CN103236589B - A kind of bending reflecting plate form multi-antenna array - Google Patents
A kind of bending reflecting plate form multi-antenna array Download PDFInfo
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- CN103236589B CN103236589B CN201310171222.5A CN201310171222A CN103236589B CN 103236589 B CN103236589 B CN 103236589B CN 201310171222 A CN201310171222 A CN 201310171222A CN 103236589 B CN103236589 B CN 103236589B
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Abstract
A kind of bending reflecting plate form multi-antenna array provided by the invention, comprises more than one reflecting plate, each reflecting plate is installed an array antenna radiating element, and antenna radiation unit realizes electrical connection each other by the feeding network being located at reflecting plate back; Described multi-antenna array can provide ± 45 ° of dual polarized signals coverings.The reflecting plate of described multi-antenna array is repeatedly bending form, thus ensures each radiating element feeding centre point to reflecting plate apart from identical, improves the cross polarization discrimination of multi-antenna array with this.
Description
Technical field
The present invention relates to mobile communication array antenna technique field, especially relate to a kind of bending reflecting plate form multi-antenna array.
Background technology
In wireless mobile telecommunication technology field, the antenna as terminal is mainly used in transmitting and receiving signal.At present, wireless environment more complicated, electromagnetic wave, in wireless channel propagation process, owing to being subject to the reflection on earth's surface and barrier, refraction, loss, can produce the deflection of polarization.For this reason, main flow tracking exchage antenna many by two groups have mutually orthogonal polarised direction ± 45 ° of dual-polarization radiating units form, often organize radiating element and meet identical array features, therefore, it is possible to effectively tackle the unfavorable factors such as the polarization rotation caused because of circumstance complication.Meanwhile, because the correlation between different polarised direction channel is more weak, dual polarized antenna can produce the effect of polarization diversity.
The cross polarization discrimination of multi-antenna array is the key index determining polarization diversity effect, description be that same polarization receives the power level of (incoming level is maximum) and the difference of power level in directional diagram 3dB beamwidth of heteropolar reception (incoming level is minimum).In multi-antenna array transmitting and receiving signal process, the height of cross polarization discrimination directly determines the height that reception antenna receives wave energy.Although the mutually orthogonal radiating element of the at present many employings of tracking exchage antenna reduces the correlation between same polarization and heteropolar radiating element, but the restriction of the factor such as polarization purity, frequency range, bandwidth, beamwidth due to radiating element self, cross polarization discrimination often multi-antenna array exploitation difficult point.
Summary of the invention
The present invention proposes a kind of bending reflecting plate form multi-antenna array, its object is to improve cross polarization discrimination.
Technical scheme of the present invention is a kind of bending reflecting plate form multi-antenna array, comprise more than one reflecting plate, each reflecting plate is installed an array antenna radiating element, antenna radiation unit realizes electrical connection each other by the feeding network being located at reflecting plate back, the side of reflecting plate is symmetrical bending form, the left side of side or the right respectively comprise once above bending, the feeding centre point of each antenna radiation unit to reflecting plate apart from identical.
And the columns of multi-antenna array is 1-4 row, and the antenna radiation unit of each row is 5-12, and the polarization mode of antenna radiation unit is ± 45 ° of dual polarizations; Spacing between adjacent column is λ/2, and λ is electromagnetic wavelength corresponding to the center frequency point of multi-antenna array work; In one row, adjacent antenna radiating element spacing is d, and span is 0 < d < λ.
And, if the left side of reflecting plate side or the bending times on the right are n, reflecting plate first time dogleg section and reflecting plate horizontal component between bending angle be designated as θ 1, second time dogleg section and first time dogleg section between bending angle be designated as θ 2, third time dogleg section and second time dogleg section between bending angle be designated as θ 3 ... between n-th bending and (n-1)th dogleg section, bending angle is designated as θ n.
And as n=1, the bending angle θ 1 between reflecting plate horizontal component and vertical component is 90 °.
And, as n=2, reflecting plate first time dogleg section and reflecting plate horizontal component between bending angle θ 1 be 145 °, second time dogleg section and first time dogleg section between bending angle θ 2 be 160 °.
And, as n=3, reflecting plate first time dogleg section and reflecting plate horizontal component between bending angle θ 1 be 149 °, second time dogleg section and first time dogleg section between bending angle θ 2 be 169 °, third time dogleg section and second time dogleg section between bending angle θ 3 be 165 °.
Multi-antenna array provided by the invention can provide ± 45 ° of dual polarized signals coverings.The reflecting plate of described multi-antenna array is repeatedly bending form, thus ensures each radiating element feeding centre point to reflecting plate apart from identical, improves the cross polarization discrimination of multi-antenna array with this.The advantage of described multi-antenna array is, axial cross polarization discrimination can be realized in a relatively wide band limits and improve 5-8dB, ± 60 ° of cross polarization discriminations improve 2-6dB, and along with the increase of bending times and the raising of processing technology, the amplitude that cross polarization discrimination improves also can be larger.
