of processing is large, cost is high in existing vertical depolarized omnidirectional antenna.
Summary of the invention
The present invention is intended to solve one of technical problem in correlation technique at least to a certain extent.For this reason, one object of the present invention is to propose a kind ofly have the perpendicular polarization ceiling omnidirectional antenna that structure is simple, be easy to the advantages such as processing, cost is lower, section is low, volume is little.
Perpendicular polarization ceiling omnidirectional antenna according to the embodiment of the present invention comprises: reflecting plate; Short circuit monopole, described short circuit monopole comprises central part and multiple radioactive department, the inner of each described radioactive department is connected with described central part and each described radioactive department extends to the direction away from described central part, and described short circuit monopole is located at the top of described reflecting plate; Multiple short circuit leg, multiple described short circuit leg is connected with multiple described radioactive department correspondingly, and each described short circuit leg is connected with described reflecting plate; With the first coaxial cable, described first coaxial cable comprises the first outer conductor and the first inner wire, and described first outer conductor is connected with described reflecting plate, and described first inner wire passes described reflecting plate and is connected with the described central part of described short circuit monopole.
Pass through to arrange the short circuit monopole comprising described central part and multiple described radioactive department according to the perpendicular polarization ceiling omnidirectional antenna of the embodiment of the present invention, thus do not adopt conical structure.Therefore, compare the Sheet Metal Forming Technology that conical structure need adopt drawing and forming, according to the short circuit monopole of the perpendicular polarization ceiling omnidirectional antenna of the embodiment of the present invention have structure simple, be easy to the advantages such as processing, cost are lower.
And, according to the design that the perpendicular polarization ceiling omnidirectional antenna of the embodiment of the present invention combines by adopting described reflecting plate, described short circuit monopole and described short circuit leg, thus the section of described perpendicular polarization ceiling omnidirectional antenna can be reduced, reduce the volume of described perpendicular polarization ceiling omnidirectional antenna.
Therefore, according to the perpendicular polarization ceiling omnidirectional antenna of the embodiment of the present invention have structure simple, be easy to the advantages such as processing, cost is lower, section is low, volume is little.
In addition, perpendicular polarization ceiling omnidirectional antenna according to the above embodiment of the present invention can also have following additional technical characteristic:
According to one embodiment of present invention, the angle between adjacent two described radioactive departments is equal to each other.Described perpendicular polarization ceiling omnidirectional antenna can be made thus substantially the same to the radiation of all directions, meet the radiation deviation in roundness requirement of omnidirectional antenna better, make described perpendicular polarization ceiling omnidirectional antenna have better omnidirectional radiation performance.
According to one embodiment of present invention, described perpendicular polarization ceiling omnidirectional antenna comprises top-loaded part further, and described top-loaded part is located on described short circuit monopole.By arranging described top-loaded part on described short circuit monopole, thus not only effectively can reduce the section of described perpendicular polarization ceiling omnidirectional antenna, reduce the volume of described perpendicular polarization ceiling omnidirectional antenna, and the impedance bandwidth of described perpendicular polarization ceiling omnidirectional antenna can be improved.
According to one embodiment of present invention, described top-loaded part is provided with the through hole of through along the vertical direction described top-loaded part.The structure of described perpendicular polarization ceiling omnidirectional antenna can be made thus more reasonable.
According to one embodiment of present invention, described top-loaded part comprises top board, and described top board is located on the upper surface of multiple described radioactive department.The structure of described perpendicular polarization ceiling omnidirectional antenna can be made thus more reasonable.
According to one embodiment of present invention, described top-loaded part comprises the side plate of annular further, the upper edge of described side plate be connected with the edge of described top board and described side plate from described top board downwardly towards extension, wherein said side plate is located on the lateral surface of multiple described radioactive department.The structure of described perpendicular polarization ceiling omnidirectional antenna can be made thus more reasonable.
According to one embodiment of present invention, described perpendicular polarization ceiling omnidirectional antenna comprises the baffle plate of annular further, and the upper surface that described baffle plate is located at described reflecting plate is arranged around described short circuit monopole and multiple described short circuit leg.
By arranging the baffle plate around described short circuit monopole and multiple described short circuit leg on the upper surface of described reflecting plate, thus not only can realize the omnidirectional radiation of described perpendicular polarization ceiling omnidirectional antenna horizontal direction, and under the radiance ensureing described perpendicular polarization ceiling omnidirectional antenna and the prerequisite of band requirement meeting described perpendicular polarization ceiling omnidirectional antenna, can effectively improve described perpendicular polarization ceiling omnidirectional antenna circularity index in the horizontal direction.
