CN107634331A - A kind of ultra wide band Vivaldi antennas - Google Patents
A kind of ultra wide band Vivaldi antennas Download PDFInfo
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- CN107634331A CN107634331A CN201710814478.1A CN201710814478A CN107634331A CN 107634331 A CN107634331 A CN 107634331A CN 201710814478 A CN201710814478 A CN 201710814478A CN 107634331 A CN107634331 A CN 107634331A
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Abstract
The invention discloses a kind of ultra wide band Vivaldi antennas, the upper strata PCB dielectric-slabs and lower floor's PCB dielectric-slabs and the U-shaped metallic channel positioned at upper strata PCB dielectric-slabs and lower floor's PCB dielectric-slabs both sides placed including parallel face, upper strata PCB dielectric-slabs and lower floor's PCB dielectric-slabs are fixed by the U-shaped metallic channel of both sides, the outer surface of upper strata PCB dielectric-slabs is printed with exponential type line of rabbet joint gap metal level, the flank of exponential type line of rabbet joint gap metal level two is symmetrical arranged semi-oval slot, exponential type line of rabbet joint gap metal level is provided with rectangular channel, rectangular channel is close to exponential type line of rabbet joint gap metal level inner side edge along symmetrical, lower floor's PCB dielectric-slabs outer surface is printed with identical exponential type line of rabbet joint gap metal level with upper strata PCB dielectric-slabs outer surface correspondence position.The ultra wide band Vivaldi antennas of the present invention are fed using strip line, and strip line is transited into microstrip line in antenna edge is conveniently connected with radio-frequency joint, and with the addition of even-even metallic vias and be distributed along strip line both sides, improves transmission line performance.
Description
Technical field
The present invention relates to field of antenna, particularly a kind of ultra wide band Vivaldi antennas.
Background technology
Modernize radar and communication system is more and more urgent to the demand of multifunctional equipment, the ultra-wideband antenna of miniaturization exists
Antenna Design field has obtained higher and higher attention.Vivaldi antennas are one kind of ultra-wideband antenna, whether there is limit for width in theory
Bandwidth, and there is good end-fire characteristic.But the requirement of Vivaldi antenna elements size reaches low frequency end cut-off frequency
Half-wavelength, and the miniature antenna design carried out in the past using loading technique needs to pay the cost of gain, therefore actually should
There is an urgent need for a kind of high-gain aerial unit with miniature size with middle.
Document 1 (P.J.Gibson, " The Vivaldi aerial, " in Proc.9th Eur.Microw.Conf.,
Brighton, U.K., pp.101-105, Jun.1979.) Vivaldi antennas are proposed, illustrate the broadband of Vivaldi antennas
Characteristic, and demonstrate Vivaldi antennas there is good end-fire radiation characteristic, and theoretically explain Vivaldi antennas
With the bandwidth without limit for width, there is greatly application prospect.
Document 2 (M.Wajih Elsallal and D.H.Schaubert, " Parameter Study of Single
Isolated Element and Infinite Arrays of Balanced Antipodal Vivaldi Antennas,”
Proc Antenna Applications Symposium, pp.45-69, Sep.) propose to disappear by loading U-shaped metallic channel
Except the inductive effect of the working band under limitation lower frequency, day can effectively be reduced by the cut-off frequency for reducing low-frequency range
The overall dimensions of cable architecture, the reduction of gain is avoided as far as possible.
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 designs, but loading resistor adds loss, causes the ratio of gains of antenna relatively low.
From the foregoing, it will be observed that Vivaldi antennas are easier to realize good radiation characteristic in ultra wide band range, but it is existing
Technology realizes that miniaturization Vivaldi antennas have the shortcomings such as loss is high, gain is low.
The content of the invention
It is an object of the invention to provide a kind of ultra wide band Vivaldi antennas.
The technical solution for realizing the object of the invention is：A kind of ultra wide band Vivaldi antennas, including parallel face are placed
Upper strata PCB dielectric-slabs and lower floor's PCB dielectric-slabs and the U-shaped gold positioned at upper strata PCB dielectric-slabs and lower floor's PCB dielectric-slabs both sides
Belong to groove, upper strata PCB dielectric-slabs and lower floor's PCB dielectric-slabs are fixed by the U-shaped metallic channel of both sides, the appearance of upper strata PCB dielectric-slabs
Face is printed with exponential type line of rabbet joint gap metal level, and the flank of exponential type line of rabbet joint gap metal level two is symmetrical arranged semi-oval slot, index
Type groove gap metal level inner side edge edge is arranged with rectangular channel；Lower floor's PCB dielectric-slabs outer surface and upper strata PCB dielectric-slabs outer surface
Correspondence position is printed with identical exponential type line of rabbet joint gap metal level；The inner surface of upper strata PCB dielectric-slabs is printed with transmission line.
