CN104269649B - Ultra-wide frequency band multi-band array antenna - Google Patents
Ultra-wide frequency band multi-band array antenna Download PDFInfo
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- CN104269649B CN104269649B CN201410484516.8A CN201410484516A CN104269649B CN 104269649 B CN104269649 B CN 104269649B CN 201410484516 A CN201410484516 A CN 201410484516A CN 104269649 B CN104269649 B CN 104269649B
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Abstract
The invention relates to an ultra-wide frequency band multi-band array antenna which comprises a metal reflection plate, a low-frequency radiation unit and a high-frequency radiation unit. The low-frequency radiation unit and the high-frequency radiation unit are mounted on the metal reflection plate, the low-frequency radiation unit works on a low-frequency band, and the high-frequency radiation unit works on a high-frequency band. The low-frequency radiation unit comprises two low-frequency oscillators which are both in +/-45-degree polarization and are mounted in a mutually orthogonal mode, the two low-frequency oscillators are connected with a feed network, and a +/-45-degree polarization far field radiation directional diagram is generated; the high-frequency radiation unit comprises two high-frequency oscillators which are both in +/-45-degree polarization and are mounted in a mutually orthogonal mode. The multi-band array antenna is capable of covering a 694-960 MHz ultra-wide frequency band and a 1710-2690 MHz ultra-wide frequency band and is simple in structure so as to be compatible with all frequency bands of a current mobile communication network.
Description
Technical field
The present invention relates to the communications field is and in particular to a kind of ultrabroad band multi-band array antenna.
Background technology
Due to the large-scale use of intelligent mobile terminal, so that the data service in mobile communication is occurred in that and be skyrocketed through.For
Meet the requirement to high speed data transfer in mobile communication, domestic and international Ge great operator greatly developing with TD-LTE and
Forth generation (4G) mobile communication technology based on two kinds of standards of FDD-LTE.Nowadays, 2G, 3G and the 4G LTE network that will popularize
And deposit, the system of multiple use different frequency ranges exists simultaneously, needs using the antenna for base station that can be operated in different frequency range.Using general
Logical narrow band antenna, a base station is accomplished by arranging many slave antennas, increased system complexity and property cost.In order to drop
Low networking cost, the broadband and miniaturization of antenna has become as one of current focus.
For compatible multiple communication standards, multifrequency dual polarized antenna is by large-scale use.Array sky of the prior art
Line is as shown in figure 1, its low frequency radiating element is by mutually orthogonal horizontal dipole and vertical dipole, then plus power splitter and 180 degree
Blender forms, thus producing the far field radiation pattern of ± 45 degree of polarization.This structure not only increases cost and produces hardly possible
Degree, decreases antenna gain it is therefore desirable to improve further simultaneously.
Content of the invention
It is an object of the invention to overcoming defect present in prior art, provide one kind can cover 694-960MHz and
The simple multi-band array antenna of structure of 1710-2690MHz ultrabroad band, all with compatible current mobile communications network
Frequency range.
For achieving the above object, the present invention employs the following technical solutions：
A kind of ultrabroad band multi-band array antenna, including：Metallic reflection plate, and it is arranged on the work in metallic reflection plate
Make in the low frequency radiating element compared with low-frequency range and the high frequency radiating element working in higher frequency band；
Described low frequency radiating element include two respectively be in ± 45 degree polarize and mutually orthogonal installation low-frequency vibrator, two is low
Frequency vibration is connected with feeding network, produces ± 45 degree of polarization far field radiation pattern；Multiple low frequency radiating element centrally along
One reference line arrangement, forms string low frequency array；Described first reference line and low-frequency vibrator are in 45 degree of angles；
Each low-frequency vibrator includes two radiation arms being symmetrically distributed on same straight line and is connected to two radiation arms
Between match circuit, each radiation arm is provided with least two chokes pipes, and described chokes pipe includes tubular body and is arranged at pipe
The sealing surface of the end face of shape body, described tubular body is fixedly connected with the radiation arm of low frequency radiating element by sealing surface；
Described high frequency radiating element include two respectively be in ± 45 degree polarize and mutually orthogonal installation high frequency oscillator, multiple
High frequency radiating element centrally along one or more reference line arrange, formed one or more columns per page HF array, described one or many
Bar reference line is overlapped or parallel with the first reference line.