According to one embodiment of present invention, described baffle plate is provided with multiple opening, each described opening along inward-outward direction and the through described baffle plate of above-below direction, wherein each described short circuit leg in the circumference of described baffle plate between adjacent two described openings.The structure of described perpendicular polarization ceiling omnidirectional antenna can be made thus more reasonable.
According to one embodiment of present invention, described perpendicular polarization ceiling omnidirectional antenna comprises insulating part further, and described insulating part is located between described top-loaded part and described short circuit monopole and/or between described baffle plate and described reflecting plate and/or between described reflecting plate and described first coaxial cable.
By adding described insulating part, the connected mode of each metal parts can be made to be connected by capacitive coupling by directly connecting to change into, thus not only can ensure that described perpendicular polarization ceiling omnidirectional antenna has higher electrical property and meets the requirement of antenna frequency band, and passive intermodulation problem can be solved, the performance of described perpendicular polarization ceiling omnidirectional antenna can be improved.
According to one embodiment of present invention, described insulating part is non-metallic gasket, insulating lacquer layer or plastic film.
Accompanying drawing explanation
Fig. 1 is the structural representation of perpendicular polarization ceiling omnidirectional antenna according to an embodiment of the invention;
Fig. 2 is the structural representation of perpendicular polarization ceiling omnidirectional antenna according to another embodiment of the invention;
Fig. 3 is the structural representation of perpendicular polarization ceiling omnidirectional antenna according to still a further embodiment;
Fig. 4 is the structural representation of perpendicular polarization ceiling omnidirectional antenna according to still another embodiment of the invention;
Fig. 5 is the partial structurtes schematic diagram of the perpendicular polarization ceiling omnidirectional antenna according to the embodiment of the present invention;
Fig. 6 is the structural representation of the horizontally polarized omnidirectional antenna according to the embodiment of the present invention;
Fig. 7 is the structural representation of the horizontally polarized omnidirectional antenna according to the embodiment of the present invention;
Fig. 8 is the structural representation of the antenna according to the embodiment of the present invention.
Embodiment
Be described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Be exemplary below by the embodiment be described with reference to the drawings, be intended to for explaining the present invention, and can not limitation of the present invention be interpreted as.
The invention provides a kind of antenna, comprise perpendicular polarization ceiling omnidirectional antenna 10 and horizontally polarized omnidirectional antenna 20 according to the antenna of the embodiment of the present invention.Horizontally polarized omnidirectional antenna 20 is located at the top of perpendicular polarization ceiling omnidirectional antenna 10.
First with reference to figure 1-Fig. 5, the perpendicular polarization ceiling omnidirectional antenna 10 according to the embodiment of the present invention is described.As Figure 1-Figure 5, reflecting plate 101, short circuit monopole 102, first coaxial cable and multiple short circuit leg 103 is comprised according to the perpendicular polarization ceiling omnidirectional antenna 10 of the embodiment of the present invention.
Short circuit monopole 102 comprises central part 1021 and multiple radioactive department 1022, and the inner of each radioactive department 1022 is connected with central part 1021 and each radioactive department 1022 extends to the direction away from central part 1021, and short circuit monopole 102 is located at the top of reflecting plate 101.Multiple short circuit leg 103 is connected with multiple radioactive department 1022 correspondingly, and each short circuit leg 103 is connected with reflecting plate 101.That is, the quantity of short circuit leg 103 equals the quantity of radioactive department 1022, and a short circuit leg 103 is connected with a radioactive department 1022.First coaxial cable comprises the first outer conductor and the first inner wire, and described first outer conductor is connected with reflecting plate 101, and described first inner wire passes reflecting plate 101 and described first inner wire is connected with the central part 1021 of short circuit monopole 102.
Perpendicular polarization ceiling omnidirectional antenna 10 according to the embodiment of the present invention passes through to arrange the short circuit monopole 102 comprising central part 1021 and multiple radioactive department 1022, thus does not adopt conical structure.Therefore, compare the Sheet Metal Forming Technology that conical structure need adopt drawing and forming, according to the short circuit monopole 102 of the perpendicular polarization ceiling omnidirectional antenna 10 of the embodiment of the present invention have structure simple, be easy to the advantages such as processing, cost are lower.
