CN103500885B - A kind of X-band wide band high-gain, low friendship ultimate ratio Dual-polarized Micro Strip Array row - Google Patents
A kind of X-band wide band high-gain, low friendship ultimate ratio Dual-polarized Micro Strip Array row Download PDFInfo
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- CN103500885B CN103500885B CN201310416481.XA CN201310416481A CN103500885B CN 103500885 B CN103500885 B CN 103500885B CN 201310416481 A CN201310416481 A CN 201310416481A CN 103500885 B CN103500885 B CN 103500885B
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Abstract
The invention discloses a kind of X-band wide band high-gain, low friendship ultimate ratio Dual-polarized Micro Strip Array row, described Dual-polarized Micro Strip Array leu time by: left-handed materials coating, inverted parasitic patch layer, Rohacell31HF foam support layer, to polarize containing the antenna horizontal polarization coplanar wave guide feedback layer of radiating element, antennas orthogonal aperture-coupled layer, microstrip antenna array fixed cavity, metallic reflection plate and radio frequency connector group form.The present invention adopts the new technology such as photon crystal structure, left-handed materials coating, again by increasing parasitic patch and the ingehious design to antenna array feeding network, make it have the electric property that broadband, high-isolation, high-gain, low-cross polarization level and low graing lobe level etc. are good, simultaneously lightweight, profile is low, manufacture is simple, easily combine with active device.
Description
Technical field
The utility model belongs to technical field of radar communication, and relate to a kind of Dual-polarized Micro Strip Array row, especially a kind of X-band wide band high-gain, low friendship ultimate ratio Dual-polarized Micro Strip Array arrange.
Background technology
In radar communications system, for improving sensitivity, distance and bearing resolution, the image blur degree of system and surveying and drawing the performances such as bandwidth, require that use has dual polarization, broadband, high-isolation, low-cross polarization level, high efficiency active phase array antenna.
In prior art, this antenna mostly adopts Waveguide slot battle array to realize, and its technology is relatively ripe, can realize good port isolation and cross polarization characteristics, but its structure comparison is heavy, processed complex, is used in particular on satellite, be subject to the restriction such as space, weight, can not do too large.
Patent content of the present invention
The object of patent of the present invention is the shortcoming overcoming above-mentioned prior art, a kind of X-band wide band high-gain, low friendship ultimate ratio Dual-polarized Micro Strip Array is provided to arrange, it adopts the new technology such as photon crystal structure, left-handed materials coating, again by increasing parasitic patch and the ingehious design to antenna array feeding network, make it have the electric property that broadband, high-isolation, high-gain, low-cross polarization level and low graing lobe level etc. are good, simultaneously lightweight, profile is low, manufacture is simple, easily combine with active device.
The object of patent of the present invention solves by the following technical programs:
This X-band wide band high-gain, low friendship ultimate ratio Dual-polarized Micro Strip Array leu time by: left-handed materials coating, inverted parasitic patch layer, Rohacell31HF foam support layer, to polarize containing the antenna horizontal polarization coplanar wave guide feedback layer of radiating element, antennas orthogonal aperture-coupled layer, microstrip antenna array fixed cavity, metallic reflection plate and radio frequency connector group form.
The pitching ground roll beam width of above-mentioned often row radiating element is 7 °, gain 15dBi.
Above-mentioned left-handed materials coating, parasitic patch layer, Rohacell31HF foam support layer, antenna horizontal polarization coplanar wave guide feedback layer are bonded together by conducting resinl and are embedded on the corresponding installation step of microstrip antenna array fixed cavity together by the fixed aperture-coupled layer that to polarize to antennas orthogonal of nonmetal screw, metallic reflection plate; Described radio frequency connector bond pads is on antennas orthogonal polarization aperture-coupled layer, and hole in position corresponding with the radio frequency connector in radio frequency connector group on metallic reflection plate, radio frequency connector is passed smoothly.
Above-mentioned inverted parasitic patch layer, antenna horizontal polarization coplanar wave guide feedback layer, antennas orthogonal polarization aperture-coupled layer all adopts ROGERSRT/duroid5880 double-sided copper-clad medium sheet material, DIELECTRIC CONSTANT ε
r=2.2, material tangent angle loss tan δ=0.0009, dielectric-slab thickness 1.5mm, the dual coating of dielectric-slab has the Copper Foil of thickness 36 μm.
Above-mentioned foam support layer adopts Rohacell31HF material, and dielectric constant is ε
r=1.04, tangent angle loss tan δ=0.0017.
