CN208862166U - The aerial array of high-gain Vivaldi antenna element with miniature size - Google Patents
The aerial array of high-gain Vivaldi antenna element with miniature size Download PDFInfo
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- CN208862166U CN208862166U CN201721600714.1U CN201721600714U CN208862166U CN 208862166 U CN208862166 U CN 208862166U CN 201721600714 U CN201721600714 U CN 201721600714U CN 208862166 U CN208862166 U CN 208862166U
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- slab
- dielectric
- antenna element
- aerial array
- vivaldi antenna
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- 239000002184 metal Substances 0.000 claims abstract description 29
- 229910052751 metal Inorganic materials 0.000 claims abstract description 29
- 238000001465 metallisation Methods 0.000 claims abstract description 11
- 230000005540 biological transmission Effects 0.000 claims abstract description 7
- 230000007704 transition Effects 0.000 claims abstract description 4
- 238000003854 Surface Print Methods 0.000 claims description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 2
- 239000010931 gold Substances 0.000 claims description 2
- 229910052737 gold Inorganic materials 0.000 claims description 2
- 238000013461 design Methods 0.000 abstract description 11
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000005855 radiation Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 241001282153 Scopelogadus mizolepis Species 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
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Abstract
The utility model discloses the high-gain Vivaldi antenna element and aerial array of a kind of miniature size, Vivaldi antenna element includes upper dielectric-slab and lower dielectric-slab；Upper dielectric-slab and lower dielectric-slab, upper dielectric-slab are fixed with lower dielectric-slab, and upper dielectric-slab partial outer face print index type groove gap metal layer, metal layer flank has semi-oval slot, are printed on lower dielectric-slab and metal identical on upper dielectric-slab；Two layers of dielectric-slab inner surface is printed with strip line, and there is the metallization VIA through dielectric-slab in the position that each circular patch of circular metal patch is distributed in the transmission line both sides of strip line to microstrip line transition position.The high-gain Vivaldi antenna element Unequal distance with miniature size arranges to form aerial array, and the ratio between big array element spacing and minimum array element spacing is no more than the octave of antenna；The utility model is more enough under identical size condition to obtain lower cutoff frequency, realizes the Miniaturization Design of antenna.
Description
Technical field
The utility model relates to a kind of ultra-wideband antennas.
Background technique
The demand of modernization radar and communication system to multifunctional equipment is more more and more urgent, and the ultra-wideband antenna of miniaturization exists
Antenna Design field has obtained higher and higher attention.Vivaldi antenna is one kind of ultra-wideband antenna, and theoretically whether there is or not limits for width
Bandwidth, and have good end-fire characteristic.But Vivaldi antenna element size requires to reach low frequency end cut-off frequency point
Half-wavelength, and the miniature antenna design carried out in the past using loading technique needs to pay the cost of gain, therefore is actually answering
With middle there is an urgent need for a kind of high-gain aerial unit with miniature size.
Document 1 (P.J.Gibson, " The Vivaldi aerial, " in Proc.9th Eur.Microw. Conf.,
Brighton, U.K., pp.101-105, Jun.1979.) Vivaldi antenna is proposed, illustrate the broadband of Vivaldi antenna
Characteristic, and Vivaldi antenna is demonstrated with good end-fire radiation characteristic, and theoretically explains Vivaldi antenna
Bandwidth with no limit for width has greatly application prospect.
Document 2 (Madannezhad, A., Ameri, H., Sadeghi, S., &Faraji-Dana, R.A
miniaturized Vivaldi antenna with modified feeding structure for UWB
applications”.International Symposium on Antenna Technology and Applied
Electromagnetics (pp.1-3), 2016.) propose the low-frequency range that can be effectively improved antenna by changing feed structure
With characteristic, antenna is made to obtain miniature size.
Document 3 (Zihao Liu, Yongzhong Zhu, Jian Zhou, " Improved design of vivaldi
antenna with loading resistance for wideband applications,”IEEE Antennas&
Wireless Propagation Letters, pp (99), 286-289.) the small of antenna realized by the method for loading resistor
Typeization design, but loading resistor increases loss, causes the gain of antenna relatively low.
