CN105048110A - Ultra-wideband dual-polarized antenna oscillator employing fractal hollow design - Google Patents
Ultra-wideband dual-polarized antenna oscillator employing fractal hollow design Download PDFInfo
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Abstract
The invention provides an ultra-wideband dual-polarized antenna oscillator employing a fractal hollow design. The ultra-wideband dual-polarized antenna oscillator comprises a reflector plate and an integrally molded main oscillator body, wherein the main oscillator body comprises an oscillator radiation element and a balun bracket; the oscillator radiation element comprises four oscillator radiation sheets; each oscillator radiation sheet is in a diamond-type plane structure; the four oscillator radiation sheets are arranged around the top points as the centers in a coplanar manner; a gap is reserved between the adjacent oscillator radiation sheets; the fractal hollow design is adopted for each oscillator radiation sheet; and the oscillator radiation element is supported by the balun bracket. According to the ultra-wideband dual-polarized antenna oscillator, through the arrangement of the oscillator radiation sheets in the diamond-type plane structure, the voltage standing wave ratio (VSWR) when the ultra-wideband dual-polarized antenna oscillator works within a frequency range of 680-960MHz is smaller than or equal to 1.4; the antenna with a relatively uniform beam width within the width 3dB in the horizontal plane can be realized; the overall oscillator is integrally fabricated and molded by a die-casting technology; and the ultra-wideband dual-polarized antenna oscillator has the characteristics of attractive appearance, small size, low profile, stable structure property and good consistency, and meets the development requirements of mobile communication at present.
Description
Technical field
The present invention relates to antenna of mobile communication base station, particularly relate to a kind of fractal hollow out design ultra-wideband dual-polarized antenna oscillator.
Background technology
FDD-LTE is the Long Term Evolution of communication, global standards, a kind of trend that Communication Development is evolved, it improves the aerial access technology of the information that enhances, there is high data transmission rate, grouping queries, low delay, cover the advantages such as wide and backward compatible, but because existing FDD-LTE antenna oscillator mostly is arrowband frequency range (790-870MHz/806-960MHz), this arrowband frequency range is difficult to meet communication base station construction instantly and multisystem is set up and the demand of quorum sensing inhibitor and cost is high, therefore the exploitation of the dual polarized antenna of FDD-LTE ultra-wideband is the emphasis of current antenna research and development, and as the elementary cell FDD-LTE ultra-wideband dual polarization vibrator of composition FDD-LTE antenna array exploitation and optimize particularly important especially.
Summary of the invention
The object of the invention is to solve get over high frequency band because of frequency relatively can be wider, and along with low-frequency bandwidth of falling of frequency can be more and more narrow, the problem such as broadband and ultrabroad band cannot be realized in low-frequency range, propose a kind of fractal hollow out design ultra-wideband dual-polarized antenna oscillator that can realize ultra broadband in low-frequency range.
For reaching this object, the present invention by the following technical solutions:
A kind of fractal hollow out design ultra-wideband dual-polarized antenna oscillator, comprises reflecting plate and integrated vibrator body;
Described vibrator body comprises vibrator radiating unit and Ba Lun support; Described vibrator radiating unit comprises four element radiates sheets, and element radiates sheet described in every sheet is brilliant planar structure; Four described element radiates sheets around coplanar arrangement, leave gap between adjacent described element radiates sheet centered by summit; Element radiates sheet described in every sheet adopt fractal hollow out design; Vibrator radiating unit described in described Ba Lun stent support.
Preferably, described in every sheet, the back side of element radiates sheet is provided with the two water conservancy diversion arm of V-arrangement.
Preferably, described in every sheet, the back side of element radiates sheet is provided with multiple coupling detail.
Preferably, described Ba Lun support comprises U-shaped Ba Lun and gradual change Ba Lun; Described U-shaped Ba Lun supports described vibrator radiating unit, and described gradual change Ba Lun is installed on described U-shaped Ba Lun, and is positioned at the V-arrangement angle place of the two water conservancy diversion arm of described V-arrangement.