Further, on the Copper Foil in antenna horizontal polarization coplanar wave guide feedback layer front, square-shaped radiation paster is etched by light technology of painting, the radiation fin length of side is 0.25 λ ~ 0.27 λ, between radiation fin, spacing is 0.86 λ ~ 0.88 λ, antenna structure is an elementary cell with four chip units, the left side two unit becomes vertical plane mirror image with the right two unit and adopts anti-phase feed between self unit, adopts parallel feed between each elementary cell; Mushroom type photon crystal structure is etched between the front array of antenna horizontal polarization coplanar wave guide feedback layer, photonic crystal elements is the square patch of the length of side 0.1 λ, between photonic crystal elements, gap is 0.01 λ, there is the metallization via hole of diameter 0.014 λ at photonic crystal elements center, and the distance between photon crystal structure edge and radiation patch is 0.2 λ; The reverse side Copper Foil of antenna horizontal polarization coplanar wave guide feedback layer departs from radiation patch center 1-2mm lower position and open " hourglass " type coupling slot, make energy be coupled to radiating element from antennas orthogonal polarization aperture-coupled layer.
The dielectric-slab front lighting of above-mentioned antennas orthogonal polarization aperture-coupled layer paints " hourglass " type coupling slot etched with co-planar waveguide feed layer same position, same shape, and dielectric-slab reverse side light paints etching antenna battle array perpendicular polarization feeding network.
Above-mentioned metallic reflection plate adopts the aluminium sheet of thickness δ=1.5mmm; Be positioned over 0.25 λ place immediately below antennas orthogonal polarization aperture-coupled layer, wherein λ is the air medium wavelength that antenna is corresponding when centre frequency works.
Above-mentioned microstrip antenna array fixed cavity is provided with fix up an aerial wire the installation step of horizontal polarization coplanar wave guide feedback layer, antennas orthogonal polarization aperture-coupled layer, metallic reflection plate.
Compared with prior art, there is following useful technique effect:
(1) patent of the present invention is made up of eight row microstrip antenna array elements; Antenna array element is multi-layer microstrip antenna, parasitic patch, antenna horizontal polarization coplanar wave guide feedback layer, perpendicular polarization aperture-coupled layer are all be etched in (light paints precision ± 0.02mm) on the obverse and reverse of dielectric-slab by the light technology of painting, and ensure that the realizability of mentality of designing from technique; Simultaneously micro-band forms overcomes the shortcoming of conventional waveguide antenna, have light structure, volume little, lightweight, be easy to transport, install and erection.
(2) and micro-its antenna axial direction of band dual polarized antenna of prior art hand over ultimate ratio between-15dBi ~-20dBi, polarization interport isolation≤-28dBi, and the Dual-polarized Micro Strip Array that patent of the present invention provides is listed in ° sweep limits of azimuth plane ± 30, axially hand over ultimate ratio≤-37dBi, antenna polarization interport isolation≤-38dBi.
(3) patent of the present invention adopts the new technology such as left-handed materials coating and photon crystal structure, effectively can reduce the mutual coupling between antenna side lobe, graing lobe and array.
Accompanying drawing explanation
Fig. 1 is X-band wide band high-gain, low friendship ultimate ratio Dual-polarized Micro Strip Array row whole structure figure;
Fig. 2 is X-band wide band high-gain, low friendship ultimate ratio Dual-polarized Micro Strip Array row broken away view;
Fig. 3 is parasitic patch layer vertical view;
Fig. 4 is antenna horizontal polarization coplanar wave guide feedback layer (containing radiation fin) vertical view;
Fig. 5 is antennas orthogonal polarization aperture-coupled layer vertical view;
Fig. 6 is metallic reflection plate vertical view;
Fig. 7 is antenna standing wave (VSWR) curve;
Fig. 8 is isolation between antennas curve;
Fig. 9 is antenna gain patterns;
Figure 10 is that antenna cross-polarization compares curve.
Embodiment
Below in conjunction with accompanying drawing, patent of the present invention is described in further detail:
As shown in Figure 1, X-band wide band high-gain of the present utility model, low friendship ultimate ratio Dual-polarized Micro Strip Array arrange, this Dual-polarized Micro Strip Array row 1 are formed by eight row microstrip antenna array elements (the pitching ground roll beam width of array element is 7 °, gain 15dBi).Wherein, as Fig. 2, these Dual-polarized Micro Strip Array row 1 comprise left-handed materials coating 2, inverted parasitic patch layer 3, Rohacell31HF foam support layer 4, containing the antenna horizontal polarization coplanar wave guide feedback layer 5 of radiating element, antennas orthogonal polarization aperture-coupled layer 6, microstrip antenna array fixed cavity 7, metallic reflection plate 8 and radio frequency connector group 9.