Accompanying drawing explanation
Fig. 1 is the multi-antenna array general structure frame schematic diagram of the embodiment of the present invention.
Fig. 2 is the multi-antenna array local schematic top plan view of the embodiment of the present invention.
Fig. 3 is reflecting plate bending schematic side view of the embodiment of the present invention.
Fig. 4 is the reflecting plate secondary bending schematic side view of the embodiment of the present invention.
Fig. 5 is reflecting plate three bending schematic side view of the embodiment of the present invention.
Fig. 6 is reflecting plate n bending schematic side view of the embodiment of the present invention.
Embodiment
Multi-antenna array of the present invention, comprises reflecting plate, is arranged on multiple antenna radiation units on described reflecting plate with periodic arrangement, is arranged in the feeding network at described reflecting plate back.Described multiple antenna radiation unit realizes electrical connection each other by described feeding network.Technical solution of the present invention is described in detail below in conjunction with drawings and Examples.
In order to make invention technical problem to be solved, technical scheme and beneficial effect clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that described specific embodiment only in order to explain the present invention, and need not the present invention be limited.
As shown in Figure 1, multi-antenna array general structure frame schematic diagram.
Antenna radiation unit: be installed on reflecting plate, its effect is to provide basic radiating element;
Reflecting plate: in multi-antenna array, each row is located on a reflecting plate.All reflecting plates can be installed on antenna frame, and its effect is adjustment radiation pattern, toward specific direction concentrated radiation;
Feeding network: be installed on the reflecting plate back side, its effect carries out feed to each radiating element.
Radiating element realizes being electrically connected by coaxial cable and feeding network, panel can be adopted as metal fixing during concrete enforcement, realizes signal export (or input) eventually through the joint be installed on panel.
As shown in Figure 2, multi-antenna array local of the present invention schematic top plan view.
Multi-antenna array columns is 1-4 row, in each row, basic antenna radiation unit number is 5-12, and polarization mode is ± 45 ° of dual polarizations, and spacing is between the column and the column λ/2, in each row, between adjacent antenna radiating element, spacing is d, and namely antenna radiation unit is carry out the arrangement of group battle array the cycle with d.λ is electromagnetic wavelength corresponding to the center frequency point of multi-antenna array work, and its computing formula is λ=c/f, c is the light velocity, the frequency of frequency centered by f.D is the distance between two antenna radiation units, and span is 0 < d < λ.
The present invention proposes, and the reflecting plate of the cathetus of bending prior art symmetrically type, makes each radiating element feeding centre point to reflecting plate apart from identical as far as possible.During concrete enforcement, bending times can by those skilled in the art's sets itself, desirable bending times n=1,2,3 ..., general recommendations value is 2 or more.All reflecting plates of same multi-antenna array adopt same wrap direction.Accompanying drawing 3,4,5,6 mainly indicates left side angle of bending from horizontal component and is described, and the wrap direction on the right is corresponding.
As shown in Figure 3, multi-antenna array horizontal Tile arranges, and keep λ/2 spacing between the column and the column, when for once bending of the reflecting plate left side, the bending angle between reflecting plate horizontal component and vertical component is 90 °.
As shown in Figure 4, multi-antenna array horizontal Tile arranges, keep λ/2 spacing between the column and the column, when twice bending in the reflecting plate left side, reflecting plate first time dogleg section and reflecting plate horizontal component between bending angle be θ 1=145 °, second time dogleg section and first time dogleg section between bending angle be θ 2=160 °.
As shown in Figure 5, multi-antenna array horizontal Tile arranges, keep λ/2 spacing between the column and the column, when three bendings in the reflecting plate left side, between reflecting plate first time dogleg section and reflecting plate horizontal component, bending angle is θ 1=149 °, second time dogleg section and first time dogleg section between bending angle be θ 2=169 °, third time dogleg section and second time dogleg section between bending angle be θ 3=165 °.
As shown in Figure 6, multi-antenna array horizontal Tile arranges, keep λ/2 spacing between the column and the column, when n the bending in the reflecting plate left side, between note reflecting plate first time dogleg section and reflecting plate horizontal component, bending angle is θ 1, second time dogleg section and first time dogleg section between bending angle be θ 2, between dogleg section and second time dogleg section, bending angle is θ 3 for the third time ... between n-th bending and (n-1)th dogleg section, bending angle is θ n, concrete bending angle is relevant with the value of n, n can be got higher value until whole reflecting plate is close to arc.In general, the value of n is larger, and corresponding bending angle is larger, such as, bending angle θ 2(169 ° between second time dogleg section and first time dogleg section during n=3), bending angle θ 2(160 ° between second time dogleg section and first time dogleg section when being greater than n=2).Through repeatedly bending, reflecting plate is approached arc line type, make each radiating element feeding centre be in the center of circle of camber line, thus ensure each radiating element feeding centre point to reflecting plate apart from identical, improve the cross polarization discrimination of multi-antenna array with this.