From the foregoing, it will be observed that Vivaldi antenna is easier to realize good radiation characteristic in ultra wide band range, but it is existing
Technology realizes that miniaturization Vivaldi antenna has the shortcomings that loss is high, gain is low etc., and the utility model is designed for antenna miniaturization and mentioned
A kind of new approaches are supplied.
Utility model content
Purpose of utility model: the utility model provides a kind of high-gain Vivaldi antenna list with miniature size
The aerial array of member, which is the miniaturization radar antenna that can be used for ultra wideband frequency, can be realized and is protecting on a wide frequency band
Hold high-gain；The aerial array utilizes the volume of antenna preferably to realize that covering space maximizes.
Utility model content: a kind of high-gain Vivaldi antenna element with miniature size, the antenna element include
Upper layer PCB dielectric-slab and lower layer's PCB dielectric-slab, upper layer PCB dielectric-slab and lower layer's PCB dielectric-slab are fixed by tooling, two layers of Jie
Scutum inner surface is provided with strip line, and it is symmetrical to offer even-even on the transmission line both sides of strip line to microstrip line transition position
The metallization VIA through pcb board, circular metal patch is installed, circular metal patch diameter is greater than gold in metallization VIA
Categoryization via hole；The metallization VIA and circular metal patch have even-even and are symmetrically distributed in transmission line both sides.Upper layer PCB is situated between
The outer surface print index type groove gap metal layer of scutum, the exponential type line of rabbet joint gap bottom end of metal layer are resonant cavity, metal layer two
Flank has semi-oval slot, and lower layer's PCB dielectric-slab outer surface is printed on metal layer identical with upper layer PCB dielectric-slab outer surface.
The semi-oval slot of metal layer flank on upper and lower two layers of dielectric-slab can change electric current along the path at edge,
Being extended by linear distance becomes curve distance, increases current path, can increase a resonance point at low frequency, so that low frequency
Cutoff frequency it is lower, since the size of Vivaldi antenna is generally the half of low-frequency cut-off frequency wavelength, so in same sample ruler
Lower cutoff frequency can be obtained under the conditions of very little can be described as realizing the Miniaturization Design of antenna.Due to antenna miniaturization ratio
Example is related to the arc length of semi-oval slot, if desired further reduces antenna volume, can be by increasing ellipse radii
Etc. modes increase the arc length of semi-oval slot, further decrease the frequency of newly-increased resonance frequency point, reach and more minimize
Purpose.
It arranges to form aerial array using the above-mentioned high-gain Vivaldi antenna element Unequal distance with miniature size,
Ratio between maximum array element spacing and minimum array element spacing is no more than the octave of antenna；The aerial array azimuth dimension is 1
4 units are tieed up in a unit, pitching, and antenna element spacing is respectively 179mm, 36mm and 30mm.
Aerial array provided by the utility model is made of above-mentioned antenna element, completes standing wave by the design to unit
The requirement of bandwidth completes the requirement of beam angle, by adjusting battle array spacing in order to which the volume preferably using antenna is covered to realize
Lid space maximizes, and aerial array is structured the formation using Unequal distance.In view of actual working environment demand, the front of conceptual design can be adopted
It is fed respectively with to unit.And consider that installation requirements are cut antenna medium version, and side has been arrived into feed port setting
Face.
The utility model has the advantages that antenna element disclosed in the utility model can obtain lower cut-off under the conditions of same size
Frequency, realizes the Miniaturization Design of antenna, and possesses good voltage standing wave ratio and high-gain, and the radiation characteristic of antenna is steady
It is fixed.The feed structure of antenna is transitioned into microstrip line by strip line, and engineering is facilitated to apply, and integrated level is high, at low cost, convenient for big
Scale processing.
Aerial array disclosed by the utility model can preferably realize that covering space is maximized using the volume of antenna.
