CN208873896U - A kind of six beam array antenna of wideband - Google Patents

Abstract

The utility model discloses a kind of six beam array antenna of wideband, is related to field of communication technology, including metallic reflection plate, radiation cell array and beam-forming network；Radiation cell array includes multiple subarrays being made of vertical arrangement radiating element；All radiating element arrangement modes are consistent；The radiating element orientation of all adjacent subarrays is identical in radiation cell array or the radiating element orientation of the part subarray of two sides is opposite with the subarray radiating element in middle position；Beam-forming network includes 8 × 8 butler matrix circuitries and the power distributing network for carrying out amplitude adjusted to signal；The phase of the output port of 8 × 8 butler matrix circuitries, which exists, is incremented by relationship；The antenna structure is simple, and network rate and capacity are high, is furthermore assembled simply using die casting unit, and not only antenna size is smaller, weight is lighter for preferred 4 row, 14 array structure, but also vertical surface wave width is wider, more conducively closely covers.

Description

A kind of six beam array antenna of wideband

Technical field

The utility model relates to six beam array antennas of field of communication technology more particularly to a kind of wideband.

Background technique

After fourth generation mobile communication technology 4G/LTE scale is commercial, the data traffic in mobile communications network is increased sharply, user Close quarters mobile communication system bandwidth capacity faces immense pressure.For the problem that single subdistrict capacity is limited, more waves are used The overlay area of beam antenna, conventional single sector can be subdivided into multiple sectors, and radio channel capacity is multiplied.Publication No. CN The utility model patent of 102570057 A proposes a kind of method that five wave beams are generated using 6 × 6 butler matrixs.Uniformly Each column of the radiating element of arrangement are connected with vertical power splitter, then are connected with 6 × 6 butler matrix delivery outlet, each Polarize corresponding 6 × 6 butler matrixs.But the technical work bandwidth only has 23.7% (1710-2170MHz), Bu Nengtong When compatible 4G LTE 2300 and 2600MHz frequency range, if frequency range is widened to 1700-2700MHz frequency range, azimuth plane exists 2700MHz frequency can generate the graing lobe of very Gao Yue -5dB, very big to neighbor cell interference.201621038190.7 benefit of patent With the radiating element arrangement mode of offset, available preferable grating lobe suppression ability.But this technical solution is realized Five beam antenna of wideband of fixed angle, a polarization need 2 sets of beam-forming networks and combine phase compensating circuit, and structure is multiple Miscellaneous, at high cost, for weight also than heavier, it is big that large-scale application promotes resistance.

Stadiums in the occasions such as Opening Ceremony of the Games aggregation number ten thousand or even 100,000 mobile communication subscribers, using five wave beams into Row cell splitting is still not enough to deal with growing flow demand.Capacity in order to further increase, needing to develop has more The antenna for base station of multi-beam, while simplifying antenna system configuration, reduce cost.Therefore, it is necessary in view of the above problems, design one The kind simple azimuth plane of structure has the six beam array antenna of wideband of 6 wave beams, and working band is widened to 1695-2700MHz, The frequency range of compatible 4G, 3G standard frequency range and part 2G standard, and working band range inner orientation angular direction has good secondary lobe With grating lobe suppression performance, to overcome the above problem.The patent of Patent No. WO 2017/156635A1 proposes a kind of based on three Six beam antennas that the working frequency range of layer patch antenna element composition is 1696-2690MHz, using 6 row, 14 column array, due to this The antenna element layering of technology is more, and plastic supporting pieces are more, and production assembly efficiency is low, and the gap on floor is to unit performance shadow It rings greatly, control accuracy requirement is high, is unfavorable for being mass produced.

Utility model content

The utility model provides a kind of six beam array antenna of wideband, the antenna structure letter aiming at the problem that background technique Single, network rate and capacity are high, furthermore assembled using die casting unit it is simple, and 4 row, 14 array structure not only antenna size it is smaller, Weight is lighter, and vertical surface wave width is wider, more conducively closely covers.

To achieve the goals above, the utility model proposes a kind of six beam array antennas of wideband, comprising: metallic reflection Plate, the radiation cell array for being set to metallic reflection plate and at least one beam-forming network；

The radiation cell array includes multiple subarrays being made of vertical arrangement radiating element；In the subarray All radiating element arrangement modes it is consistent；The radiating element orientation of all adjacent subarrays in the radiation cell array The radiation of the subarray in identical or radiation cell array two sides parts subarray radiating element orientation and middle position is single It is first opposite；

Preferably, the number of the subarray is 14.

