CN105576380A - Broadband, high-gain and double-slot Vivaldi antenna - Google Patents

Broadband, high-gain and double-slot Vivaldi antenna Download PDF

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Publication number
CN105576380A
CN105576380A CN201510979603.5A CN201510979603A CN105576380A CN 105576380 A CN105576380 A CN 105576380A CN 201510979603 A CN201510979603 A CN 201510979603A CN 105576380 A CN105576380 A CN 105576380A
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dielectric
antenna
slab
line
fluting
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王亚伟
王光明
梁建刚
高向军
朱莉
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Air Force Engineering University of PLA
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Air Force Engineering University of PLA
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
    • H01Q13/10—Resonant slot antennas
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
    • H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
    • H01Q13/10—Resonant slot antennas
    • H01Q13/106—Microstrip slot antennas

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Abstract

The invention discloses a broadband, high-gain and double-slot Vivaldi antenna, which comprises a dielectric plate, a double-slot tapered slot line, edge waves and a feed element, wherein one surface of the dielectric plate is provided with a metal layer as the upper surface; the double-slot tapered slot line is arranged at the upper surface of the dielectric plate and is in an exponential gradient trumpet-shaped opening; the edge waves are arranged on the upper surface of the dielectric plate; and the feed element is arranged on the lower surface of the dielectric plate and is used for feeding the tapered slot line. By the technical scheme disclosed by the invention, the radiation gain of the Vivaldi antenna within a complete working band can be improved.

Description

A kind of wide band high-gain two fluting Vivaldi antenna
Technical field
The invention belongs to antenna technical field, particularly relate to a kind of wide band high-gain two fluting Vivaldi antenna.
Background technology
Gradual change slot antenna (Taperedslotantenna, TSA) is a kind of typical surface wave end-on-fire antenna.It relies on the tapered slot be etched on dielectric-slab to realize Slow-wave effect, and the line of rabbet joint emittance by opening gradually in the electromagnetic process of transmission.Gradual change slot antenna have in very wide frequency band good port match, stable gain, similar width and H face, the E face directional diagram of symmetry, lightweight, be easy to processing and the advantage such as integrated, be thus widely used in the fields such as radio astronomy, ground penetrating radar, ultra-wideband communications, ultra-wideband imaging.The slot line structure of gradual change slot antenna, mainly contains three kinds of typical forms: exponential fade slot antenna (Exponentiallytaperedslotantenna, ETSA), is also Vivaldi antenna; Linear gradient slot antenna (Linearlytaperedslotantenna, LTSA); The constant slot antenna (Constantwidthslotantenna, CWSA) of width.In these three kinds traditional gradual change slot antennas, ETSA bandwidth is the widest, and LTSA takes second place, and CWSA is the narrowest; CWSA has highest-gain, and most narrow beam, LTSA takes second place, and ETSA gain is minimum, and wave beam is the widest.Visible, ETSA, namely Vivaldi antenna more meets the requirement of modern antennas to wide bandwidth, but the radiation gain how improving Vivaldi antenna within the scope of full working band just becomes the major issue that antenna works teachers face.
Vivaldi antenna is the frequency-independent antenna in gradual change slot antenna, has the widest frequency band, the most stable radiation characteristic, but also has relatively low radiation gain.In addition, when utilizing printed board technique to realize, the impact of dielectric board material can cause the beam splitting of antenna high frequency treatment.
The technical foundation improving the gain of Vivaldi aerial radiation is the Aperture field distribution improving its line of rabbet joint.R.N.Simons and R.Q.Lee discussed as far back as 1998 and utilizes difformity medium block to the improvement situation of antenna aperture field in gradual change slot antenna front end, and have studied the change in gain of respective antenna, this medium block is called as medium " director ", and its functional equivalent is in simple di-lens.On this idea basis, a lot of researcher requires for different application the medium " director " that have devised various shape and change in dielectric constant.Another kind method occurs along with the research of Meta Materials, and researcher by placing zero refractive index metamaterial structure in the line of rabbet joint bore of gradual change slot antenna, and then improves the Aperture field distribution of antenna, improves the gain of antenna.This is at present in order to improve two kinds of main method of Vivaldi aerial radiation gain, will elaborate in prior art below.