Detailed description of the invention
Fig. 1 is the perspective view of Vivaldi antenna element in the utility model；
Fig. 2 is the main view of Vivaldi antenna element in the utility model；
Fig. 3 is the bottom view of Vivaldi antenna element in the utility model；
Fig. 4 is the hierarchical diagram of Vivaldi antenna element in the utility model；
Fig. 5 is the layout viewing of aerial array in the utility model；
Fig. 6 is the utility model antenna element reflection coefficient and gain curve figure；
Fig. 7 is antenna pattern under the utility model antenna element 11GHz；
Fig. 8 is the antenna element and traditional antenna unit Contrast on effect of the utility model semiellipse type slotted metal layer structure
Figure.
Specific embodiment
A kind of high-gain Vivaldi antenna element with miniature size, the antenna element include as shown in figures 1-4
Upper layer PCB dielectric-slab 1 and lower layer's PCB dielectric-slab 2, two layers of PCB dielectric-slab are fixed using tooling, and upper layer PCB dielectric-slab 1 is under
Layer PCB dielectric-slab 2 selects Arlon DiClad880 medium plate, and overall dimensions are the rectangle of 48mm*60mm, and dielectric is normal
Number εγ=2.2, loss tangent angle σ=0.0009 tan, thickness H=0.79mm；Two layers of dielectric-slab inner surface is provided with strip line
5, the transmission line both sides of strip line 5 to microstrip line transition position be symmetrically distributed with even-even it is symmetrical through PCB dielectric-slab
The metallization VIA 7 of plate, metallization VIA 7 are the through-hole that inside circumference is brushed with one layer of metal layer, are equipped in metallization VIA 7
Circular metal patch 8, wherein the diameter of circular metal patch 8 is 0.7mm, and the diameter of metallization VIA 7 is 0.3mm；Two layers
The outer surface of PCB dielectric-slab is printed with the identical exponential type line of rabbet joint gap metal layer 3 of shape, 3 exponential type line of rabbet joint gap bottom of metal layer
For circular resonant cavity 4,4 diameter D of circular resonant cavityr=4.8mm；The exponential type line of rabbet joint gap of metal layer 3 from circular resonant cavity 4 to
Exponentially type is spread apart outside, exponential line groove width W1=44.8mm；3 liang of flanks of metal layer offer arc-shaped groove 6, the arc
Fluting 6 is specially half elliptic, the length L of flank oval groove1=40mm.
In practical applications, metallization VIA 7 and 8 size of circular metal patch are adjustable, by adjusting the big of the two
The small impedance that can further adjust transmission line itself.
For the arc-shaped groove 6 that 3 liang of flanks of metal layer open up, which is designed as ellipse and current path is increased,
A resonance point can be increased at low frequency and realize the Miniaturization Design of antenna so that the cutoff frequency of low frequency is lower.Such as Fig. 8
Shown, antenna element provided in this embodiment is lower compared to can get under the conditions of same size for traditional antenna element
Cutoff frequency, 15% or so can be reduced by being equivalent to its volume under identical cutoff frequency.
As shown in figure 5, aerial array preferably can utilize the volume of antenna to realize integrally using non-equally structuring the formation
Space is covered to maximize.Array element spacing is D1=179mm, D2=36mm, D3=30mm, and cell width is that W1 (adds metal
Slot)=60mm, i.e. 0.4 λ (under 2GHz), element length L1=60mm, i.e. 0.4 λ (under 2GHz).The azimuth dimension of array is 1
Unit, 4 units are tieed up in pitching, therefore the lateral dimension * longitudinal size of array is 260mm*60mm.In conjunction with Fig. 6, the utility model
A kind of array of the high-gain Vivaldi antenna element with miniature size, working band of the VSWR lower than 2.2:1 are
2.2GHz~19GHz, octave 8.6:1, maximum gain can achieve 13dBi.The array element spacing ratio root that Unequal distance is structured the formation
It is adjusted according to the characteristic of general direction figure, the ratio between general maximum array element spacing and minimum array element spacing is no more than antenna
Octave, the array element spacing of 6:1.2:1 is used in this secondary design.