The beam-forming network include for azimuth plane formed six wave beams 8 × 8 butler matrix circuitries and For 8 × 8 butler matrix circuitry output signals to be carried out with the power distributing network of amplitude adjusted.

Preferably, 8 × 8 butler matrix circuitries, including multi-level mixer group and multiple phase shifters, every level-one Mixer group includes multiple 90 degree of blender circuits；It is connected between mixer group by phase shifter.

Preferably, the multi-level mixer group includes that first order mixer group, second level mixer group and the third level are mixed Clutch group；Wherein,

Input terminal of 6 input ports as 8 × 8 butler matrix circuitries in first order mixer group input port Mouthful, the output port of first order mixer group connects the input port of second level mixer group by 4 phase shifters；The second level is mixed The output port of clutch group connects the input port of third level mixer group by 4 phase shifters；8 of third level mixer group Output port is the output port of 8 × 8 butler matrix circuitries.

Preferably, another 2 input ports in the first order mixer group input port connect 50 ohm loads.

Preferably, when each input port input signal of 8 × 8 butler matrix circuitry, third level mixing The phase of 8 output ports of device group, which exists, is incremented by relationship.

Preferably, 8 × 8 butler matrix circuitries form six wave beams in azimuth plane, wherein the first wave beam Azimuth coverage is 25 to 55 degree, and the azimuth coverage of the second wave beam is 15 to 30 degree, and the azimuth of third wave beam is 4 to 15 Degree, the azimuth coverage of the 4th wave beam are -4 to -15 degree, and the 5th beam positional angular region is -15 to -30 degree, the 6th wave beam Azimuth coverage is -25 to -55 degree.

Preferably, the radiating element is dual polarized antenna unit.

Preferably, the radiating element number vertically arranged in each subarray is 4.

Preferably, antenna further include: the same polarization of power divider network, the radiating element passes through power divider network It is connected with beam-forming network；The power divider network includes multiple 4 tunnels power divider circuit.

Preferably, the frequency range of the Antenna Operation is 1695-2700MHz.

Preferably, the radiation cell array, using die casting unit, feed tab and oscillator body pass through welded connecting.

The utility model proposes a kind of six beam array antennas of wideband, and radiation cell array includes multiple subarrays, each A subarray includes the radiating element that at least one is vertically arranged, and adjacent subarray arrangement mode is consistent or positioned at two The part subarray arrangement of side is reversed with the subarray in middle position；Using 8 × 8 butler matrix circuitries and power distributing network Beam-forming network is constituted, to generate 6 wave beams of azimuth plane；The multiple-beam array antenna, a set of beam-forming network Polarized 6 wave beam can be generated in azimuth plane, five wave beam of ultra-wideband uses two sets of wave beam shapes compared with the existing technology At the scheme of network, component reduces half, and connection cables reduce half；Subarray reversed simultaneously reduces 180 degree phase shifter Component, the two combine simplify the components such as beam-forming network, reduce costs；Six beam antennas all have in ultratvide frequency band There are preferable secondary lobe and grating lobe suppression performance, reduces the adjacent area interference of wave beam respective cell, do not increasing antenna site and terrace The channeling that neighboring community is realized under conditions of resource, improves network capacity.

Detailed description of the invention

In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor Under, the structure that can also be shown according to these attached drawings obtains other attached drawings.

Fig. 1 is the radiating element arrangement signal of six beam antenna of wideband in a kind of preferred embodiment of the utility model Figure；

Fig. 2 is the connection figure of beam-forming network in a kind of preferred embodiment of the utility model；

Fig. 3 is 8 × 8 butler matrix circuitries and power distributing network line in a kind of preferred embodiment of the utility model Figure, wherein figure (a) is 8 × 8 butler matrix circuitry schematic diagrames, and figure (b) is power distributing network schematic diagram；

Fig. 4 is radiation cell array layout viewing in a kind of preferred embodiment of the utility model；

Fig. 5 is mixer and phase shifter mechanical structure schematic diagram in a kind of preferred embodiment of the utility model, wherein figure It (a) is 3D perspective view, figure (b) is mechanical explosion figure；