Document " N.Ghassemi; andK.Wu.PlanarHigh-GainDielentric-LoadAntipodalLinearlyT aperedSlotAntennaforE-andW-bandGigabytePoint-to-PointWir elessServices [J] .IEEETrans.Antennas & Propagat.; 2013; 61 (4): 1747-1745 "; " G.Teni; N.Zhang, J.H.Qiu, etal.ResearchonaNovelMiniaturizedAntipodalVivaldiAntenna withImprovedRaidation [J] .IEEEAntennasWirelessPropag.Lett.; 2013,12:417-420 "; " R.N.Simons, andR.Q.Lee.ImpedanceMatchingofTaperedSlotAntennaUsingaDi electricTransformer [J] .ElectronLett., 1998,34 (24): 2287-2289 "; " K.Kota; andL.Shafai.GainandRadiationPatternEnhancementofBalanced AntipodalVivaldiAntenna [J] .ElectronLett.; 2011,47 (5): 303-304: the method for employing is the radiation gain utilizing medium " director " to improve Vivaldi antenna.This medium " director " can to improve as lens in line of rabbet joint bore or outside line of rabbet joint bore near electric field wave before, the wavefront made it close to plane wave distributes, thus realizes the high-gain of far-field radiation.Being improved the fundamental way of radiation gain by the mode changing Aperture field distribution, is also the effective ways improving Vivaldi antenna gain.The use of medium " director " needs outstanding medium front end, or inside and outside bore, directly load the medium block of high-k, although this design can improve the gain of antenna in wider frequency band range, add the volume of antenna, design also more complicated.
Document " B.Zhou; andT.J.Cui.DirectivityEnhancementtoVivaldiAntennasUsingC ompactlyAnisotropicZero-IndexMetamaterials [J] .IEEEAntennasWirelessPropag.Lett.; 2011,10:326-329 "; " M.Sun; Z.N.Chen; andX.M.Qing.GainEnhancementof60-GHzAntipodalTaperedSlotA ntennaUsingZero-IndexMetamaterial [J] .IEEETrans.Antennas & Propagat.; 2013,61 (4): 1741-1746 " improves the radiation gain of antenna by designing zero refractive index metamaterial structure in the line of rabbet joint of Vivaldi antenna.Zero refractive index Meta Materials is positioned in line of rabbet joint bore or loads on line of rabbet joint bore both sides by researcher, zero refracting characteristic of zero refractive index Meta Materials is utilized to reduce the phase velocity of line of rabbet joint center electric field, make it, when arriving line of rabbet joint end, there is the phase place close with line of rabbet joint both sides electric field, distribute before defining the homogeneous wave of similar plane wave, far-field radiation gain is improved.The design complexity of zero refractive index Meta Materials is far more than medium " director ", the more important thing is, zero refractive index Meta Materials can only realize zero refraction work in narrower frequency band range, and thus, the gain utilizing zero refractive index Meta Materials to improve Vivaldi antenna is difficult to meet bandwidth requirement.
Document S.Sugawara, Y.Maita, andK.Adachi, etal.Amm-WaveTaperedSlotAntennawithImprovedRadiationPatt ern [C] .IEEEMTT-SInternationalSymposiumDigest, 1997:959-962 have studied at the gradual change slot antenna edge etch series of rectangular line of rabbet joint the impact of antenna performance, this process defines edges corrugated structure, edges corrugated by cranky for the edge current being originally parallel to antenna axial direction, produce the electric current vertical with antenna axial direction, and electric field in the direction of current emissions electric field and the line of rabbet joint in the same way, Net long wave radiation is formed in antenna axial direction, and then improve the radiance of gradual change slot antenna, the lower operating frequency that particularly edge current is stronger.Experiment proves, more abundant to the ripple process at gradual change slot antenna edge, the low frequency of gradual change slot antenna mate and radiance better.
The radiation gain utilizing medium " director " to improve Vivaldi antenna needs to use outstanding medium front end, or inside and outside bore, directly place the medium block of high-k, although this design can improve the gain of antenna in wider frequency band range, but the volume of antenna is added, design also more complicated, cost is also very high.Zero refractive index Meta Materials is utilized to improve the design complexity of Vivaldi antenna aperture field higher, it needs to obtain zero refractive index structures to Vivaldi antenna line of rabbet joint diverse location place and carries out a large amount of optimization calculating, could realize the good improvement to Aperture field distribution in the line of rabbet joint.The more important thing is, zero refractive index Meta Materials is all arrowband structure, can only improve the gain of Vivaldi antenna, can not meet the wideband requirements of Vivaldi antenna in very narrow frequency band range.In addition, utilize traditional rectangle line of rabbet joint to carry out ripple process to Vivaldi antenna edge, need to utilize the rectangle line of rabbet joint of different length to the process of Vivaldi antenna edge fully, the Modeling and Design of gradual change slot antenna could be unfavorable for.