Preferably, described in every sheet, the back side of element radiates sheet is provided with one or more diversion column over the ground, and the side of described diversion column is over the ground connected with the two water conservancy diversion arm of described V-arrangement.
Preferably, adjacent described element radiates sheet is centered by the extending line intersection point of apex centerline, biased in 90 degree of isogonisms.
Preferably, described element radiates sheet is divided into first group and second group relatively by summit, and wherein the summit of described element radiates sheet of first group is provided with depression, and the summit of the element radiates sheet described in second group is provided with projection,
Summit has the summit place of the wherein a slice of element radiates sheet described in the two panels of depression to be provided with cable core, and the summit place of another sheet is provided with feeder pillar; Described in the two panels that summit is protruded, the summit place of wherein a slice of element radiates sheet is provided with cable core, and the summit place of another sheet is provided with feeder pillar;
Described in the two panels that summit has element radiates sheet described in the two panels of depression and summit to protrude, element radiates sheet is all connected to form two electrode couple by feed tab; Respectively there is a power feed hole one end of feed tab described in two, and the other end respectively has cable core string holes; Described feed tab is connected with described cable core and feeder pillar with cable core string holes by described power feed hole;
Two pairs of described dipoles all adopt coaxial cable direct feed, and described coaxial cable is placed along the U-lag below described gradual change Ba Lun, and the described cable core of described coaxial cable is welded on one end of described feed tab, and outer conductor is welded in the U-lag of gradual change Ba Lun.
Preferably, described vibrator body is coated with antioxidant anticorrosive coating.
Preferably, the described fractal hollow out design on element radiates sheet described in every sheet is made up of the fractal hole of engraving of the polygon gradual change of difference.
The present invention is by arranging the element radiates sheet of brilliant planar structure, make VSWR≤1.4 be operated in the frequency range of 680-960MHz, the antenna compared with homogeneous wave beam width in horizontal plane 3dB width can be realized, whole oscillator adopts extrusion process integration system to do shaping, there is good looking appearance, volume is little, section is low, and structural behaviour stablizes the feature good with consistency, meets the needs of current mobile communications development.
Accompanying drawing explanation
Fig. 1 is stereochemical structure front schematic view of the present invention.
Fig. 2 is the enlarged drawing at the A place of Fig. 1.
Fig. 3 is stereochemical structure schematic rear view of the present invention.
Fig. 4 is the enlarged drawing at the B place of Fig. 3.
Fig. 5 is the antenna oscillator directional diagram of the present invention 45 degree polarization.
Fig. 6 is the antenna oscillator directional diagram of-45 degree polarization of the present invention.
Fig. 7 is the actual measurement standing-wave ratio figure of the present invention 45 degree polarization.
Fig. 8 is the actual measurement standing-wave ratio figure that the present invention-45 spends polarization.
Fig. 9 is the measured waveform figure of isolation of the present invention.
Wherein: vibrator radiating unit 1, Ba Lun support 2, engrave hole 3, the two water conservancy diversion arm 4 of V-arrangement, coupling detail 5, over the ground diversion column 6, feed tab 7, coaxial cable 8, feeder pillar 9, cable core 10, element radiates sheet 11, U-shaped Ba Lun 21, gradual change Ba Lun 22.
Embodiment
Technical scheme of the present invention is further illustrated by embodiment below in conjunction with accompanying drawing.
A kind of fractal hollow out design ultra-wideband dual-polarized antenna oscillator, comprises reflecting plate and integrated vibrator body;
Described vibrator body comprises element radiates list 1 and Ba Lun support 2; Described vibrator radiating unit 1 comprises four element radiates sheets 11, and described in every sheet, element radiates sheet 11 is in brilliant planar structure; Four described element radiates sheets 11 around coplanar arrangement, leave gap between adjacent described element radiates sheet 11 centered by summit; Element radiates sheet 11 described in every sheet is provided with and engraves hole 3; Described Ba Lun support 2 supports described vibrator radiating unit 1.