Further, microstrip line connection of the transmission line by strip line and positioned at upper strata PCB dielectric-slabs edge forms,
The strip line is printed with the symmetrical circular metal patch of even-even, the circular metal patch with microstrip line junction both sides
Piece is provided with the metallic vias through upper strata PCB dielectric-slabs and lower floor's PCB dielectric-slabs.
Compared with prior art, its remarkable advantage is the present invention：(1) Vivaldi antennas proposed by the present invention have 8.6
Times bandwidth, voltage standing wave ratio (VSWR) in 2.2GHz~19Ghz, maximum gain reach 13dBi, and the radiation characteristic of antenna
It is stable.(2) feed structure of Miniaturization high-gain Vivaldi antennas proposed by the present invention is transitioned into microstrip line by strip line, side
Just engineering application.(3) Miniaturization high-gain Vivaldi antennas integrated level proposed by the present invention is high, and cost is low, is easy to extensive
Processing.
The present invention is described in further detail below in conjunction with the accompanying drawings.
Brief description of the drawings
Fig. 1 is a kind of ultra wide band Vivaldi antenna structure stereograms of the present invention.
Fig. 2 is a kind of ultra wide band Vivaldi antenna structure front views of the present invention.
Fig. 3 is a kind of ultra wide band Vivaldi antenna structure bottom views of the present invention.
Fig. 4 is a kind of antenna layered structure charts of ultra wide band Vivaldi of the present invention.
Fig. 5 is the present invention a kind of reflectance factor and gain curve of ultra wide band Vivaldi antennas.
Fig. 6 is a kind of antenna pattern of the ultra wide band Vivaldi antennas of the present invention when centre frequency is 11GHz.
Embodiment
With reference to Fig. 1, a kind of ultra wide band Vivaldi antennas of the invention, including the upper strata PCB dielectric-slabs that parallel face is placed
1 and lower floor's PCB dielectric-slabs 2 and the U-shaped metallic channel 3 positioned at upper strata PCB dielectric-slabs 1 and the both sides of lower floor's PCB dielectric-slabs 2, it is described
Upper strata PCB dielectric-slabs 1 and lower floor's PCB dielectric-slabs 2 are fixed by the U-shaped metallic channel 3 of both sides, outside the upper strata PCB dielectric-slabs 1
Surface printing has exponential type line of rabbet joint gap metal level, and the flank of exponential type line of rabbet joint gap metal level two is symmetrical arranged half elliptic and opened
Groove, the exponential type line of rabbet joint gap metal level inner side edge edge are arranged with rectangular channel；The outer surface of lower floor PCB dielectric-slabs 2 with it is upper
The outer surface correspondence position of layer PCB dielectric-slabs 1 is printed with identical exponential type line of rabbet joint gap metal level；The upper strata PCB dielectric-slabs 1
Inner surface is printed with transmission line.
In further embodiment, transmission line is by strip line 6-1 and the microstrip line positioned at the edge of upper strata PCB dielectric-slabs 1
6-2 connections form, and the strip line is printed with the symmetrical circular metal patch 4 of even-even with microstrip line junction both sides,
The circular metal patch 4 is provided with the metallic vias 5 through upper strata PCB dielectric-slabs 1 and lower floor's PCB dielectric-slabs 2.
In further embodiment, a diameter of 0.7mm of circular metal patch 4, the metallic vias 5 it is a diameter of
0.3mm。
In further embodiment, the length of U-shaped metallic channel 3 is 3.58mm, width 4mm, is highly 35mm, depth is
2mm。
In further embodiment, upper strata PCB dielectric-slabs 1 and lower floor's PCB dielectric-slabs 2 are that Arlon DiClad880 are situated between
Lumber, length 48mm, width 60mm, thickness H are 0.79mm, permittivity εγ=2.2, loss tangent angle tan σ=
0.0009。
In further embodiment, metal level inner side edge edge in type groove gap is exponential type gradient ramp, and exponential type gradual change is bent
The resonator that line bottom is formed with circular curve is connected.
In further embodiment, gap is left between exponential type line of rabbet joint gap metal level flank and U-shaped metallic channel 3.