Summary of the invention
The technical problem to be solved in the present invention is, provides a kind of wide band high-gain Vivaldi antenna new construction---two notching construction, can improve the radiation gain in the whole working band of Vivaldi antenna.
For solving the problem, the present invention adopts following technical scheme:
A kind of wide band high-gain two fluting Vivaldi antenna comprises: dielectric-slab, and one side has metal level as upper surface; Two fluting tapered slot, is arranged on the upper surface of dielectric-slab, the flare openings of exponentially shape gradual change; Edge waviness, is arranged on dielectric-slab upper surface; Feed element, is arranged on dielectric-slab lower surface, carries out feed to tapered slot; Wherein,
Described two fluting tapered slot comprises symmetrically arranged four radical exponent transition lines up and down, and the reference frame of exposure is as follows: x-axis is parallel with the long limit of dielectric-slab, and forward is tapered slot opening direction; Y-axis is parallel with the narrow limit of dielectric-slab, and y-axis forward can be any direction in straight line two direction, place, dielectric-slab narrow limit; Coordinate origin is positioned at the symmetrical centre on narrow limit and 5/24 place of long edge lengths, and the longer of long limit is tapered slot place, and the parametric equation of described four radical exponent transition lines is:
y = 1 2 * ( g * exp ( l n ( W s g ) * x L s ) - W ) , ( 0 ≤ x ≤ L s ) - - - ( 1 )
y = 1 2 * ( W - g * exp ( l n ( W s g ) * x L s ) ) , ( 0 ≤ x ≤ L s ) - - - ( 2 )
y = 1 2 * ( - W - g * exp ( l n ( W g ) * x L ) ) , ( 0 ≤ x ≤ L ) - - - ( 3 )
y = 1 2 * ( W + g * exp ( l n ( W g ) * x L ) ) , ( 0 ≤ x ≤ L ) - - - ( 4 )
Wherein, g is the start width of two fluting tapered slot, and W is the overall width of antenna, and L is the line of rabbet joint length of antenna, L sfor the length of radiation arm in the middle of antenna, W sfor the distance between two fluting tapered slot two starting points;
Describedly edges corrugatedly be respectively w by width and spacing ceand s cethe index shape line of rabbet joint form, the edge line of the index shape line of rabbet joint be utilize formula (3), (4) draw, wherein, the span of x is [L-t ce, L].
As preferably, described feed element comprises: microstrip transmission line, two metallization via hole, two circular recesss; Wherein, described microstrip transmission line comprises: a T-shaped power splitter and two sections of L shaped microstrip connecting lines, and microstrip transmission line is positioned at dielectric-slab lower surface, and for transmission current, microstrip transmission line is identical with the metal layer material of dielectric-slab upper surface; Metallization via hole runs through dielectric-slab, for connecting microstrip transmission line and metal level, conducts on metal level by the electric current on microstrip transmission line; Two circular recesss are connected with two fluting tapered slot, for the approximate open circuit line of rabbet joint.
As preferably, described dielectric-slab is thickness is 1mm, and dielectric constant is 2.65, and loss angle tangent is the polytetrafluoroethylglass glass cloth plate of 0.001; Metal level is the copper foil be pasted onto on dielectric-slab, and metal level length is 145mm, and width is 80mm, and thickness is 0.018mm.
Beneficial effect of the present invention is as follows:
Vivaldi antenna of the present invention adopts a kind of two fluting tapered slot structures newly, compared with traditional Vivaldi antenna structure, this structure substantially remains unchanged in size and working band, and within the scope of whole working band, the radiation gain of antenna can be improved significantly, reduce the impact of high frequency treatment dielectric board material on antenna radiation performance simultaneously, significantly improve the beam splitting phenomenon of traditional Vivaldi antenna; Have employed a kind of newly edges corrugated, the line of rabbet joint forming this edges corrugated line of rabbet joint and gradual change slot antenna has identical variation pattern, the this edges corrugated of Vivaldi antenna is made up of the line of rabbet joint of index variation, thisly edges corrugatedly can carry out sufficient ripple process to the edge of gradual change slot antenna, the low frequency performance of antenna can be improved better.