And, according to the design that the perpendicular polarization ceiling omnidirectional antenna 10 of the embodiment of the present invention combines by adopting reflecting plate 101, short circuit monopole 102 and short circuit leg 103, thus the section of perpendicular polarization ceiling omnidirectional antenna 10 can be reduced, reduce the volume of perpendicular polarization ceiling omnidirectional antenna 10.
Therefore, according to the perpendicular polarization ceiling omnidirectional antenna 10 of the embodiment of the present invention have structure simple, be easy to the advantages such as processing, cost is lower, section is low, volume is little.
As Figure 1-Figure 5, reflecting plate 101, short circuit monopole 102, short circuit leg 103, first coaxial cable, top-loaded part 105, baffle plate 106 and insulating part 107 is comprised according to the perpendicular polarization ceiling omnidirectional antenna 10 of the embodiment of the present invention.Particularly, can be applied in the indoor distributed system of mobile communication according to the perpendicular polarization ceiling omnidirectional antenna 10 of the embodiment of the present invention.
Reflecting plate 101 can be metal chassis, and namely reflecting plate 101 can be made of metal.As Figure 1-Figure 4, reflecting plate 101 can be tabular, and reflecting plate 101 also can have curved surface.Reflecting plate 101 can be circle, regular polygon or irregular polygon.
Short circuit monopole 102 comprises central part 1021 and multiple radioactive department 1022, and the inner of each radioactive department 1022 is connected with central part 1021 and each radioactive department 1022 extends to the direction away from central part 1021, and short circuit monopole 102 is located at the top of reflecting plate 101.That is, short circuit monopole 102 has intersection, and central part 1021 can be that the common company headquarters of multiple radioactive department 1022 divides.
Short circuit monopole 102 does not adopt conical structure, but adopts the structure that multiple radioactive department 1022 intersects, thus can form the directional diagram of omnidirectional radiation.
Radioactive department 1022 can be tabular, and radioactive department 1022 also can have curved surface.Radioactive department 1022 can be the polygon of rule or irregular polygon.Central part 1021 and radioactive department 1022 can be metalworks, and namely central part 1021 and radioactive department 1022 can be made of metal.
As Figure 1-Figure 4, in some embodiments of the invention, the angle between adjacent two radioactive departments 1022 is equal to each other.In other words, the angle between adjacent two radioactive departments 1022 can be predetermined value.That is, multiple radioactive department 1022 can the circumference in centrally portion 1021 be arranged equally spacedly.Perpendicular polarization ceiling omnidirectional antenna 10 can be made thus substantially the same to the radiation of all directions, meet the radiation deviation in roundness requirement of omnidirectional antenna better, make perpendicular polarization ceiling omnidirectional antenna 10 have better omnidirectional radiation performance.
Particularly, as Figure 1-Figure 4, radioactive department 1022 is four, and the angle namely between adjacent two radioactive departments 1022 can be 90 degree.The structure of short circuit monopole 102 can be made thus more reasonable, and then the structure of perpendicular polarization ceiling omnidirectional antenna 10 can be made more reasonable.Size and the structure of multiple radioactive department 1022 can be mutually the same.
Short circuit leg 103 can be metalwork, and namely short circuit leg 103 can be made of metal.Short circuit leg 103 can be tabular, and short circuit leg 103 also can have curved surface.Short circuit leg 103 can be the polygon of rule or irregular polygon.Specifically, the upper end of short circuit leg 103 can be connected with radioactive department 1022, and the lower end of short circuit leg 103 can be connected with the upper surface of reflecting plate 101.
First coaxial cable comprises the first outer conductor and the first inner wire, and described first outer conductor is connected with reflecting plate 101, and described first inner wire passes reflecting plate 101 and described first inner wire is connected with the central part 1021 of short circuit monopole 102.Specifically, described first inner wire can be connected with the lower end of the central part 1021 of short circuit monopole 102.
As Figure 1-Figure 4, in examples more of the present invention, perpendicular polarization ceiling omnidirectional antenna 10 may further include top-loaded part 105, and top-loaded part 105 is located on short circuit monopole 102.By arranging top-loaded part 105 on short circuit monopole 102, thus not only effectively can reduce the section of perpendicular polarization ceiling omnidirectional antenna 10, reduce the volume of perpendicular polarization ceiling omnidirectional antenna 10, and the impedance bandwidth of perpendicular polarization ceiling omnidirectional antenna 10 can be improved.