Fig. 6 is the synthesis side of six wave beam 1695,2025 and 2700MHz frequencies in a kind of preferred embodiment of the utility model Xiang Tu, wherein figure (a) is the compound direction figure of 1695MHz frequency, and figure (b) is the compound direction figure of 2025MHz frequency, is schemed (c) For the compound direction figure of 2700MHz frequency；

Symbol description:

121 be subarray；111 be radiating element；101 be oscillator；301 be the first beam-forming network；302 be the second wave Beam forms network；B (2,1) ... B (2,7) ... B (2,14) is the output end of the first beam-forming network 301；411,412, 413,414,415,416 be the first beam-forming network 301 input terminal；A (2,1) ... A (2,7) ... A (2,14) is second The output end of beam-forming network 302；421,422,423,424,425,426 be the second beam-forming network 302 input terminal； 310 be phase shifter circuit, and 311-1,311-2,311-3 and 311-4 are four 90 degree of blender circuits that the first order includes, 312- 1,312-2,312-3 and 312-4 are four 90 degree of blender circuit groups that the second level includes；313-1,313-2,313-3 and 313-4 is four 90 degree of blender circuit groups that the third level includes；314 be load；315 be power distributing network；501 be connection Block.

The embodiments will be further described with reference to the accompanying drawings for the realization, functional characteristics and advantage of the utility model aim.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describing, it is clear that described embodiment is only a part of the embodiment of the utility model, rather than all Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creative work premise Under every other embodiment obtained, fall within the protection scope of the utility model.

It is to be appreciated that if related in the utility model embodiment directionality instruction (such as upper and lower, left and right, it is preceding, Afterwards ...), then directionality instruction is only used for explaining opposite between each component under a certain particular pose (as shown in the picture) Positional relationship, motion conditions etc., if the particular pose changes, directionality instruction is also correspondingly changed correspondingly.

In addition, if relating to the description of " first ", " second " etc. in the utility model embodiment, " first ", " the Two " etc. description is used for description purposes only, and is not understood to indicate or imply its relative importance or is implicitly indicated meaning The quantity of the technical characteristic shown." first " is defined as a result, the feature of " second " can explicitly or implicitly include at least one A this feature.It in addition, the technical solution between each embodiment can be combined with each other, but must be with ordinary skill Based on personnel can be realized, this technical side will be understood that when the combination of technical solution appearance is conflicting or cannot achieve The combination of case is not present, also not within the protection scope of the requires of the utility model.

In a kind of preferred embodiment of the utility model, the pitching face electrical tilt of six beam array antenna each wave beam of wideband It is fixed, as shown in Figure 1, comprising: metallic reflection plate, the radiation cell array for being set to metallic reflection plate, a Wave beam forming net Network and power divider network, the output end of beam-forming network are connected to the network the input terminal of radiation cell array by splitter；Institute The radiation cell array stated includes 14 subarrays vertically arranged 121, and each subarray includes 4 radiating elements 111, the radiating element is dual polarized antenna unit, includes two positive and negative 45 degree mutually orthogonal polarized oscillators 101, radiation Cell array the 1st, 2,3 subarrays it is identical as the oscillator direction of 12,13,14 subarrays, and with 4 to 11 subarray oscillator direction phases Instead；The vertical interval VD of each subarray radiating element is equal, and the horizontal space HD between each subarray is equal；

In a kind of preferred embodiment of the utility model, the radiating element and the output port phase of power divider network of each column Even, the power divider network is made of multiple 4 tunnels power divider circuit, and 4 tunnel power divider circuit quantity are 14 × 2=in the present embodiment 28；The same polarized oscillator of the radiating element of each column passes through cable and same 4 Lu Gongfen in radiation cell array Device circuit output port be connected, each wave beam has 6 degree to have a down dip in vertical plane, then with the first beam-forming network 301 in Fig. 2 It is connected with the second beam-forming network 302.