Further, the both sides of each low frequency radiating element are additionally provided with two parasitic oscillators, and described two parasitism oscillators divide
It is not arranged at the both sides of low-frequency vibrator, fed by the radiation arm coupling of low-frequency vibrator.
Further, described low frequency radiating element works in 694～960MHz band limits, described high frequency radiating element work
Make in 1710～2690MHz band limits.
Further, in each column HF array, it is provided between two neighboring low frequency radiating element no less than a high frequency spoke
Penetrate unit.
Further, one or more columns per page HF array is subordinated to same radio frequency system.
Further, the multiple high frequency radiating element in string HF array are subordinated to multiple separate high frequency systems
System.
Further, high frequency radiating element is parallel with the bearing of trend of the same polarization oscillator in low frequency radiating element or heavy
Close, the bearing of trend of heteropolar oscillator is mutually perpendicular to.
Further, the end of described low-frequency vibrator has a bending segment, and described bending segment is on the end edge of low-frequency vibrator
Bending setting or vertically tilted upward setting about horizontal direction.
Further, described bending segment is provided with chokes pipe.
A kind of ultra wideband multi-band section array antenna that the present invention provides, low frequency radiating element and high frequency radiating element are in metal
Mutually nested arrangement on reflecting plate.It is simple and compact for structure and arrangement mode is flexible, can utilize multiple separate high frequencies
The covering to multiple different frequency ranges of system and low frequency realization, and then effectively realize to 694-960MHz and 1710- on the whole
The covering of 2690MHz ultrabroad band, with all frequency ranges of compatible current mobile communications network.
Using the structure of the present invention, radiation characteristic in ultra wide band range for the multi-band array antenna can be kept stable,
And the 2G in compatible mobile communication, all standards of 3G and 4G LTE, the number of antennas used by base station not only can be reduced, reduce cloth
Stand cost it is also possible to reduce operation maintenance expense.
Brief description
Fig. 1 is the structural representation of array antenna of the prior art.
A kind of partial structural diagram of ultrabroad band three frequency range array antenna that Fig. 2 provides for the embodiment of the present invention one.
Fig. 3 is the structural representation of the low frequency radiating element in Fig. 2.
A kind of overall structure diagram of ultrabroad band three frequency range array antenna that Fig. 4 provides for the embodiment of the present invention one.
Fig. 5 is the structural representation of the low frequency radiating element in the embodiment of the present invention two.
A kind of overall structure diagram of ultrabroad band three frequency range array antenna that Fig. 6 provides for the embodiment of the present invention two.
A kind of overall structure diagram of ultrabroad band five frequency range array antenna that Fig. 7 provides for the embodiment of the present invention three.
A kind of partial structural diagram of ultrabroad band three frequency range array antenna that Fig. 8 provides for the embodiment of the present invention four.
A kind of overall structure diagram of ultrabroad band three frequency range array antenna that Fig. 9 provides for the embodiment of the present invention four.
A kind of overall structure diagram of ultrabroad band six frequency range array antenna that Figure 10 provides for the embodiment of the present invention five.
Specific embodiment
Below in conjunction with accompanying drawing and specific embodiment, technical scheme is described in detail.Need explanation
, for convenience of describing, this specification, when the orientation to each element is described, is entered using the visual angle as shown in Figure of description
Row description.Therefore in description for upper and lower, left and right concept all with the visual angle shown in Figure of description as reference.And it is actual
In use, product carries out different disposing ways according to practical situation, and in product, the relative bearing of each part is also accordingly adjusted
Whole, and should not be limited with the description orientation in this specification.
Embodiment one
As shown in Figures 2 to 4, a kind of ultrabroad band three frequency range array antenna provided in an embodiment of the present invention, including metal
Reflecting plate, and it is arranged on working in the low frequency radiating element 1 of relatively low-frequency range and working in higher frequency band in metallic reflection plate
High frequency radiating element 2.Preferably, described low frequency radiating element 1 works in 694～960MHz band limits, described high frequency spoke
Penetrate unit 2 and work in 1710～2690MHz band limits.