As depicted in figs. 1 and 2, adopt integrated vibrator body, contribute to the stability of oscillator, ensure that the electrical property of antenna; Described vibrator body comprises vibrator radiating unit 1 and Ba Lun support 2; Described vibrator radiating unit 1 comprises four element radiates sheets 11, and described in every sheet, element radiates sheet 11 is in brilliant planar structure; Four described element radiates sheets 11 around coplanar arrangement, leave gap between adjacent described element radiates sheet 11 centered by summit; Element radiates sheet 11 described in every sheet is provided with and engraves hole 3; Such design reduces the size of described vibrator radiating unit 1, due to the described symmetry of vibrator radiating unit 1, the raising of balance, improves the isolation between dual polarization further.The present invention arranges the element radiates sheet of brilliant planar structure, through design of Simulation and test, fractal hollow out design forming cross section is the element radiates sheet 11 of diamond planar structure, such design effect makes VSWR≤1.4 be operated in the frequency range of 680-960MHz, the antenna compared with homogeneous wave beam width in horizontal plane 3dB width can be realized, whole oscillator adopts extrusion process integration system to do shaping, there is good looking appearance, volume is little, section is low, structural behaviour stablizes the feature good with consistency, meets the needs of current mobile communications development.
Illustrate at this, through design of Simulation and test result as shown in Figures 5 to 9, Fig. 5 and Fig. 6 is antenna oscillator directional diagram; Fig. 7, Fig. 8 and Fig. 9 are measured waveform figure.
Illustrate at this, described reflecting plate is the state of the art, does not belong to inventive point of the present invention, does not therefore draw in the drawings.
Preferably, described in every sheet, the back side of element radiates sheet 11 is provided with the two water conservancy diversion arm 4 of V-arrangement.
Unnecessary electric current consumes by the two water conservancy diversion arm 4 of described V-arrangement, makes each radiating surface more all even stable.
Preferably, described in every sheet, the back side of element radiates sheet 11 is provided with multiple coupling detail 5.
Impedance in described coupling detail 5 pairs of frequency ranges is mated, and suppress the larger reflected current formed in oscillator back side feed placement, if do not eliminated, the S parameter of whole oscillator will be a greater impact simultaneously.
Preferably, described Ba Lun support 2 comprises U-shaped Ba Lun 21 and gradual change Ba Lun 22; Described U-shaped Ba Lun 21 supports described vibrator radiating unit 1, and described gradual change Ba Lun 22 is installed on described U-shaped Ba Lun 21, and is positioned at the V-arrangement angle place of the two water conservancy diversion arm 4 of described V-arrangement.
The described Ba Lun support 2 be made up of described U-shaped Ba Lun 21 and described gradual change Ba Lun 22, is combined into the Broadband Matching that synthetic wideband Ba Lun realizes antenna element, achieves the width of frequency bandwidth.Vibrator radiating unit 1 and multiple Ba Lun are carried out combined integratedization, ultra-wideband design, make unit volume achieve miniaturization, bandwidth, oscillator processing integration, makes this antenna element consistency be greatly improved.
Preferably, described in every sheet, the back side of element radiates sheet 11 is provided with one or more diversion column over the ground 6, and the side of described diversion column over the ground 6 is connected with the two water conservancy diversion arm 4 of described V-arrangement.
Unnecessary electric current on two for described V-arrangement water conservancy diversion arm 4 can be carried out further decay downwards by described diversion column over the ground 6, make the CURRENT DISTRIBUTION on element radiates sheet 11 described in each more all even stable, the coherence of dual-port is diminished, thus the isolation that improve between unit two-port and cross polarization discrimination.
Preferably, adjacent described element radiates sheet is centered by the extending line intersection point of apex centerline, biased in 90 degree of isogonisms.