Top-loaded part 105 can be metalwork, and namely top-loaded part 105 can be made of metal.As depicted in figs. 1 and 2, top-loaded part 105 can be tabular.Top-loaded part 105 also can have curved surface.Top-loaded part 105 can be circle, regular polygon or irregular polygon.
As shown in Figure 1-Figure 3, in a concrete example of the present invention, top-loaded part 105 is provided with the through hole 1053 of through along the vertical direction top-loaded part 105.The structure of perpendicular polarization ceiling omnidirectional antenna 10 can be made thus more reasonable.Advantageously, through hole 1053 can be circular hole.
Specifically, as shown in Figure 1, Figure 3 and Figure 4, top-loaded part 105 is located on the upper surface of multiple radioactive department 1022.That is, top-loaded part 105 is positioned at the top of short circuit monopole 102, and a part for the upper surface of each radioactive department 1022 contacts with the lower surface of top-loaded part 105.
As shown in Figure 2, in an example of the present invention, top-loaded part 105 comprises top board 1051, and top board 1051 is located on the upper surface of multiple radioactive department 1022.That is, top board 1051 is positioned at the top of short circuit monopole 102, and a part for the upper surface of each radioactive department 1022 contacts with the lower surface of top board 1051.The structure of perpendicular polarization ceiling omnidirectional antenna 10 can be made thus more reasonable.
As shown in Figure 2, top-loaded part 105 comprise further annular side plate 1052, the upper edge of side plate 1052 is connected with the edge of top board 1051, and side plate 1052 from top board 1051 downwardly towards extension, side plate 1052 is located on the lateral surface of multiple radioactive department 1022.The structure of perpendicular polarization ceiling omnidirectional antenna 10 can be made thus more reasonable.Wherein, above-below direction is as shown in the arrow A in Fig. 1-Fig. 5 and Fig. 8, and inward-outward direction is as shown in the arrow B in Fig. 1-Fig. 4.
Specifically, top board 1051 and side plate 1052 can be integrally formed, and top board 1051 is provided with the through hole 1053 of through along the vertical direction top board 1051.
As shown in Figure 3 and Figure 4, in some embodiments of the invention, perpendicular polarization ceiling omnidirectional antenna 10 comprises the baffle plate 106 of annular further, and baffle plate 106 is located on the upper surface of reflecting plate 101, and baffle plate 106 is arranged around short circuit monopole 102 and multiple short circuit leg 103.
By arranging the baffle plate 106 around short circuit monopole 102 and multiple short circuit leg 103 on the upper surface of reflecting plate 101, thus not only can realize the omnidirectional radiation of perpendicular polarization ceiling omnidirectional antenna 10 horizontal direction, and under the radiance ensureing perpendicular polarization ceiling omnidirectional antenna 10 and the prerequisite of band requirement meeting perpendicular polarization ceiling omnidirectional antenna 10, can effectively improve perpendicular polarization ceiling omnidirectional antenna 10 circularity index in the horizontal direction.
Baffle plate 106 can be metal baffle, and namely baffle plate 106 can be made of metal.
As shown in Figure 4, baffle plate 106 is provided with multiple opening 1061, each opening 1061 along inward-outward direction and the through baffle plate 106 of above-below direction, wherein each short circuit leg 103 in the circumference of baffle plate 106 between adjacent two openings 1061.
That is, baffle plate 106 can comprise multiple segmental arc 1062, and each segmental arc 1062 is relative with a radiating element, and namely each segmental arc 1062 is relative with a radioactive department 1022 with a short circuit leg 103.In other words, the part between two openings 1061 of baffle plate 106 is segmental arc 1062, and baffle plate 106 is discrete annular.The structure of perpendicular polarization ceiling omnidirectional antenna 10 can be made thus more reasonable.
In a concrete example of the present invention, as shown in Figure 5, perpendicular polarization ceiling omnidirectional antenna 10 comprises insulating part 107 further, and insulating part 107 is located between top-loaded part 105 and short circuit monopole 102 and/or between baffle plate 106 and reflecting plate 101 and/or between reflecting plate 101 and the first coaxial cable.
Specifically, perpendicular polarization ceiling omnidirectional antenna 10 may further include an insulating part 107, and insulating part 107 can be located between top-loaded part 105 and short circuit monopole 102 or between baffle plate 106 and reflecting plate 101 or between reflecting plate 101 and the first coaxial cable.