Described low frequency radiating element 1 include two respectively be in ± 45 degree polarization and mutually orthogonal installation low-frequency vibrator, divide
Not Wei positive polarization low-frequency vibrator 101 and negative polarization low-frequency vibrator 102, two low-frequency vibrator are connected with feeding network, produce ± 45 degree
Polarization far field radiation pattern.Equidistantly arranging centrally along the first reference line of multiple low frequency radiating element 1, forms string low frequency
Array.
Described high frequency radiating element 2 include two respectively be in ± 45 degree polarization and mutually orthogonal installation high frequency oscillator, divide
Wei not positive polarization high frequency oscillator and negative polarization high frequency oscillator.Wherein, the homopolarity in high frequency radiating element 2 and low frequency radiating element 1
The bearing of trend of change oscillator is parallel or overlaps, and that is, positive polarization low-frequency vibrator 101 is parallel with the bearing of trend of positive polarization high frequency oscillator
Or overlap, negative polarization low-frequency vibrator 102 is parallel with the bearing of trend of negative polarization high frequency oscillator or overlaps.Multiple high frequency radiating element
2 center along the second reference line and the arrangement of the 3rd reference line, forms two row HF arrays respectively.Wherein, described second reference line
With the 3rd reference line parallel to the first reference line, but three is mutually misaligned.In the embodiment of the present invention, described second reference line and
Three reference lines are symmetrical with respect to the first reference line, and are located at the both sides of the first reference line respectively, i.e. two row HF arrays position respectively
In low frequency array both sides.In general, the projection in metallic reflection plate of described low frequency radiating element 1 and high frequency radiating element 2
When mutually misaligned, the operating characteristic of array antenna is best；But if necessary it is also possible to partially overlap as needed.
As shown in figure 3, in low frequency radiating element 1, positive polarization low-frequency vibrator 101 includes being symmetrically distributed on same straight line
Two radiation arms and be connected to the match circuit between two radiation arms；Negative polarization oscillator 102 also includes being symmetrically distributed in together
Two radiation arms on one straight line and be connected to the match circuit between two radiation arms.The two of positive polarization low-frequency vibrator 101
Two radiation arms of individual radiation arm and negative polarization low-frequency vibrator 102 are orthogonal, and are physically mutually not connected to；Positive polarization low frequency shakes
Sub 101 match circuit and the mutually orthogonal placement of match circuit of negative polarization low-frequency vibrator 102, and hang down with metallic reflection plate respectively
Directly.The radiation arm of positive polarization low-frequency vibrator 101 and negative polarization low-frequency vibrator 102 is each parallel to metallic reflection plate.
As improvement, the present invention is additionally arranged at least two chokes pipes 104 on each radiation arm of low frequency radiating element 1,
Described chokes pipe 104 include tubular body and be arranged at tubular body end face sealing surface, described tubular body pass through sealing surface with
The radiation arm of low frequency radiating element 1 is fixedly connected.In embodiments of the present invention, the end face that on described tubular body, sealing surface is located is equal
It is the one end away from match circuit, in other embodiments, the end face that on described tubular body, sealing surface is located can also be direction
One end of match circuit.
The Main Function of chokes pipe 104 is to control the parasite current that high frequency radiating element 2 produces on low frequency radiating element 1
Flowing, to reduce the impact to high frequency oscillator directional diagram for the low-frequency vibrator.
As improvement, the both sides of described low frequency radiating element 1 are additionally provided with two parasitic oscillators 103, and described two parasitisms shake
Son 103 is respectively arranged at the both sides of low-frequency vibrator 1, is fed by the radiation arm coupling of low-frequency vibrator, to adjust far field spoke
The perpendicular polarisation components penetrated, and improve the wave beam degree of convergence.