See Fig. 2: left-handed materials coating 2, parasitic patch layer 3, Rohacell31HF foam support layer 4, antenna horizontal polarization coplanar wave guide feedback layer 5 is bonded together by conducting resinl and is embedded on the corresponding installation step of microstrip antenna array fixed cavity together by the fixed aperture-coupled layer 6 that to polarize to antennas orthogonal of nonmetal screw, metallic reflection plate 8, radio frequency connector bond pads is on antennas orthogonal polarization aperture-coupled layer 6, position boring corresponding with radio frequency connector on metallic reflection plate 8, ensures that radio frequency connector passes smoothly.
As shown in Fig. 3,4,5: patent of the present invention inverted parasitic patch layer 3, antenna horizontal polarization coplanar wave guide feedback layer (containing radiating element) 5, antennas orthogonal polarization aperture-coupled layer 6 all adopts external imported material ROGERSRT/duroid5880 double-sided copper-clad medium sheet material, DIELECTRIC CONSTANT ε
r=2.2, material tangent angle loss tan δ=0.0009, dielectric-slab thickness 1.5mm, the dual coating of dielectric-slab has the Copper Foil of thickness 36 μm, and this material medium loss is little, stable performance.
See Fig. 2, above left-handed materials coating 2 can reduce minor level and graing lobe level, strengthens main lobe direction.Using left-handed materials as antenna cover layer, electromagnetic wave is subject to the scattering process of left-handed materials negative index, wave beam can only perpendicular to antenna direction very among a small circle in propagate, other directions will be restricted, this will improve the directivity of antenna effectively, strengthen main lobe, also can weaken secondary lobe and graing lobe, the thickness of left-handed materials coating 2 chooses 0.1 λ according to theoretical empirical.
See Fig. 3, above inverted parasitic patch layer 3 can the working band of broadening antenna, and the similar radome effect of this parasitic patch layer medium can play protection to antenna.Square patch in parasitic patch layer 3 is painted technique by light and is etched on Copper Foil and form, the paster length of side is 0.3 λ, between single-row paster, spacing is 0.87 λ, distance between row and row paster is 0.76 λ, there is mutual coupling effect in this parasitic patch layer 3 and antenna horizontal polarization coplanar wave guide feedback layer 5, can the bandwidth of operation of effective broadening antenna.
Adopt Rohacell31HF material as support foam, the dielectric constant of this material is ε
r=1.04, tangent angle loss tan δ=0.0017, with air similar nature, less on the electric property impact of antenna, effectively can reduce the overall weight of antenna simultaneously.
As shown in Figure 4, antenna horizontal polarization coplanar wave guide feedback layer (containing radiation fin) 5, this layer is the main radiating layer of antenna array, the perpendicular polarization of antenna and horizontal polarization are respectively from two orthogonal edged feeders of square-shaped radiation sheet, this layer of Facad structure is an elementary cell with four chip units, the left side two unit becomes vertical plane mirror image with the right two unit, but all adopts the anti-phase feed of horizontal polarization, perpendicular polarization homophase feed.Parallel feed is adopted between each elementary cell, and placed between cells by conversion band, avoid the bending of conversion band, the feeder line amplitude and the phase place that make to convert band both sides are more balanced, thus make the directional diagram of whole linear array less with the impact of frequency change, be also conducive to cross-polarized suppression.
On the Copper Foil in antenna horizontal polarization coplanar wave guide feedback layer (containing radiating element) 5 front, square-shaped radiation paster is etched by light technology of painting, the radiation fin length of side is 0.25 λ ~ 0.27 λ, between radiation fin, spacing is 0.86 λ ~ 0.88 λ, antenna structure is an elementary cell with four chip units, the left side two unit becomes vertical plane mirror image with the right two unit and adopts anti-phase feed between self unit, adopts parallel feed between each elementary cell; The reverse side Copper Foil of antenna horizontal polarization coplanar wave guide feedback layer (containing radiating element) 5 departs from radiation patch center 1-2mm lower position and open " hourglass " type coupling slot, energy is coupled to radiating element from antennas orthogonal polarization aperture-coupled layer 6.