Perpendicular polarization ceiling omnidirectional antenna 10 may further include two insulating parts 107, insulating part 107 is located between top-loaded part 105 and short circuit monopole 102 and another insulating part 107 is located between baffle plate 106 and reflecting plate 101, or insulating part 107 is located between baffle plate 106 and reflecting plate 101 and another insulating part 107 is located between reflecting plate 101 and the first coaxial cable, or insulating part 107 is located between reflecting plate 101 and the first coaxial cable and another insulating part 107 is located between top-loaded part 105 and short circuit monopole 102.
Perpendicular polarization ceiling omnidirectional antenna 10 may further include three insulating parts, 107, three insulating parts 107 and can be located at respectively between top-loaded part 105 and short circuit monopole 102, between baffle plate 106 and reflecting plate 101 and between reflecting plate 101 and the first coaxial cable.
When producing perpendicular polarization ceiling omnidirectional antenna 10 in batches, being difficult to ensure that metal contact-making surface is perfect condition, being therefore difficult to metal parts be carried out directly connect reliably, thus causing the generation of passive intermodulation.By adding insulating part 107, the connected mode of each metal parts can be made to be connected by capacitive coupling by directly connecting to change into, thus not only can ensure that perpendicular polarization ceiling omnidirectional antenna 10 has higher electrical property and meets the requirement of antenna frequency band, and passive intermodulation problem can be solved, the performance of perpendicular polarization ceiling omnidirectional antenna 10 can be improved.
Particularly, insulating part 107 can be non-metallic gasket, insulating lacquer layer or plastic film.
Below with reference to Fig. 6 and Fig. 7, the horizontally polarized omnidirectional antenna 20 according to the embodiment of the present invention is described.As shown in Figure 6 and Figure 7, dielectric-slab 710, feeding network 720, floor 730, second coaxial cable 600 and multiple printed dipole 740 is comprised according to the horizontally polarized omnidirectional antenna 20 of the embodiment of the present invention.
Feeding network 720 is positioned at the top of dielectric-slab 710, and feeding network 720 comprises multiple feeder line 721.Floor 730 is positioned at the below of dielectric-slab 710, and floor 730 is positioned at the top of perpendicular polarization ceiling omnidirectional antenna 10.Multiple printed dipoles 740 are positioned at the below of dielectric-slab 710, and each printed dipole 740 is connected with floor 730 and each printed dipole 740 has gap 743.Multiple feeder line 721 is of coupled connections with multiple gap 743 correspondingly, multiple feeder line 721 correspondingly with the short circuit of multiple printed dipole 740.That is, the quantity in the quantity of feeder line 721, the quantity of printed dipole 740 and gap 743 is equal, and a feeder line 721 and a gap 743 are of coupled connections, a feeder line 721 and the short circuit of a printed dipole 740.Second coaxial cable 600 comprises the second outer conductor and the second inner wire, and described second outer conductor is connected with floor 730, and described second inner wire is through dielectric-slab 710, and described second inner wire is connected with feeding network 720.
According in the horizontally polarized omnidirectional antenna 20 of the embodiment of the present invention, feeding network 720, floor 730 and printed dipole 740 can form microstrip power divider.According to the horizontally polarized omnidirectional antenna 20 of the embodiment of the present invention by multiple feeder line 721 is of coupled connections with multiple gap 743 correspondingly and make multiple feeder line 721 correspondingly with the short circuit of multiple printed dipole 740, thus when access the second coaxial cable 600, effectively can suppress the electric current on the second outer conductor of the second coaxial cable 600, greatly can improve the polarization isolation between horizontally polarized omnidirectional antenna 20 and perpendicular polarization ceiling omnidirectional antenna 10 thus, polarization isolation between horizontally polarized omnidirectional antenna 20 and perpendicular polarization ceiling omnidirectional antenna 10 can be brought up to 40dB from 25dB.And, according to the horizontally polarized omnidirectional antenna 20 of the embodiment of the present invention, also there is good, the stability advantages of higher of processing consistency.
Therefore, have according to the horizontally polarized omnidirectional antenna 20 of the embodiment of the present invention that processing consistency is good, stability is high and polarization isolation advantages of higher between perpendicular polarization ceiling omnidirectional antenna 10.