In conjunction with shown in Fig. 2, in the embodiment of the present invention, often 2 high frequency spokes are distributed between two neighboring low frequency radiating element 1
Penetrate unit 2；I.e. in each column HF array, the high frequency radiating element 2 between two neighboring low frequency radiating element 1 has 1.High
Spacing between radio-frequency radiation unit 2 is d, and the spacing of low frequency radiating element is D, and the relation between them is：D=2*d.Such
Under layout, the orthographic projection in metallic reflection plate of low frequency radiating element 1 and high frequency radiating element 2 is mutually misaligned, is effectively reduced
Electrical Interference between the two.
In embodiments of the present invention, every string HF array is subordinated to an independent radio frequency system respectively.As Fig. 4 institute
Show, the high frequency radiating element 2 being on the second reference line and the 3rd reference line is subordinated to different radio frequency systems respectively.For changing
It, have two separate radio frequency systems, the portion of two in respectively Fig. 4 rectangle circle choosing in the embodiment of the present invention
Point.Described two radio frequency systems may operate in different frequency range it is also possible to be operated in similar frequency bands, and collectively cover 1710～
2690MHz frequency range, meanwhile, the low frequency radiating element 1 being on the first reference line covers 694～960MHz frequency range；Therefore, this
Accommodate 3 systems in bright embodiment, that is, constitute the three frequency range array antennas that 1 low frequency system and 2 radio frequency systems coexist.
Embodiment two
In multi-band array antenna, reduce the lap of orthographic projection in metallic reflection plate for each band antenna, very
To being allowed to mutually misaligned, can effectively reduce the electrical Interference between each band antenna.And in embodiment one, if will avoid low
The orthographic projection in metallic reflection plate of radio-frequency radiation unit 1 and high frequency radiating element 2 overlaps, then must limit low frequency radiating element 1
In two low-frequency vibrator length, to avoid low-frequency vibrator to touch high frequency oscillator, this just limits low frequency to a certain extent
The radiation characteristic of radiating element 1.
As shown in Figure 5 and Figure 6, the embodiment of the present invention is improved on the basis of embodiment one, and specifically, low frequency shakes
The end of son also has a bending segment, and described bending segment in the end of low-frequency vibrator, hang down in the horizontal direction by left and right bending setting or edge
Nogata is arranged to tilted upward.In the embodiment of the present invention, described bending segment is to the both sides bending of low frequency radiating element 1, bending segment
The bearing of trend extending perpendicularly to low frequency array, and bending segment be located at adjacent two high frequency radiating element 2 between.This knot
Structure extends the length of low-frequency vibrator, enhances the radiation characteristic of low frequency radiating element 1, avoids low frequency radiating element 1 simultaneously
Overlap (as shown in Figure 6) with orthographic projection in metallic reflection plate for the high frequency radiating element 2, decrease the mutual shadow between low-and high-frequency
Ring, improve the isolation of same frequency array.In other embodiments, described bending segment can also in the end of low-frequency vibrator upwards
Or downward-sloping setting, to adjust the lobe width of low frequency radiating element 1.
As improvement, described bending segment can also arrange chokes pipe 104.
The other technologies details of the embodiment of the present invention is identical with embodiment one, will not be described here.
Embodiment three
As shown in fig. 7, the embodiment of the present invention is changed on the basis of embodiment two, there is provided a kind of ultrabroad band
Five frequency range array antennas.Specifically, the multiple high frequency radiating element in the every string HF array in the embodiment of the present invention are therefrom
Between be divided into two parts, be subordinated to two separate radio frequency systems respectively.In other words, have four in the embodiment of the present invention altogether
Individual separate radio frequency system, the part of four in respectively Fig. 7 rectangle circle choosing, add another one low frequency system,
Constitute the five frequency range array antennas that 1 low frequency system and 4 radio frequency systems coexist.
Other features in the embodiment of the present invention are identical with embodiment two, therefore will not be described here.
Example IV
As shown in figure 8, the embodiment of the present invention is changed on the basis of embodiment two.Specifically, change low frequency spoke
Penetrate unit 1 and the relative position of high frequency radiating element 2, make high frequency oscillator and low-frequency vibrator Common arrangements on the first reference line,
Form a kind of narrower ultrabroad band of base plate three frequency range array antenna.