As shown in Figure 4, antenna horizontal polarization co-planar waveguide layer 5, Mushroom type photon crystal structure is etched between this layer of array feeder line, microwave section photon crystal structure his-and-hers watches ground roll has the effect of frequency band gap, when surface wave wavelength and photonic crystal adjoining dimensions, surface wave will be fallen in this band gap, thus reaches inhibitory action.Therefore, in patent of the present invention, utilize photonic crystal to suppress surface wave, and then reduce the mutual coupling between array.In this kind of structure, photonic crystal elements is the square patch of the length of side 0.1 λ, between photonic crystal elements, gap is 0.01 λ, and there is the metallization via hole of diameter 0.014 λ at photonic crystal elements center, and the distance between photon crystal structure edge and radiation patch is 0.2 λ.
As shown in Figure 5, the dielectric-slab front lighting of antennas orthogonal polarization aperture-coupled layer 6 paints " hourglass " type coupling slot etched with co-planar waveguide feed layer 5 same position, same shape, and dielectric-slab reverse side light paints etching antenna battle array perpendicular polarization feeding network.
As shown in Figure 6: metallic reflection plate 8, adopt the aluminium sheet of thickness δ=1.5mmm, the surface smoothness of aluminium sheet is good; Be positioned over 0.25 λ (λ is the air medium wavelength that antenna is corresponding when centre frequency works) place immediately below antennas orthogonal polarization aperture-coupled layer 6.Holing in position corresponding with radio frequency connector group on metallic reflection plate 8, ensures that radio frequency connector group passes smoothly.
Microstrip antenna array fixed cavity 7, this cavity mills out the installation step of antenna horizontal polarization coplanar wave guide feedback layer (containing radiating element) 5, antennas orthogonal polarization aperture-coupled layer 6, metallic reflection plate 8.
As shown in Fig. 7,8,9,10, X-band wide band high-gain of the present utility model, low friendship ultimate ratio Dual-polarized Micro Strip Array row simulation result show: antenna standing wave VSWR < 1.3, the isolation S of two, antenna polarization port
21<-38dBi, the directional diagram gain G>=25dBi of antenna, antenna cross-polarization ratio≤-37dBi; This microstrip antenna array is compared with conventional waveguide antenna simultaneously, and volume is little, lightweight, structure simple, be conducive to transport and the installation of antenna.
Claims (8)
1. an X-band wide band high-gain, low friendship ultimate ratio Dual-polarized Micro Strip Array row, it is characterized in that, described Dual-polarized Micro Strip Array row (1) successively by: left-handed materials coating (2), inverted parasitic patch layer (3), Rohacell31HF foam support layer (4), to polarize containing antenna horizontal polarization coplanar wave guide feedback layer (5) of radiating element, antennas orthogonal aperture-coupled layer (6), microstrip antenna array fixed cavity (7), metallic reflection plate (8) and radio frequency connector group (9) form; Described left-handed materials coating (2), parasitic patch layer (3), Rohacell31HF foam support layer (4), to be bonded together by conducting resinl containing antenna horizontal polarization coplanar wave guide feedback layer (5) of radiating element and fixed by nonmetal screw, and to polarize together with aperture-coupled layer (6), metallic reflection plate (8) with antennas orthogonal and be embedded on the corresponding installation step of microstrip antenna array fixed cavity (7); Described radio frequency connector group (9) is welded on antennas orthogonal polarization aperture-coupled layer (6), hole in the upper position corresponding with the radio frequency connector in radio frequency connector group (9) of metallic reflection plate (8), radio frequency connector is passed.
2. X-band wide band high-gain according to claim 1, low friendship ultimate ratio Dual-polarized Micro Strip Array row, it is characterized in that, the pitching ground roll beam width of described radiating element is 7 °, gain 15dBi.
3. X-band wide band high-gain according to claim 1, low friendship ultimate ratio Dual-polarized Micro Strip Array row, it is characterized in that, inverted parasitic patch layer (3), containing radiating element antenna horizontal polarization coplanar wave guide feedback layer (5), antennas orthogonal polarization aperture-coupled layer (6) all adopt ROGERSRT/duroid5880 double-sided copper-clad medium sheet material, DIELECTRIC CONSTANT ε
r=2.2, material tangent angle loss tan δ=0.0009, dielectric-slab thickness 1.5mm, the dual coating of described double-sided copper-clad medium sheet material has the Copper Foil of thickness 36 μm.
4. X-band wide band high-gain according to claim 1, low friendship ultimate ratio Dual-polarized Micro Strip Array row, it is characterized in that, described foam support layer (4) adopts Rohacell31HF material, and dielectric constant is ε
r=1.04, tangent angle loss tan δ=0.0017.