In further embodiment, length of the exponential type line of rabbet joint gap metal level inner side edge along rectangular channel is 1mm, and width is
4.3mm。
In further embodiment, number of the exponential type line of rabbet joint gap metal level inner side edge along rectangular channel is two
A kind of ultra wide band Vivaldi antennas of the present invention turn feed microstrip line mode using strip line, on lower floor's pcb board side
Edge is in one rectangular channel of processing on pcb board, is changed by line style, is feed microstrip line by strip line feed transition, along feeder line
The symmetrical metallic vias at edge plays cut-off to electromagnetic wave so that electromagnetic wave is propagated along feeder line.
Refinement explanation is carried out to the details and working condition of the specific device of the present invention with reference to embodiment.
Embodiment 1
In the present embodiment, the overall structure size of ultra wide band Vivaldi antennas is 3.58mm*52mm*60mm.
With reference to Fig. 1~4, a kind of ultra wide band Vivaldi antennas of the invention include the upper strata PCB media that parallel face is placed
Plate and lower floor's PCB dielectric-slabs and the U-shaped metallic channel positioned at upper strata PCB dielectric-slabs and lower floor's PCB dielectric-slabs both sides, upper strata PCB
Dielectric-slab and lower floor's PCB dielectric-slabs are fixed by the U-shaped metallic channel of both sides, and the outer surface of upper strata PCB dielectric-slabs is printed with index
Type groove gap metal level, the flank of exponential type line of rabbet joint gap metal level two are symmetrical arranged semi-oval slot, exponential type line of rabbet joint gap metal
Layer inner side edge edge is arranged with two rectangular channels, lower floor's PCB dielectric-slabs outer surface and upper strata PCB dielectric-slabs outer surface correspondence position
It is printed with identical exponential type line of rabbet joint gap metal level；The inner surface of upper strata PCB dielectric-slabs is printed with transmission line.Transmission line is by banding
Line and the microstrip line connection composition positioned at upper strata PCB dielectric-slabs edge, strip line are printed with idol with microstrip line junction both sides
It is several to symmetrical circular metal patch, circular metal patch, which is provided with, runs through upper strata PCB dielectric-slabs and lower floor's PCB dielectric-slabs
Metallic vias.
In the present embodiment, a diameter of 0.7mm of circular metal patch 4, a diameter of 0.3mm of the metallic vias 5；It is U-shaped
The length of metallic channel 3 is 3.58mm, width 4mm, is highly 35mm, depth 2mm；Upper strata PCB dielectric-slabs 1 and lower floor PCB
Dielectric-slab 2 is Arlon DiClad880 medium sheet materials, and length 48mm, width 60mm, thickness H is 0.79mm, and dielectric is normal
Number εγ=2.2, loss tangent angle tan σ=0.0009.Length of the exponential type line of rabbet joint gap metal level inner side edge along rectangular channel is 1mm,
Width is 4.3mm.
A kind of ultra wide band Vivaldi antennas of the present invention are connected by microstrip line with radio-frequency joint, input radio frequency signal, are led to
The exponential type line of rabbet joint crossed strip transmission and printed on radiated electromagnetic energy to upper strata PCB dielectric-slabs 1 and lower floor's PCB dielectric-slabs 2
On gap metal level, and by exponential type line of rabbet joint gap metal level emittance into space.
With reference to Fig. 5, a kind of ultra wide band Vivaldi antennas of the invention, voltage standing wave ratio VSWR is less than 2:Work frequency when 1
Band is 2.2GHz~19GHz, octave 8.6:1, maximum gain can reach 13dBi, and gain fluctuation is less than 3dB.
With reference to Fig. 6, a kind of ultra wide band Vivaldi Antenna Operations of the invention are in 11GHz, its E-plane and H-plane pattern tool
There is good symmetry.
Claims (9)
- A kind of 1. ultra wide band Vivaldi antennas, it is characterised in that including parallel face place upper strata PCB dielectric-slabs [1] and under Layer PCB dielectric-slabs [2] and the U-shaped metallic channel [3] positioned at upper strata PCB dielectric-slabs [1] and lower floor PCB dielectric-slabs [2] both sides, institute It is fixed by the U-shaped metallic channel [3] of both sides to state upper strata PCB dielectric-slabs [1] and lower floor's PCB dielectric-slabs [2], the upper strata PCB is situated between The outer surface of scutum [1] is printed with exponential type line of rabbet joint gap metal level, and the flank of exponential type line of rabbet joint gap metal level two is symmetrical arranged Semi-oval slot, the exponential type line of rabbet joint gap metal level inner side edge edge are arranged with rectangular channel；The lower floor PCB dielectric-slabs [2] outer surface is printed with identical exponential type line of rabbet joint gap metal level with upper strata PCB dielectric-slabs [1] outer surface correspondence position；It is described The inner surface of upper strata PCB dielectric-slabs [1] is printed with transmission line.