The spacing of adjacent high frequency radiating element 2 has two kinds：Two high frequency spokes between adjacent two low frequency radiating element 1
The spacing penetrating unit 2 is equal, is the first spacing d1；It is located at the adjacent high frequency radiation list of same low frequency radiating element 1 both sides respectively
The spacing of unit 2 is the second spacing d2.Described first spacing d1 is not more than the second spacing d2, makes low frequency radiating element 1 and high frequency spoke
Penetrate the distance between unit 2 to pull open as far as possible.The space D of neighboring low radiating element and the first spacing d1 and the second spacing d2 it
Between relation be：D=d1+d2.Under such layout, decrease low frequency radiating element 1 and high frequency radiating element 2 metallic reflection plate
On orthographic projection overlapping region, significantly reduce electrical Interference between the two.
In embodiments of the present invention, the HF array being arranged on the first reference line is divided into two parts from centre, point
It is not subordinated to an independent radio frequency system.As shown in Figure 9.Two separate radio frequency systems, two in respectively Fig. 9
The part of rectangle circle choosing.Described two radio frequency systems may operate in different frequency range it is also possible to be operated in similar frequency bands, and altogether
With covering 1710～2690MHz frequency range, meanwhile, low frequency radiating element 1 covers 694～960MHz frequency range；Therefore, the present invention is implemented
Accommodate three systems in example, that is, constitute the three frequency range array antennas that a low frequency system and two radio frequency systems coexist.
Embodiment five
As shown in Figure 10, the embodiment of the present invention is changed on the basis of example IV, there is provided a kind of ultra-wideband
Carry six frequency range array antennas.Specifically, the ultrabroad band three frequency range array antenna of two example IVs is arranged side by side, two
The ultrabroad band three frequency range array antenna being arranged side by side shares middle parasitic oscillator and base plate.Each in the embodiment of the present invention
Multiple high frequency radiating element in row HF array are divided into two parts from centre, are subordinated to two separate height respectively
Display system.In other words, there are four separate radio frequency systems, four in respectively Figure 10 altogether in the embodiment of the present invention
The part of rectangle circle choosing, adds two other low frequency system, constitutes two low frequency system and four radio frequency systems coexist
Six frequency range array antennas.
Other features in the embodiment of the present invention are identical with embodiment three, therefore will not be described here.
It is pointed out that in provided above five embodiments, the high frequency radiating element 2 in each system and low frequency spoke
The number penetrating unit 1 is that technical solution of the present invention one kind in actual applications is specifically chosen.According to Practical Project demand, increase
Plus or reduce the number of high frequency radiating element 2 and low frequency radiating element 1, still can realize three described frequency ranges, five frequency ranges or
Six band antenna arrays.Meanwhile, in above five embodiments, by reducing or increasing wherein one or more columns per page HF array
The quantity of medium-high frequency system, and then realize the two-band of other array formats, three frequency ranges, four frequency ranges, five frequency ranges or other are many
Frequency range array antenna is all fairly simple and easy thing, and those skilled in the art has the ability according on present configuration
The occasion of its application is expanded in motility.
It is emphasized that in above five embodiments, in each column HF array, positioned at two neighboring low frequency radiation list
The quantity of the high frequency radiating element 2 between unit 1 is preferably 1, the high frequency radiating element 2 of other quantity, such as two or three
Individual or even four or even greater number of high frequency radiating element, it is possible to achieve cover different high frequencies and Frequency scope, by
In the design without departing from the present invention, also within the scope of the present invention.
Especially be emphasized that in above five embodiments, in each column HF array, positioned at two neighboring low frequency radiation
Several 2 mesh of high frequency radiating element between unit 1 are fixing, and that is, low frequency radiating element 1 is equidistant arrangement.However, in reality
In the engineer applied of border, each low frequency radiating element 1 can also be unequal-interval arrangement, in this case, positioned at two neighboring
The number of the high frequency radiating element 2 between low frequency radiating element 1 is then unfixed.Such as, first pair of neighboring low radiation is single
There are two high frequency radiating element 2 between unit 1, between second pair of neighboring low radiating element 1, have three high frequency radiating element 2,
The spacing of this low frequency radiating element 1 changes staggered situation it is also possible to realize the optimization of low-and high-frequency coverage, due to
Without departing from the design of the present invention, also within protection scope of the present invention.