1, improve compared with Vivaldi antenna gain with utilizing medium " director ", structure of the present invention is simple, and cost is lower, better effects if.
2, improve compared with Vivaldi antenna gain with utilizing zero refractive index Meta Materials, structure of the present invention is simple, and amount of calculation is little, improves the frequency band wider (can significantly improve antenna gain within the scope of Whole frequency band) of gain.
3, compared with edges corrugated with the traditional rectangular line of rabbet joint, the index shape line of rabbet joint that the present invention proposes is edges corrugated, and model is set up convenient, and can improve antenna performance better.
Accompanying drawing explanation
Fig. 1 a is the structural representation of two fluting Vivaldi antenna;
Fig. 1 b is the structural representation of the feed element of two fluting Vivaldi antenna;
Fig. 2 is the schematic diagram of antenna port reflects coefficient;
Fig. 3 is that traditional Vivaldi antenna is at 10GHz place line of rabbet joint bore Electric Field Distribution and the two schematic diagram of Vivaldi antenna in 10GHz place line of rabbet joint bore Electric Field Distribution of slotting;
Fig. 4 a is that traditional Vivaldi antenna and two fluting Vivaldi antenna are at 10GH place E surface radiation directional diagram schematic diagram;
Fig. 4 b is traditional Vivaldi antenna and the two schematic diagram of Vivaldi antenna at 10GH place E surface radiation directional diagram of slotting;
Fig. 5 a is the schematic diagram that the main radiation direction gain of traditional Vivaldi antenna and two fluting Vivaldi antenna is compared;
Fig. 5 b is the schematic diagram of the front and back ratio of traditional Vivaldi antenna and two fluting Vivaldi antenna, wherein, before and after than the electric field strength ratio referring to the radiation of antenna forward and backward, being embodied in the gain that represents with dB is the difference of forward radiation gain and backward radiation gain;
Fig. 5 c is the schematic diagram that the minor level of traditional Vivaldi antenna and two fluting Vivaldi aerial radiation compares;
Fig. 5 d is the schematic diagram that the half-power beam width of traditional Vivaldi antenna and two fluting Vivaldi aerial radiation compares.
Embodiment
As shown in Figure 1, the embodiment of the present invention provides a kind of wide band high-gain two fluting Vivaldi antenna to comprise: dielectric-slab, and one side has metal level as upper surface; Two fluting tapered slot, is arranged on the upper surface of dielectric-slab, the flare openings of exponentially shape gradual change; Edge waviness, is arranged on dielectric-slab upper surface; Feed element, is arranged on dielectric-slab lower surface, carries out feed to tapered slot.
The upper surface of dielectric-slab has metal level, for conduction current; In the present embodiment, described dielectric-slab is thickness is 1mm, and dielectric constant is 2.65, and loss angle tangent is the polytetrafluoroethylglass glass cloth plate of 0.001; Metal level is the copper foil be pasted onto on dielectric-slab, and metal level length is 145mm, and width is 80mm, and thickness is 0.018mm.
Two fluting tapered slot is according to exponential fade, and flare opening, it comprises symmetrically arranged four radical exponent transition lines up and down.In the reference frame of exposure: x-axis is parallel with the long limit of dielectric-slab, forward is tapered slot opening direction; Y-axis is parallel with the narrow limit of dielectric-slab, and because antenna is relative to the symmetry of x-axis, y-axis forward can be any direction in straight line two direction, place, dielectric-slab narrow limit; Coordinate origin is positioned at the symmetrical centre on narrow limit and 5/24 place of long edge lengths, and the longer of long limit is tapered slot place.As shown in Figure 1, the parametric equation forming four radical exponent transition lines of tapered slot is:
y = 1 2 * ( g * exp ( l n ( W s g ) * x L s ) - W ) , ( 0 ≤ x ≤ L s ) - - - ( 1 )
y = 1 2 * ( W - g * exp ( l n ( W s g ) * x L s ) ) , ( 0 ≤ x ≤ L s ) - - - ( 2 )
y = 1 2 * ( - W - g * exp ( l n ( W g ) * x L ) ) , ( 0 ≤ x ≤ L ) - - - ( 3 )
y = 1 2 * ( W + g * exp ( l n ( W g ) * x L ) ) , ( 0 ≤ x ≤ L ) - - - ( 4 )
Wherein, g is the start width of two fluting tapered slot, and W is the overall width of antenna, and L is the line of rabbet joint length of antenna, L sfor the length of radiation arm in the middle of antenna, W sfor the distance between two fluting tapered slot two starting points.