- 2. ultra wide band Vivaldi antennas according to claim 1, it is characterised in that the transmission line is by strip line [6-1] And the microstrip line [6-2] positioned at upper strata PCB dielectric-slabs [1] edge connects composition, the strip line and microstrip line junction two While being printed with the symmetrical circular metal patch of even-even [4], the circular metal patch [4], which is provided with, runs through upper strata PCB The metallic vias [5] of dielectric-slab [1] and lower floor's PCB dielectric-slabs [2].
- 3. ultra wide band Vivaldi antennas according to claim 2, it is characterised in that the circular metal patch [4] it is straight Footpath is 0.7mm, a diameter of 0.3mm of the metallic vias [5].
- 4. ultra wide band Vivaldi antennas according to claim 1, it is characterised in that the length of the U-shaped metallic channel [3] It is highly 35mm for 3.58mm, width 4mm, depth 2mm.
- 5. ultra wide band Vivaldi antennas according to claim 1, it is characterised in that the upper strata PCB dielectric-slabs [1] and Lower floor's PCB dielectric-slabs [2] are Arlon DiClad880 medium sheet materials, length 48mm, width 60mm, and thickness H is 0.79mm, permittivity εγ=2.2, loss tangent angle tan σ=0.0009.
- 6. ultra wide band Vivaldi antennas according to claim 1, it is characterised in that the exponential type line of rabbet joint gap metal level Along being exponential type gradient ramp, the resonator that exponential type gradient ramp bottom is formed with circular curve is connected inner side edge.
- 7. ultra wide band Vivaldi antennas according to claim 1, it is characterised in that the exponential type line of rabbet joint gap metal level Gap is left between flank and U-shaped metallic channel [3].
- 8. the ultra wide band Vivaldi antennas according to described by claim 1, it is characterised in that the exponential type line of rabbet joint gap metal Length of the layer inner side edge along rectangular channel is 1mm, width 4.3mm.
- 9. the ultra wide band Vivaldi antennas according to described by claim 1, it is characterised in that the exponential type line of rabbet joint gap metal Number of the layer inner side edge along rectangular channel is two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710814478.1A CN107634331A (en) | 2017-09-10 | 2017-09-10 | A kind of ultra wide band Vivaldi antennas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710814478.1A CN107634331A (en) | 2017-09-10 | 2017-09-10 | A kind of ultra wide band Vivaldi antennas |
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| Publication Number | Publication Date |
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| CN107634331A true CN107634331A (en) | 2018-01-26 |
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ID=61101162
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710814478.1A Withdrawn CN107634331A (en) | 2017-09-10 | 2017-09-10 | A kind of ultra wide band Vivaldi antennas |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107834188A (en) * | 2017-11-27 | 2018-03-23 | 南京华讯方舟通信设备有限公司 | The high-gain Vivaldi antenna elements and aerial array of miniature size |
| CN109616756A (en) * | 2018-11-23 | 2019-04-12 | 西安交通大学 | A kind of ultra wide band array antenna |
| CN113410639A (en) * | 2021-05-25 | 2021-09-17 | 西安理工大学 | Vivaldi antenna |
| CN113889765B (en) * | 2021-10-19 | 2024-04-19 | 中国人民解放军63660部队 | Method for expanding working band lower limit of coplanar Vivaldi antenna |
-
2017
- 2017-09-10 CN CN201710814478.1A patent/CN107634331A/en not_active Withdrawn
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107834188A (en) * | 2017-11-27 | 2018-03-23 | 南京华讯方舟通信设备有限公司 | The high-gain Vivaldi antenna elements and aerial array of miniature size |
| CN107834188B (en) * | 2017-11-27 | 2023-09-19 | 武汉华讯国蓉科技有限公司 | High-gain Vivaldi antenna unit with miniaturized size and antenna array |
| CN109616756A (en) * | 2018-11-23 | 2019-04-12 | 西安交通大学 | A kind of ultra wide band array antenna |
| CN113410639A (en) * | 2021-05-25 | 2021-09-17 | 西安理工大学 | Vivaldi antenna |
| CN113889765B (en) * | 2021-10-19 | 2024-04-19 | 中国人民解放军63660部队 | Method for expanding working band lower limit of coplanar Vivaldi antenna |
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Application publication date: 20180126 |
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| WW01 | Invention patent application withdrawn after publication |