Adjacent described element radiates sheet 11 center is that 90 degree of isogonisms are biased, to form two groups of symmetrical cell of dual polarization vibrator.
Preferably, described element radiates sheet is divided into first group and second group relatively by summit, and wherein the summit of described element radiates sheet of first group is provided with depression, and the summit of the element radiates sheet described in second group is provided with projection,
Summit has the summit place of the wherein a slice of element radiates sheet 11 described in the two panels of depression to be provided with cable core 10, and the summit place of another sheet is provided with feeder pillar 9; Described in the two panels that summit is protruded, the summit place of wherein a slice of element radiates sheet 11 is provided with cable core 10, and the summit place of another sheet is provided with feeder pillar 9;
Described in the two panels that summit has element radiates sheet 11 described in the two panels of depression and summit to protrude, element radiates sheet 11 is all connected to form two electrode couple by feed tab 7; Described in two, respectively there is a power feed hole one end of feed tab 7, and the other end respectively has cable core string holes; Described feed tab 7 is connected with described cable core 10 and feeder pillar 9 with cable core string holes by described power feed hole;
Two pairs of described dipoles all adopt coaxial cable 8 direct feed, described coaxial cable 8 is placed along the U-lag below described gradual change Ba Lun 22, the described cable core 10 of described coaxial cable 8 is welded on one end of described feed tab 7, and outer conductor is welded in the U-lag of gradual change Ba Lun 22.
Described coaxial cable 8 is placed along the U-lag below described gradual change Ba Lun 22, and the described cable core 10 of described coaxial cable is welded on one end of feed tab 7, and outer conductor is welded in the U-lag of gradual change Ba Lun 22, and such structure is simple, easily realizes.Adopt described feed tab 7 to replace feed line, decrease the contact between different metal, be conducive to the harmful effect reducing third order intermodulation.Adopt the direct feed of described coaxial cable 8, make electric performance stablity reliable, consistency is good.
Preferably, described vibrator body is coated with antioxidant anticorrosive coating.
Described vibrator body is coated with antioxidant anticorrosive coating, can prevent its oxidation, corrodes and cause its hydraulic performance decline, make performance more reliable and more stable.
Preferably, the described fractal hollow out design on element radiates sheet 11 described in every sheet is made up of the fractal hole 3 of engraving of the polygon gradual change of difference.
Described hole 3 of engraving, centered by described element radiates sheet 11 summit, is outwards distributed from small to large by center and engraves the element radiates sheet 11 that design forming cross section in hole is diamond planar structure; The above structural design of engraving hole 3 can combine with the described element radiates sheet 11 of diamond planar structure.
Preferred further, described fractal hollow out design on element radiates sheet 11 described in every sheet is engraved hole 3 by the polygon gradual change of the four described differences of row and is formed, engrave hole 3 quantity described in two row of both sides identical, and centered by described element radiates sheet 11 summit, distribute from small to large from inside to outside; Engrave hole 3 quantity described in two middle row identical, and centered by described element radiates sheet 11 summit, distribute from small to large from inside to outside; The quantity in hole 3 is engraved few with the effect realizing the overall alignment fractal hollow out design of gradual change gradually described in two row in the middle of the number ratio of engraving hole 3 described in two row of both sides.
Above structural design is more attractive in appearance with integrally-built profile of mating, and overall performance electrical performance is more stable.
Below know-why of the present invention is described in conjunction with specific embodiments.These describe just in order to explain principle of the present invention, and can not be interpreted as limiting the scope of the invention by any way.Based on explanation herein, those skilled in the art does not need to pay performing creative labour can associate other embodiment of the present invention, and these modes all will fall within protection scope of the present invention.