Describedly edges corrugatedly be respectively w by width and spacing ceand s cethe index shape line of rabbet joint form, the edge line of the index shape line of rabbet joint utilizes formula (3), (4) draw, and the span of x is [L-t ce, L], t cerefer to the longitudinal length of the index shape line of rabbet joint along x-axis.
As shown in Figure 1, feed element comprises: microstrip transmission line, two metallization via hole, two circular recesss; Wherein, described microstrip transmission line comprises: a T-shaped power splitter and two sections of micro-band connecting lines; T-shaped power splitter input is width is w 50length is L f4microstrip line, two outputs are width is w 100length is L f3microstrip line; Microstrip line junction has the groove of falling isosceles triangle, and triangle base width is w c, height is l c; Two sections of micro-band connecting lines are identical L shaped microstrip line; Described microstrip transmission line is positioned at dielectric-slab lower surface, and for transmission current, microstrip transmission line is identical with the metal layer material of dielectric-slab upper surface; Metallization via hole runs through dielectric-slab, for connecting microstrip transmission line and metal level, conducts on metal level by the electric current on microstrip transmission line; Two circular recesss are connected with tapered slot, for the approximate open circuit line of rabbet joint.
The dimensional parameters of tapered slot and feed element is as shown in table 1
Table 1
Wherein, W sbe the distance between two line of rabbet joint, L bfor the length extended dorsad to antenna by line of rabbet joint starting point in antenna structure, R sfor the radius of the circular open-circuit structure of the line of rabbet joint, L f1and L f2for connecting the length of microstrip line, L f3for the length of T-shaped power splitter defeated scene 2 end microstrip line, L f4for the length of T-shaped power splitter input microstrip line, w 50and w 100the width of be characteristic impedance to be respectively 50 Ω and 100 Ω be band line, w cand l cbe respectively the base width in isosceles triangle gap on T-shaped power splitter and height.
The performance evaluation of two fluting Vivaldi antenna
For the superiority of two fluting Vivaldi antennas in radiance in outstanding the present invention, in the explanation of this part, two fluting Vivaldi antenna and measure-alike with it, that used medium plate is identical traditional Vivaldi antenna are analyzed.
Figure 2 shows that two fluting Vivaldi antenna and the port reflects coefficient with size tradition Vivaldi antenna in Fig. 1.Can find out that the impedance bandwidth of traditional Vivaldi antenna is 2.9-18GHz, low-limit frequency is greater than the frequency of aperture width corresponding to half-wavelength, and this does not have the metal edge of one fixed width relevant with this Vivaldi antenna.The impedance bandwidth of two fluting Vivaldi antenna is 3.25-18GHz, can find out, compared with traditional Vivaldi antenna, the lowest operating frequency of two fluting Vivaldi antenna only increases 0.35GHz, still maintains the wideband impedance match performance of traditional Vivaldi antenna.
Mention above, carry out two slot treatment to improve gain to traditional Vivaldi antenna, improve radiation characteristic, its main cause is to improve the Electric Field Distribution between line of rabbet joint bore.The Electric Field Distribution in traditional Vivaldi antenna and two fluting Vivaldi antenna line of rabbet joint bore is given for 10GHz, Fig. 3.Can find out: the distribution having similar spherical wave before the electric field wave in traditional Vivaldi antenna line of rabbet joint bore, and the front distribution of electric field wave in two fluting Vivaldi antenna line of rabbet joint bore is closer to plane wave, this is the basic reason that two fluting Vivaldi antenna can obtain better radiation characteristic.Fig. 4 sets forth the E face directional diagram of two kinds of antennas at 10GHz and 15GHz, can find out: in line of rabbet joint bore, the improvement of field distribution makes two fluting Vivaldi antenna have narrower wave beam, higher directivity.In addition, also can be found out by the E face directional diagram of 15GHz, the main lobe of tradition Vivaldi antenna pattern divides at its end-on direction, this is the impact that dielectric-slab produces, and two slot treatment of Vivaldi antenna are reduced to the constraint ability of antenna his-and-hers watches ground roll, prevent the generation of unnecessary surface wave mode, eliminate beam splitting, make the line of rabbet joint at L sto the scope of L, create the radiation of the constant slot antenna of similar width (CWSA), obtain narrow beam and high-gain.