According to the antenna of the embodiment of the present invention by arranging perpendicular polarization ceiling omnidirectional antenna 10 and horizontally polarized omnidirectional antenna 20, thus have that deviation in roundness is little, cross polarization than large, omnidirectional radiation, manufacture difficulty is little, low cost of manufacture, installation consistency are good, processing consistency is good, stability is high, polarization isolation advantages of higher between horizontally polarized omnidirectional antenna 20 and perpendicular polarization ceiling omnidirectional antenna 10.
Very extensive according to the adaptable field of the antenna of the embodiment of the present invention.Such as, can be applied in the indoor distributed system of 4G mobile communication according to the antenna of the embodiment of the present invention.In 4G mobile communication, MIMO technology can be adopted reach higher traffic rate, the use of 2 transmissions in can communicating respectively as MIMO with horizontally polarized omnidirectional antenna 20 according to the perpendicular polarization ceiling omnidirectional antenna 10 of the antenna of the embodiment of the present invention.
As shown in Figure 6 and Figure 7, in some embodiments of the invention, feeding network 720 can also comprise center connector 722, and one end of each feeder line 721 can be connected with center connector 722, and each feeder line 721 can extend to the direction away from center connector 722.The structure of feeding network 720 can be made thus more reasonable, and the difficulty of processing of feeding network 720 can be reduced.
Specifically, center connector 722 can be circular, and namely center connector 722 projection in the horizontal plane can be circular.
In one embodiment of the invention, as shown in Figure 6 and Figure 7, each printed dipole 740 comprises left arm 741 and right arm 742, and left arm 741 can be connected with floor 730 with each in right arm 742.Wherein, can form gap 743 between left arm 741 and right arm 742, feeder line 721 can with a short circuit in left arm 741 and right arm 742.The structure of printed dipole 740 can be made thus more reasonable.
As shown in Figure 6 and Figure 7, multiple feeder line 721 end can correspondingly with the short circuit of multiple printed dipole 740.Thus when access the second coaxial cable 600, more effectively can suppress the electric current on the second outer conductor of the second coaxial cable 600, thus the polarization isolation between horizontally polarized omnidirectional antenna 20 and perpendicular polarization ceiling omnidirectional antenna 10 can be improved further.
Specifically, the end of a feeder line 721 can with a short circuit in the left arm 741 of a printed dipole 740 and right arm 742.
Feeder line 721 can be close to gap 743 with the short dot of printed dipole 740.Thus when access the second coaxial cable 600, more effectively can suppress the electric current on the second outer conductor of the second coaxial cable 600, thus the polarization isolation between horizontally polarized omnidirectional antenna 20 and perpendicular polarization ceiling omnidirectional antenna 10 can be improved further.
In a concrete example of the present invention, feeder line 721 can be at least three, and printed dipole 740 can be at least three.
Angle between adjacent two feeder lines 721 can be equal to each other.In other words, the angle between adjacent two feeder lines 721 can be predetermined angular.That is, multiple feeder line 721 can the circumference of centrally connector 722 be arranged equally spacedly.Horizontally polarized omnidirectional antenna 20 can be made thus substantially the same with the radiation of the sky alignment all directions according to the embodiment of the present invention, meet the radiation deviation in roundness requirement of horizontally polarized omnidirectional antenna 20 and the antenna according to the embodiment of the present invention better, make horizontally polarized omnidirectional antenna 20 and according to the antenna of the embodiment of the present invention, there is better omnidirectional radiation performance.
Angle between adjacent two printed dipoles 740 can be equal to each other.In other words, the angle between adjacent two printed dipoles 740 can be predetermined angular.That is, multiple printed dipole 740 can be arranged equally spacedly along the circumference on floor 730.Horizontally polarized omnidirectional antenna 20 can be made thus substantially the same with the radiation of the sky alignment all directions according to the embodiment of the present invention, meet the radiation deviation in roundness requirement of horizontally polarized omnidirectional antenna 20 and the antenna according to the embodiment of the present invention better, make horizontally polarized omnidirectional antenna 20 and according to the antenna of the embodiment of the present invention, there is better omnidirectional radiation performance.
Particularly, feeder line 721 can be three, and printed dipole 740 can be three.Now, feeding network 720, floor 730 and printed dipole 740 can form the microstrip power divider of a point three.Angle between adjacent two feeder lines 721 can be 120 degree, and the angle between adjacent two printed dipoles 740 can be 120 degree.