Claims (9)
1. a fractal hollow out design ultra-wideband dual-polarized antenna oscillator, is characterized in that: comprise reflecting plate and integrated vibrator body;
Described vibrator body comprises vibrator radiating unit and Ba Lun support; Described vibrator radiating unit comprises four element radiates sheets, and element radiates sheet described in every sheet is brilliant planar structure; Four described element radiates sheets around coplanar arrangement, leave gap between adjacent described element radiates sheet centered by summit; Element radiates sheet described in every sheet adopt fractal hollow out design; Vibrator radiating unit described in described Ba Lun stent support.
2. fractal hollow out design ultra-wideband dual-polarized antenna oscillator according to claim 1, is characterized in that: described in every sheet, the back side of element radiates sheet is provided with the two water conservancy diversion arm of V-arrangement.
3. fractal hollow out design ultra-wideband dual-polarized antenna oscillator according to claim 2, is characterized in that: described in every sheet, the back side of element radiates sheet is provided with multiple coupling detail.
4. fractal hollow out design ultra-wideband dual-polarized antenna oscillator according to claim 3, is characterized in that: described Ba Lun support comprises U-shaped Ba Lun and gradual change Ba Lun; Described U-shaped Ba Lun supports described vibrator radiating unit, and described gradual change Ba Lun is installed on described U-shaped Ba Lun, and is positioned at the V-arrangement angle place of the two water conservancy diversion arm of described V-arrangement.
5. fractal hollow out design ultra-wideband dual-polarized antenna oscillator according to claim 4, it is characterized in that: described in every sheet, the back side of element radiates sheet is provided with one or more diversion column over the ground, the side of described diversion column is over the ground connected with the two water conservancy diversion arm of described V-arrangement.
6. fractal hollow out design ultra-wideband dual-polarized antenna oscillator according to claim 5, is characterized in that: adjacent described element radiates sheet is centered by the extending line intersection point of apex centerline, biased in 90 degree of isogonisms.
7. fractal hollow out design ultra-wideband dual-polarized antenna oscillator according to claim 6, it is characterized in that: described element radiates sheet is divided into first group and second group relatively by summit, wherein the summit of described element radiates sheet of first group is provided with depression, the summit of the element radiates sheet described in second group is provided with projection
Summit has the summit place of the wherein a slice of element radiates sheet described in the two panels of depression to be provided with cable core, and the summit place of another sheet is provided with feeder pillar; Described in the two panels that summit is protruded, the summit place of wherein a slice of element radiates sheet is provided with cable core, and the summit place of another sheet is provided with feeder pillar;
Described in the two panels that summit has element radiates sheet described in the two panels of depression and summit to protrude, element radiates sheet is all connected to form two electrode couple by feed tab; Respectively there is a power feed hole one end of feed tab described in two, and the other end respectively has cable core string holes; Described feed tab is connected with described cable core and feeder pillar with cable core string holes by described power feed hole;
Two pairs of described dipoles all adopt coaxial cable direct feed, and described coaxial cable is placed along the U-lag below described gradual change Ba Lun, and the described cable core of described coaxial cable is welded on one end of described feed tab, and outer conductor is welded in the U-lag of gradual change Ba Lun.
8. fractal hollow out design ultra-wideband dual-polarized antenna oscillator according to claim 7, is characterized in that: described vibrator body is coated with antioxidant anticorrosive coating.
9. fractal hollow out design ultra-wideband dual-polarized antenna oscillator according to claim 1, is characterized in that: the described fractal hollow out design on element radiates sheet described in every sheet is made up of the fractal hole of engraving of the polygon gradual change of difference.
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| CN108232401A (en) * | 2018-01-02 | 2018-06-29 | 广东盛路通信科技股份有限公司 | High-performance UWB Antenna oscillator |
| CN110350318A (en) * | 2019-08-06 | 2019-10-18 | 北京布科思科技有限公司 | A kind of ultra wide band circular polarisation omnidirectional antenna |
| CN110752438A (en) * | 2019-11-05 | 2020-02-04 | 武汉虹信通信技术有限责任公司 | Dual-polarization FAD radiating element |
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