Improve compared to the gain utilizing zero refractive index Meta Materials to realize in narrow-band, the superior function of two fluting Vivaldi antenna is that it can realize the lifting of overall performance within the scope of whole working band.Fig. 5 compares the radiation characteristic of two all antennas, mainly contains: main radiation direction gain, comprises the minor level in main polarization gain and cross polarization gain, front and back ratio, E face and H face, the E face of main beam and H face half-power beam width.Because traditional Vivaldi antenna to create the E face main beam of division in the frequency being greater than 11GHz, thus minor level and the half-power beam width of these frequency place antennas can not be described exactly.And two fluting Vivaldi antenna eliminates the main beam separating phenomenon of high frequency treatment and significantly improve the gain of antenna in whole working frequency range, reduce the E face half-power beam width of antenna, the high-gain of main radiation direction is also that front and back are than being improved the main cause be minimized with minor level.
According to above analysis result, two fluting design is carried out to traditional Vivaldi antenna, be aided with the index shape line of rabbet joint more edges corrugated, the comprehensive lifting of antenna performance can be obtained, front and back are than increasing, and minor level reduces, and E ground roll bundle narrows, the more important thing is, the radiation gain in Whole frequency band of two fluting Vivaldi antenna on average improves more than 3dB.Compared to the radiance adopting medium " director " and zero refractive index Meta Materials to improve Vivaldi antenna, adopt two notching construction design not only to have the ability that full frequency band promotes antenna performance, also have more simple structure.These superior performances make two fluting Vivaldi antenna have more wide application prospect.In addition, the reason that this design concept makes antenna obtain performance boost is the improvement of line of rabbet joint bore electric field, is thus also applicable to other gradual change slot antenna.
Above embodiment is only exemplary embodiment of the present invention, and be not used in restriction the present invention, protection scope of the present invention is defined by the claims.Those skilled in the art can in essence of the present invention and protection range, and make various amendment or equivalent replacement to the present invention, this amendment or equivalent replacement also should be considered as dropping in protection scope of the present invention.

Claims (3)

1. wide band high-gain two fluting Vivaldi antenna, it is characterized in that, comprising: dielectric-slab, one side has metal level as upper surface; Two fluting tapered slot, is arranged on the upper surface of dielectric-slab, the flare openings of exponentially shape gradual change; Edge waviness, is arranged on dielectric-slab upper surface; Feed element, is arranged on dielectric-slab lower surface, carries out feed to tapered slot; Wherein,
Described two fluting tapered slot comprises symmetrically arranged four radical exponent transition lines up and down, and the reference frame of exposure is as follows: x-axis is parallel with the long limit of dielectric-slab, and forward is tapered slot opening direction; Y-axis is parallel with the narrow limit of dielectric-slab, and y-axis forward can be any direction in straight line two direction, place, dielectric-slab narrow limit; Coordinate origin is positioned at the symmetrical centre on narrow limit and 5/24 place of long edge lengths, and the longer of long limit is tapered slot place, and the parametric equation of described four radical exponent transition lines is:
y = 1 2 * ( g * exp ( l n ( W s g ) * x L s ) - W ) , ( 0 ≤ x ≤ L s ) - - - ( 1 )
y = 1 2 * ( W - g * exp ( l n ( W s g ) * x L s ) ) , ( 0 ≤ x ≤ L s ) - - - ( 2 )
y = 1 2 * ( - W - g * exp ( l n ( W g ) * x L ) ) , ( 0 ≤ x ≤ L ) - - - ( 3 )
y = 1 2 * ( W + g * exp ( l n ( W g ) * x L ) ) , ( 0 ≤ x ≤ L ) - - - ( 4 )
Wherein, g is the start width of two fluting tapered slot, and W is the overall width of antenna, and L is the line of rabbet joint length of antenna, L sfor the length of radiation arm in the middle of antenna, W sfor the distance between two fluting tapered slot two starting points;
Describedly edges corrugatedly be respectively w by width and spacing ceand s cethe index shape line of rabbet joint form, the edge line of the index shape line of rabbet joint be utilize formula (3), (4) draw, wherein, the span of x is [L-t ce, L].