As shown in Figure 7, in examples more of the present invention, horizontally polarized omnidirectional antenna 20 can also comprise metalwork 750, and metalwork 750 can be located on the lower surface on floor 730.By arranging metalwork 750 on the lower surface on floor 730, thus the circularity of horizontally polarized omnidirectional antenna 20 can be improved, reducing horizontally polarized omnidirectional antenna 20 to the impact of the standing-wave ratio of the high band of perpendicular polarization ceiling omnidirectional antenna 10.
Metalwork 750 can be triangle, and metalwork 750 can vertically extend.In other words, the projection of metalwork 750 on a certain perpendicular can be triangle.The circularity of horizontally polarized omnidirectional antenna 20 can be improved thus further, reduce horizontally polarized omnidirectional antenna 20 further to the impact of the standing-wave ratio of the high band of perpendicular polarization ceiling omnidirectional antenna 10.
As shown in Figure 6 and Figure 7, in an example of the present invention, horizontally polarized omnidirectional antenna 20 can also comprise multiple coupling minor matters 800, and one end of each coupling minor matters 800 can be connected with floor 730 and each coupling minor matters 800 can extend to the direction away from floor 730.Wherein, each coupling minor matters 800 can between adjacent two printed dipoles 740, and each printed dipole 740 can between adjacent two coupling minor matters 800.By arranging multiple coupling minor matters 800, horizontally polarized omnidirectional antenna 20 can be regulated and according to the isolation of the antenna of the embodiment of the present invention and the circularity of directional diagram.
Each coupling minor matters 800 can be metalworks, and namely each coupling minor matters 800 can be made of metal.Each coupling minor matters 800 can be strips.
As shown in Figure 8, in some embodiments of the invention, form spatial accommodation 1023 between multiple radioactive department 1022, the Part I 610 of the second coaxial cable 600 is positioned at spatial accommodation 1023.By forming spatial accommodation 1023 between multiple radioactive department 1022, thus can the Part I 610 of the second coaxial cable 600 be contained in spatial accommodation 1023, namely perpendicular polarization ceiling omnidirectional antenna 10 can be made to have symmetrical structure, thus the impact that the electric current that not only effectively can reduce the screen of the second coaxial cable 600 produces the deviation in roundness of perpendicular polarization ceiling omnidirectional antenna 10 and cross polarization, the deviation in roundness of perpendicular polarization ceiling omnidirectional antenna 10 is made to be less than the requirement of 3.5dB, cross polarization ratio is greater than 10dB, and perpendicular polarization ceiling omnidirectional antenna 10 and being coupled between horizontally polarized omnidirectional antenna 20 can be reduced, improve the installation consistency of perpendicular polarization ceiling omnidirectional antenna 10.
As shown in Figure 8, the Part II 620 of the second coaxial cable 600 is connected in reflecting plate 101, multiple short circuit leg 103 and multiple radioactive department 1022, and the second coaxial cable 600 is through reflecting plate 101.The impact that the electric current that can reduce the screen of the second coaxial cable 600 thus further produces the deviation in roundness of perpendicular polarization ceiling omnidirectional antenna 10 and cross polarization, thus the deviation in roundness of perpendicular polarization ceiling omnidirectional antenna 10 can be reduced further, and improve the cross polarization ratio of perpendicular polarization ceiling omnidirectional antenna 10 further.
It should be noted that, " connection " of the present invention can be direct connection, also can be of coupled connections or other connected modes.The all parts of perpendicular polarization ceiling omnidirectional antenna 10 can adopt suitable connected mode to connect.Simultaneously, the large I of coupling area carries out determining and adjusting according to the performance requirement of perpendicular polarization ceiling omnidirectional antenna 10, and object is to make perpendicular polarization ceiling omnidirectional antenna 10 require having enough large capacitance (coupling capacitance) under frequency.
In describing the invention, it will be appreciated that, term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ", " thickness ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end " " interior ", " outward ", " clockwise ", " counterclockwise ", " axis ", " radial direction ", orientation or the position relationship of the instruction such as " circumference " are based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore limitation of the present invention can not be interpreted as.
In addition, term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance or imply the quantity indicating indicated technical characteristic.Thus, be limited with " first ", the feature of " second " can express or impliedly comprise at least one this feature.In describing the invention, the implication of " multiple " is at least two, such as two, three etc., unless otherwise expressly limited specifically.
In the present invention, unless otherwise clearly defined and limited, the term such as term " installation ", " being connected ", " connection ", " fixing " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or integral; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals or the interaction relationship of two elements, unless otherwise clear and definite restriction.For the ordinary skill in the art, above-mentioned term concrete meaning in the present invention can be understood as the case may be.