Claims (4)
1. a kind of aerial array of the high-gain Vivaldi antenna element with miniature size, described to have miniature size
High-gain Vivaldi antenna element include upper layer PCB dielectric-slab (1) and lower layer's PCB dielectric-slab (2), upper layer PCB dielectric-slab
(1) it is fixed with lower layer's PCB dielectric-slab (2) by tooling, two layers of dielectric-slab inner surface is provided with strip line (5), the upper layer PCB
The exponential type line of rabbet joint gap bottom of the outer surface print index type groove gap metal layer (3) of dielectric-slab (1), the metal layer (3) is
Resonant cavity (4), lower layer PCB dielectric-slab (2) outer surface are printed on metal layer (3) identical with upper layer PCB dielectric-slab (1) outer surface,
It is characterized by: metal layer (3) two sides on the PCB dielectric-slab offer arc-shaped groove (6)；
The high-gain Vivaldi antenna element Unequal distance with miniature size arranges to form aerial array, maximum array element
Ratio between spacing and minimum array element spacing is no more than the octave of antenna；The aerial array azimuth dimension is 1 unit, is bowed
4 units of dimension are faced upward, antenna element spacing is respectively 179mm, 36mm and 30mm.
2. the aerial array of the high-gain Vivaldi antenna element according to claim 1 with miniature size, special
Sign is: the arc-shaped groove (6) is specially half elliptic.
3. the aerial array of the high-gain Vivaldi antenna element according to claim 1 with miniature size, special
Sign is: the transmission line both sides of strip line (5) to microstrip line transition position being provided with the metallization VIA (7) through pcb board, gold
Circular metal patch (8) are installed in categoryization via hole (7).
4. the aerial array of the high-gain Vivaldi antenna element according to claim 3 with miniature size, special
Sign is: the metallization VIA (7) and circular metal patch (8) have even-even and are symmetrically distributed in transmission line both sides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721600714.1U CN208862166U (en) | 2017-11-27 | 2017-11-27 | The aerial array of high-gain Vivaldi antenna element with miniature size |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721600714.1U CN208862166U (en) | 2017-11-27 | 2017-11-27 | The aerial array of high-gain Vivaldi antenna element with miniature size |
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| CN208862166U true CN208862166U (en) | 2019-05-14 |
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| CN201721600714.1U Expired - Fee Related CN208862166U (en) | 2017-11-27 | 2017-11-27 | The aerial array of high-gain Vivaldi antenna element with miniature size |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111697326A (en) * | 2020-07-14 | 2020-09-22 | 湖南大学 | Ultra-wideband Vivaldi antenna |
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2017
- 2017-11-27 CN CN201721600714.1U patent/CN208862166U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111697326A (en) * | 2020-07-14 | 2020-09-22 | 湖南大学 | Ultra-wideband Vivaldi antenna |
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Effective date of registration: 20220113 Address after: 430000 room 02, 4 / F, building A3, Wuhan International Enterprise Center, No. 1, Guanshan Second Road, Donghu New Technology Development Zone, Wuhan, Hubei Province Patentee after: WUHAN HUAXUN GUORONG TECHNOLOGY CO.,LTD. Address before: Room 1002, No. 301, Hanzhongmen street, Gulou District, Nanjing, Jiangsu 210029 Patentee before: CHINA COMMUNICATION TECHNOLOGY (NANJING) Co.,Ltd. |
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Effective date of registration: 20220623 Address after: 518000 404, building 37, chentian Industrial Zone, chentian community, Xixiang street, Bao'an District, Shenzhen City, Guangdong Province Patentee after: Shenzhen Huaxun ark Photoelectric Technology Co.,Ltd. Address before: 430000 room 02, 4 / F, building A3, Wuhan International Enterprise Center, No. 1, Guanshan Second Road, Donghu New Technology Development Zone, Wuhan, Hubei Province Patentee before: WUHAN HUAXUN GUORONG TECHNOLOGY CO.,LTD. |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190514 |