2. wide band high-gain as claimed in claim 1 two fluting Vivaldi antenna, it is characterized in that, described feed element comprises: microstrip transmission line, two metallization via hole, two circular recesss; Wherein, described microstrip transmission line comprises: a T-shaped power splitter and two sections of L shaped microstrip connecting lines, and microstrip transmission line is positioned at dielectric-slab lower surface, and for transmission current, microstrip transmission line is identical with the metal layer material of dielectric-slab upper surface; Metallization via hole runs through dielectric-slab, for connecting microstrip transmission line and metal level, conducts on metal level by the electric current on microstrip transmission line; Two circular recesss are connected with two fluting tapered slot, for the approximate open circuit line of rabbet joint.
3. wide band high-gain as claimed in claim 1 two fluting Vivaldi antenna, it is characterized in that, described dielectric-slab is thickness is 1mm, and dielectric constant is 2.65, and loss angle tangent is the polytetrafluoroethylglass glass cloth plate of 0.001; Metal level is the copper foil be pasted onto on dielectric-slab, and metal level length is 145mm, and width is 80mm, and thickness is 0.018mm.
CN201510979603.5A 2015-12-23 2015-12-23 Broadband, high-gain and double-slot Vivaldi antenna Pending CN105576380A (en)

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CN107623181A (en) * 2017-08-15 2018-01-23 中国人民解放军空军工程大学 A kind of broadband low-cross polarization Antipodal Vivaldi antennas
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CN108737016A (en) * 2017-04-17 2018-11-02 上海诺基亚贝尔股份有限公司 Activation and deactivated method, equipment and computer-readable medium for WCE patterns
CN109193144A (en) * 2018-09-10 2019-01-11 哈尔滨工业大学 Un-flexed wide band high-gain anti-pode Vivaldi antenna
CN109586018A (en) * 2018-11-05 2019-04-05 广东曼克维通信科技有限公司 A kind of vivaldi antenna and dual polarization probe
CN110429391A (en) * 2019-06-19 2019-11-08 朱永忠 A kind of snail orbital angular momentum Vivaldi array antenna and method
CN111129725A (en) * 2019-12-05 2020-05-08 中国联合网络通信集团有限公司 Index gradual change slotted antenna, electronic equipment and antenna array
CN111929646A (en) * 2020-08-14 2020-11-13 中国地质大学（北京） Beam scanning ground penetrating radar system and intelligent beam scanning detection method
CN114896769A (en) * 2022-04-21 2022-08-12 中国人民解放军63660部队 Ultra-wideband time domain pulse radiation Vivaldi antenna design method

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Cited By (12)

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Publication number Priority date Publication date Assignee Title
CN106450726A (en) * 2016-10-14 2017-02-22 广东顺德中山大学卡内基梅隆大学国际联合研究院 Broadband slotted end-fire microstrip antenna
CN108123217A (en) * 2016-11-29 2018-06-05 南京理工大学 A kind of broadband and wideangle double-circle polarization satellite antenna
CN108737016A (en) * 2017-04-17 2018-11-02 上海诺基亚贝尔股份有限公司 Activation and deactivated method, equipment and computer-readable medium for WCE patterns
CN107293853A (en) * 2017-06-19 2017-10-24 泰姆瑞技术（深圳）有限公司 A kind of dual polarized antenna
CN107623181A (en) * 2017-08-15 2018-01-23 中国人民解放军空军工程大学 A kind of broadband low-cross polarization Antipodal Vivaldi antennas
CN109193144A (en) * 2018-09-10 2019-01-11 哈尔滨工业大学 Un-flexed wide band high-gain anti-pode Vivaldi antenna
CN109586018A (en) * 2018-11-05 2019-04-05 广东曼克维通信科技有限公司 A kind of vivaldi antenna and dual polarization probe
CN110429391A (en) * 2019-06-19 2019-11-08 朱永忠 A kind of snail orbital angular momentum Vivaldi array antenna and method
CN111129725A (en) * 2019-12-05 2020-05-08 中国联合网络通信集团有限公司 Index gradual change slotted antenna, electronic equipment and antenna array
CN111929646A (en) * 2020-08-14 2020-11-13 中国地质大学（北京） Beam scanning ground penetrating radar system and intelligent beam scanning detection method
CN114896769A (en) * 2022-04-21 2022-08-12 中国人民解放军63660部队 Ultra-wideband time domain pulse radiation Vivaldi antenna design method
CN114896769B (en) * 2022-04-21 2024-04-19 中国人民解放军63660部队 Ultra-wideband time domain pulse radiation Vivaldi antenna design method

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