In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature " on " or D score can be that the first and second features directly contact, or the first and second features are by intermediary indirect contact.And, fisrt feature second feature " on ", " top " and " above " but fisrt feature directly over second feature or oblique upper, or only represent that fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " below " and " below " can be fisrt feature immediately below second feature or tiltedly below, or only represent that fisrt feature level height is less than second feature.
In the description of this specification, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present invention or example.In this manual, to the schematic representation of above-mentioned term not must for be identical embodiment or example.And the specific features of description, structure, material or feature can combine in one or more embodiment in office or example in an appropriate manner.In addition, when not conflicting, the feature of the different embodiment described in this specification or example and different embodiment or example can carry out combining and combining by those skilled in the art.
Although illustrate and describe embodiments of the invention above, be understandable that, above-described embodiment is exemplary, can not be interpreted as limitation of the present invention, and those of ordinary skill in the art can change above-described embodiment within the scope of the invention, revises, replace and modification.
Claims (10)
1. a perpendicular polarization ceiling omnidirectional antenna, is characterized in that, comprising:
Reflecting plate;
Short circuit monopole, described short circuit monopole comprises central part and multiple radioactive department, the inner of each described radioactive department is connected with described central part and each described radioactive department extends to the direction away from described central part, and described short circuit monopole is located at the top of described reflecting plate;
Multiple short circuit leg, multiple described short circuit leg is connected with multiple described radioactive department correspondingly, and each described short circuit leg is connected with described reflecting plate; With
First coaxial cable, described first coaxial cable comprises the first outer conductor and the first inner wire, and described first outer conductor is connected with described reflecting plate, and described first inner wire passes described reflecting plate and is connected with the described central part of described short circuit monopole.
2. perpendicular polarization ceiling omnidirectional antenna according to claim 1, is characterized in that, the angle between adjacent two described radioactive departments is equal to each other.
3. perpendicular polarization ceiling omnidirectional antenna according to claim 1, is characterized in that, comprise top-loaded part further, and described top-loaded part is located on described short circuit monopole.
4. perpendicular polarization ceiling omnidirectional antenna according to claim 3, is characterized in that, described top-loaded part is provided with the through hole of through along the vertical direction described top-loaded part.
5. perpendicular polarization ceiling omnidirectional antenna according to claim 3, is characterized in that, described top-loaded part comprises top board, and described top board is located on the upper surface of multiple described radioactive department.
6. perpendicular polarization ceiling omnidirectional antenna according to claim 5, it is characterized in that, described top-loaded part comprises the side plate of annular further, the upper edge of described side plate be connected with the edge of described top board and described side plate from described top board downwardly towards extension, wherein said side plate is located on the lateral surface of multiple described radioactive department.
7. the perpendicular polarization ceiling omnidirectional antenna according to any one of claim 1-6, is characterized in that, comprises the baffle plate of annular further, and the upper surface that described baffle plate is located at described reflecting plate is arranged around described short circuit monopole and multiple described short circuit leg.
8. the perpendicular polarization ceiling omnidirectional antenna according to any one of claim 1-7, it is characterized in that, described baffle plate is provided with multiple opening, each described opening along inward-outward direction and the through described baffle plate of above-below direction, wherein each described short circuit leg in the circumference of described baffle plate between adjacent two described openings.
9. the perpendicular polarization ceiling omnidirectional antenna according to any one of claim 1-8, it is characterized in that, comprise insulating part further, described insulating part is located between described top-loaded part and described short circuit monopole and/or between described baffle plate and described reflecting plate and/or between described reflecting plate and described first coaxial cable.
10. the perpendicular polarization ceiling omnidirectional antenna according to any one of claim 1-9, is characterized in that, described insulating part is non-metallic gasket, insulating lacquer layer or plastic film.
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| CN201410454184.9A CN104300209B (en) | 2014-09-05 | 2014-09-05 | Vertical polarization ceiling omnidirectional antenna |
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| CN201410454184.9A CN104300209B (en) | 2014-09-05 | 2014-09-05 | Vertical polarization ceiling omnidirectional antenna |
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| CN104300209B CN104300209B (en) | 2021-09-07 |
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| CN201410454184.9A Expired - Fee Related CN104300209B (en) | 2014-09-05 | 2014-09-05 | Vertical polarization ceiling omnidirectional antenna |
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