5. X-band wide band high-gain according to claim 1, low friendship ultimate ratio Dual-polarized Micro Strip Array row, it is characterized in that, on the Copper Foil in antenna horizontal polarization coplanar wave guide feedback layer (5) front containing radiating element, square-shaped radiation paster is etched by light technology of painting, the radiation fin length of side is 0.25 λ ~ 0.27 λ, between radiation fin, spacing is 0.86 λ ~ 0.88 λ, antenna structure is an elementary cell with four chip units, the left side two chip unit becomes vertical plane mirror image with the right two chip unit and adopts anti-phase feed between four chip units, parallel feed is adopted between each elementary cell, Mushroom type photon crystal structure is etched between front array containing antenna horizontal polarization coplanar wave guide feedback layer (5) of radiating element, photonic crystal elements is the square patch of the length of side 0.1 λ, between photonic crystal elements, gap is 0.01 λ, there is the metallization via hole of diameter 0.14 λ at photonic crystal elements center, and the distance between photon crystal structure edge and radiation patch is 0.2 λ, reverse side Copper Foil containing antenna horizontal polarization coplanar wave guide feedback layer (5) of radiating element departs from radiation patch center 1-2mm lower position and open " hourglass " type coupling slot, make energy be coupled to radiating element from antennas orthogonal polarization aperture-coupled layer (6).
6. X-band wide band high-gain, low friendship ultimate ratio Dual-polarized Micro Strip Array arrange according to claim 1 or 5, it is characterized in that, the dielectric-slab front lighting of described antennas orthogonal polarization aperture-coupled layer (6) is painted etching and contains antenna horizontal polarization coplanar wave guide feedback layer (5) same position of radiating element, " hourglass " type coupling slot of same shape, and dielectric-slab reverse side light paints etching antenna battle array perpendicular polarization feeding network.
7. X-band wide band high-gain according to claim 1, low friendship ultimate ratio Dual-polarized Micro Strip Array row, it is characterized in that, described metallic reflection plate (8) adopts thickness δ to be the aluminium sheet of 1.5mmm; Be positioned over 0.25 λ place immediately below antennas orthogonal polarization aperture-coupled layer (6), wherein λ is the air medium wavelength that antenna is corresponding when centre frequency works.
8. X-band wide band high-gain according to claim 1, low friendship ultimate ratio Dual-polarized Micro Strip Array row, it is characterized in that, described microstrip antenna array fixed cavity (7) is provided with in order to install containing radiating element antenna horizontal polarization coplanar wave guide feedback layer (5), antennas orthogonal polarization aperture-coupled layer (6), metallic reflection plate (8) installation step.
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| CN104577354A (en) * | 2015-01-30 | 2015-04-29 | 佛山澳信科技有限公司 | Antenna special for track |
| CN106099342A (en) * | 2016-07-04 | 2016-11-09 | 西安电子科技大学 | A kind of Meta Materials coating double frequency phased-array antenna |
| CN107196067B (en) * | 2017-06-14 | 2023-09-29 | 复旦大学 | Circular polarization back cavity waveguide slot array antenna realized by near field coupling polarizer |
| CN107882492B (en) * | 2017-12-11 | 2023-10-27 | 重庆工业职业技术学院 | Millimeter wave antenna glass window |
| CN107978840B (en) * | 2017-12-25 | 2023-10-17 | 合肥若森智能科技有限公司 | Dual-polarized antenna feed source array assembly |
| CN108417971B (en) * | 2018-03-26 | 2024-06-21 | 广东纳睿雷达科技股份有限公司 | Dual polarized antenna array and dual polarized phased array antenna |
| CN108461929B (en) * | 2018-03-28 | 2024-03-15 | 广东纳睿雷达科技股份有限公司 | Dual polarized antenna array and dual polarized phased array antenna |
| CN110797649B (en) * | 2019-11-11 | 2021-08-24 | 中国电子科技集团公司第十四研究所 | Broadband dual-polarization microstrip antenna sub-array with filtering and scaling functions |
| CN111029791A (en) * | 2019-12-20 | 2020-04-17 | 中国电波传播研究所（中国电子科技集团公司第二十二研究所） | Tightly coupled dipole reflection antenna array |
| CN111180868B (en) * | 2019-12-30 | 2022-07-15 | 中国电子科技集团公司第十四研究所 | Satellite-borne SAR dual-polarization microstrip radiation subarray antenna |
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| CN101098048A (en) * | 2006-06-30 | 2008-01-02 | 株式会社摩拓尼斯 | Dual polarization satellite antenna |
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