In a kind of preferred embodiment of the utility model, as shown in Fig. 2, the first beam-forming network 301 and the second wave beam shape Connect the not same polarization oscillator of the same vertical direction subarray by 14 4 road power splitters respectively at network 302；B in figure (2, 1) ... (2,7) B ... B (2,14) is the output end of the first beam-forming network 301, and 411,412,413,414,415,416 are The input terminal of first beam-forming network 301；A (2,1) ... A (2,7) ... A (2,14) is the second beam-forming network 302 Output end, 421,422,423,424,425,426 be the input terminal of the second beam-forming network 302；

In the utility model embodiment, each beam-forming network is by 8 × 8 butler matrix circuitries and power distributing network Network composition is schemed shown in (a) in 8 × 8 butler matrix circuitries such as Fig. 3 as schemed shown in (a) and figure (b) in Fig. 3, mixed comprising three-level Clutch circuit group, the first order include four 90 degree of blender circuits 311-1,311-2,311-3 and 311-4, and the second level includes four A 90 degree of blender circuits group 312-1,312-2,312-3 and 312-4, the third level include four 90 degree of blender circuit group 313- 1,313-2,313-3 and 313-4；The output port of first order blender circuit group 311-1 to 311-4 passes through phase shifter circuit 310 are staggeredly connected with the input port of second level blender circuit group 312-1 to 312-4；Second level blender circuit group 312-1 Pass through the input port of phase shifter circuit 310 and third level blender circuit group 313-1 to 313-4 to the output port of 312-4 Staggeredly it is connected；The power distributing network of (b) is schemed in 6 output ports and Fig. 3 of third level blender circuit group 313-1 to 313-4 Network 315 is connected.

In the utility model embodiment, as schemed shown in (a) in Fig. 3, the first order mixer of 8 × 8 butler matrix circuitries Circuit group 311-1 to 311-4 connects 50 ohm loads 314 there are two input port, and remaining 6 port B1 to B6 are as 6 waves The input/output port of beam；Port B1 is the first wave beam, and azimuth coverage is 25 to 55 degree；Port B2 is the second wave beam, orientation Angular region is 15 to 30 degree；Port B3 is third wave beam, and azimuth is 4 to 15 degree；Port B4 is the 4th wave beam, azimuth coverage For -4 to -15 degree；Port B5 is the 5th wave beam, and azimuth coverage is -15 to -30 degree；Port B6 is the 6th wave beam, azimuth model It encloses for -25 to -55 degree.

In a kind of preferred embodiment of the utility model, the first beam-forming network 301 and the second beam-forming network 302 When the input signal of port, the phase of output port is incremented by according to ± 22.5, ± 67.5 and ± 112.5 degree respectively.

In a kind of preferred embodiment of the utility model, as shown in figure 4,4 rows 14 column are arranged in the utility model embodiment Array layout, using with die casting unit jaggy, feed tab is directly welded with oscillator body, and automation equipment can be used to realize vibration Sub-component Automation of Welding improves oscillator erection welding efficiency；It is the metal spacing block of 15mm height, Ke Yigai between oscillator Kind cross polarization ratio.

In a kind of preferred embodiment of the utility model, as shown in figure 5, in the utility model embodiment, 90 degree of mixers and Phase shifter is integrated, the 311-1 of corresponding diagram 3 and 310；It is 3D figure that (a) is schemed in Fig. 5, and figure (b) is explosive view in Fig. 5；The mould Block uses strip lines configuration, circuit is located at middle layer, and top layer and bottom are metal, the metal of circuit and top layer, bottom It is PCB dielectric-slab between ground, input/output port is welded and fixed to cable using link block 501；Compared to existing skill The beam-forming network of art microstrip line construction, shielding properties is more preferable, and intermodulation is more stable, and front and back ratio is more excellent.

As schemed (a), figure (b) in Fig. 6 and scheming to be the array layout arranged using 4 rows 14, the orientation of prototyping testing shown in (c) Six Beam synthesis directional diagram of edged surface, display frequency is respectively 1695MHz, 2025MHz and 2700MHz.The results show that in addition to lower Frequency point 1695MHz Sidelobe Suppression be lower than 15dB, remaining frequency point secondary lobe and grating lobe suppression are better than 15dB, and wave beam cross level is 10.5dB, 10dB beam angle range 70-121 degree.

The six beam antenna electrical tilt angles that the utility model is proposed are fixed, the scene for being suitble to user very intensive, than Such as large-scale stadiums, performing art centre and square.By carrying out fine small Division to application scenarios such as venues, how secondary use is Six beam antennas, the promotion at double of message capacity may be implemented.Five beam antenna of wideband compared with the existing technology is not only more One wave beam, capacity is more, and polarization oscillator only needs to cover beam-forming network using single, does not need two sets of wave beams Network is formed to inhibit graing lobe, structure is simpler, and weight is lighter, and cost is lower.Meanwhile the antenna size and five beam antennas Quite, do not increase wind load, it may be convenient to which configuration is on mast.