Embodiment described above only have expressed the several embodiments of the present invention, and its description is more concrete and detailed, but simultaneously
Therefore the restriction to the scope of the claims of the present invention can not be interpreted as.It should be pointed out that for those of ordinary skill in the art
For, without departing from the inventive concept of the premise, some deformation can also be made and improve, these broadly fall into the guarantor of the present invention
Shield scope.Therefore, the protection domain of patent of the present invention should be defined by claims.
Claims (9)
1. a kind of ultrabroad band multi-band array antenna is it is characterised in that include：Metallic reflection plate, and it is anti-to be arranged on metal
Penetrate the low frequency radiating element and the high frequency radiating element working in higher frequency band that work in compared with low-frequency range on plate；
Described low frequency radiating element include two be in respectively ± 45 degree polarize and mutually orthogonal installation low-frequency vibrator, two low frequencies shake
Son is connected with feeding network, produces ± 45 degree of polarization far field radiation pattern；Multiple low frequency radiating element centrally along first ginseng
Examine line arrangement, form string low frequency array；Described first reference line and low-frequency vibrator are in 45 degree of angles；
Each low-frequency vibrator includes two radiation arms being symmetrically distributed on same straight line and is connected between two radiation arms
Match circuit, each radiation arm is provided with least two chokes pipes, and described chokes pipe includes tubular body and is arranged at tubular body
End face sealing surface, described tubular body is fixedly connected with the radiation arm of low frequency radiating element by sealing surface；
Described high frequency radiating element include two respectively be in ± 45 degree polarize and mutually orthogonal installation high frequency oscillator, multiple high frequencies
Arranging centrally along one or more reference line of radiating element, forms one or more columns per page HF array, described one or more ginseng
Examine line to overlap or parallel with the first reference line；
The projection in metallic reflection plate of described low frequency radiating element and high frequency radiating element is mutually misaligned；
The spacing of neighboring low radiating element is equal to the spacing of alternate high frequency radiating element.
2. ultrabroad band multi-band array antenna according to claim 1 it is characterised in that：Each low frequency radiating element
Both sides are additionally provided with two parasitic oscillators, and described two parasitism oscillators are respectively arranged at the both sides of low-frequency vibrator, by low-frequency vibrator
Radiation arm coupling fed.
3. ultrabroad band multi-band array antenna according to claim 1 it is characterised in that：Described low frequency radiating element work
Make in 694～960MHz band limits, described high frequency radiating element works in 1710～2690MHz band limits.
4. ultrabroad band multi-band array antenna according to claim 1 it is characterised in that：In each column HF array, phase
It is provided with no less than a high frequency radiating element between adjacent two low frequency radiating element.
5. ultrabroad band multi-band array antenna according to claim 1 it is characterised in that：One or more columns per page HF array
It is subordinated to same radio frequency system.
6. ultrabroad band multi-band array antenna according to claim 1 it is characterised in that：Many in string HF array
Individual high frequency radiating element is subordinated to multiple separate radio frequency systems.
7. ultrabroad band multi-band array antenna according to claim 1 it is characterised in that：High frequency radiating element and low frequency
The bearing of trend of the same polarization oscillator in radiating element is parallel or overlaps, and the bearing of trend of heteropolar oscillator is mutually perpendicular to.
8. ultrabroad band multi-band array antenna according to claim 1 it is characterised in that：The end of described low-frequency vibrator
There is a bending segment, described bending segment is in the left and right bending setting or vertically upper and lower in the horizontal direction of the end of low-frequency vibrator
It is obliquely installed.
9. ultrabroad band multi-band array antenna according to claim 8 it is characterised in that：Described bending segment is provided with to be gripped
Flow tube.
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| CN201410484516.8A CN104269649B (en) | 2014-09-19 | 2014-09-19 | Ultra-wide frequency band multi-band array antenna |
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| CN104269649A (en) | 2015-01-07 |
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