The advantage of bending reflecting plate form multi-antenna array of the present invention is, axial cross polarization discrimination can be realized in a relatively wide band limits and improve 5-8dB, ± 60 ° of cross polarization discriminations improve 2-6dB, and along with the increase of bending times and the raising of processing technology, the amplitude that cross polarization discrimination improves also can be larger.
Specific embodiment described herein is only to the explanation for example of the present invention's spirit.Those skilled in the art can make various amendment or supplement or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present invention or surmount the scope that appended claims defines.
Claims (3)
1. a bending reflecting plate form multi-antenna array, comprise more than one reflecting plate, each reflecting plate is installed an array antenna radiating element, antenna radiation unit realizes electrical connection each other by the feeding network being located at reflecting plate back, it is characterized in that: the side of reflecting plate is symmetrical bending form, the left side of side or the right respectively comprise more than three times and three times bendings, if the left side of reflecting plate side or the bending times on the right are n, n >=3, between reflecting plate first time dogleg section and reflecting plate horizontal component, bending angle is designated as θ 1, second time dogleg section and first time dogleg section between bending angle be designated as θ 2, between dogleg section and second time dogleg section, bending angle is designated as θ 3 for the third time ... between n-th bending and (n-1)th dogleg section, bending angle is designated as θ n, through repeatedly bending, reflecting plate is approached arc line type, the feeding centre of each antenna radiation unit point is made to be in the center of circle of camber line, the feeding centre point of each antenna radiation unit to reflecting plate apart from identical.
2. bending reflecting plate form multi-antenna array as claimed in claim 1, is characterized in that: the columns of multi-antenna array is 1-4 row, and antenna radiation unit of each row is 5-12, and the polarization mode of antenna radiation unit is ± 45 ° of dual polarizations; Spacing between adjacent column is λ/2, and λ is electromagnetic wavelength corresponding to the center frequency point of multi-antenna array work; In one row, adjacent antenna radiating element spacing is d, and span is 0 < d < λ.
3. bending reflecting plate form multi-antenna array as claimed in claim 1 or 2, it is characterized in that: as n=3, between reflecting plate first time dogleg section and reflecting plate horizontal component, bending angle θ 1 is 149 °, second time dogleg section and first time dogleg section between bending angle θ 2 be 169 °, third time dogleg section and second time dogleg section between bending angle θ 3 be 165 °.
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| CN103515718A (en) * | 2013-09-27 | 2014-01-15 | 京信通信系统（中国）有限公司 | Exhaust pipe antenna |
| CN105932424B (en) * | 2016-04-20 | 2019-08-13 | 南通大学 | Wa-veguide Slot-Array Antennas |
| CN105977651A (en) * | 2016-06-28 | 2016-09-28 | 深圳前海科蓝通信有限公司 | Dual-polarization high-gain directional antenna and design method therefor |
| CN110873339B (en) * | 2018-08-31 | 2021-07-16 | 关隆股份有限公司 | Combustion apparatus and infrared reflection plate |
| CN110873330B (en) * | 2018-08-31 | 2021-08-20 | 关隆股份有限公司 | Combustion apparatus |
| US11015803B2 (en) | 2018-11-05 | 2021-05-25 | Grand Mate Co., Ltd. | Combustion device |
| CN109755759B (en) * | 2019-01-04 | 2020-09-04 | 武汉虹信通信技术有限责任公司 | Multi-frequency narrow-beam antenna array and antenna |
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Address after: 430205 Hubei city of Wuhan province Jiangxia Hidden Dragon Island Tan lake two Road No. 1 Patentee after: CITIC Mobile Communication Technology Co., Ltd Address before: 430073 Hubei province Wuhan Dongxin East Lake high tech Development Zone, Road No. 5 Patentee before: Wuhan Hongxin Telecommunication Technologies Co.,Ltd. |
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Address after: 430205 No.1 tanhu 2nd Road, Canglong Island, Jiangxia District, Wuhan City, Hubei Province Patentee after: CITIC Mobile Communication Technology Co.,Ltd. Address before: 430205 No.1 tanhu 2nd Road, Canglong Island, Jiangxia District, Wuhan City, Hubei Province Patentee before: CITIC Mobile Communication Technology Co., Ltd |
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