Above-mentioned six beam array antenna of wideband, each subarray include 4 radiating elements vertically arranged, six Beam antenna all has preferable secondary lobe and grating lobe suppression performance in ultratvide frequency band, and the adjacent area for reducing wave beam respective cell is dry It disturbs, the channeling of neighboring community is realized under conditions of not increasing antenna site and terrace resource, improve network capacity.

The above is only the preferred embodiment of the present invention, and therefore it does not limit the scope of the patent of the utility model, Under all utility models in the utility model are conceived, equivalent structure made based on the specification and figures of the utility model Transformation, or directly/be used in other related technical areas indirectly and be included in the scope of patent protection of the utility model.

Claims (12)

1. a kind of six beam array antenna of wideband characterized by comprising metallic reflection plate, the spoke for being set to metallic reflection plate Penetrate cell array and at least one beam-forming network；

The radiation cell array includes multiple subarrays being made of vertical arrangement radiating element；It is all in each subarray Radiating element arrangement mode is consistent；The radiating element orientation of all adjacent subarrays is identical in the radiation cell array, Or the subarray radiating element phase of the radiating element orientation of the part subarray of radiation cell array two sides and middle position Instead；

The beam-forming network includes 8 × 8 butler matrix circuitries for forming six wave beams in azimuth plane and is used for 8 × 8 butler matrix circuitry output signals are carried out with the power distributing network of amplitude adjusted.

2. six beam array antenna of wideband according to claim 1, which is characterized in that 8 × 8 butler matrixs electricity The phase of the corresponding output port of each input port on road, which exists, is incremented by relationship.

3. six beam array antenna of wideband according to claim 1, which is characterized in that the number of the subarray is greater than Or it is equal to 8.

4. six beam array antenna of wideband according to claim 1, which is characterized in that along Vertical Square in the subarray It is 4 to the radiating element number of arrangement.

5. six beam array antenna of wideband according to claim 1, which is characterized in that 8 × 8 butler matrixs electricity Road, including multi-level mixer group and multiple phase shifters, every level-one mixer group include multiple 90 degree of blender circuits；Mixer It is connected between group by phase shifter.

6. six beam array antenna of wideband according to claim 1, which is characterized in that 8 × 8 butler matrixs electricity Road forms six wave beams in azimuth plane, wherein the azimuth coverage of the first wave beam is 25 to 55 degree, the orientation of the second wave beam Angular region is 15 to 30 degree, and the azimuth of third wave beam is 4 to 15 degree, and the azimuth coverage of the 4th wave beam is -4 to -15 degree, the Five beam positional angular regions are -15 to -30 degree, and the azimuth coverage of the 6th wave beam is -25 to -55 degree.

7. six beam array antenna of wideband according to claim 1, which is characterized in that the radiating element is dual polarization Antenna radiation unit.

8. six beam array antenna of wideband according to claim 5, which is characterized in that the multi-level mixer group includes First order mixer group, second level mixer group and third level mixer group；Wherein,

Input port of 6 input ports as 8 × 8 butler matrix circuitries in first order mixer group input port, the The output port of level-one mixer group connects the input port of second level mixer group by 4 phase shifters；Second level mixer The output port of group connects the input port of third level mixer group by 4 phase shifters；8 outputs of third level mixer group Port is the output port of 8 × 8 butler matrix circuitries.

9. six beam array antenna of wideband according to claim 7, which is characterized in that the antenna further include: power splitter net The same polarization of network, the radiating element is connected by power divider network with beam-forming network；The power splitter net Network includes multiple 4 tunnels power divider circuit.

10. six beam array antenna of wideband according to claim 8, which is characterized in that the first order mixer group Another 2 input ports in input port connect load.

11. six beam array antenna of wideband according to claim 1, which is characterized in that the frequency range of the Antenna Operation is 1695-2700MHz。

12. six beam array antenna of wideband according to claim 1, which is characterized in that the radiation cell array is adopted With die casting unit, it is welded to connect between feed tab and oscillator body.